JP5936398B2 - Stabilization method of natural slope - Google Patents

Description

  The present invention relates to a method for forming a cut slope by cutting a natural slope and applying a stabilization treatment to the cut slope to stabilize the cut slope.

  For example, when excavating roads at the foot of a mountainous area or constructing residential land in a hilly area near a city, the slope of the target ground is cut to create a flat ground, and then the slope is cut. In order to prevent the collapse of the cut slope and the landslide formed along with the soil construction, it is necessary to implement a cut slope treatment for stabilizing the cut slope.

  Conventionally, a so-called reverse winding method is known as a method for that purpose (see Patent Documents 1 and 2). In this reverse winding method, first, as a construction design prior to construction, a plurality of construction areas are set by dividing the entire length of the slope from the top to the bottom of the slope to be cut into, for example, 5 to 10 m intervals in the vertical direction. . Each construction area is set so as to cross the entire width of the natural ground slope to be cut, and a plurality of such construction areas are set from the top to the bottom of the natural ground slope. At the time of construction, first cut the top construction area and cut the natural slope, and at the same time, create a flat step or embankment at the bottom of the construction area, and then the step or embankment A work scaffold is assembled on the cut slope, and a cut slope treatment is performed on the cut slope formed by the cut construction using the work scaffold as a base to stabilize the slope. Only after the cut construction and slope treatment in the uppermost construction area is completed, the next construction area located below the uppermost construction area and the subsequent cut slope treatment Move on. As described above, in the conventional reverse winding method, the cut construction and the cut slope treatment in the upper construction area are completed, and then the lower construction area is sequentially moved to the lower construction area. Construction is going on.

Japanese Patent Laid-Open No. 11-61840 JP 2001-11863 A

However, the conventional reverse winding method described above has the following problems.
First, there is a problem that it is not possible to proceed to the construction in the lower construction area until the cut construction in the upper construction area and the stabilization treatment of the cut slope are completed. This is because if the construction of the lower construction area is started before the construction of the upper construction area is completed, the upper construction area may collapse or the work scaffold may be damaged.

  For this reason, even if it is a processing machine that is used for cutting in a certain construction area and is already unnecessary for the subsequent cutting slope treatment, the construction will be completed until the cutting slope treatment is completed. There is also the problem that it must be left in the area. Therefore, an expensive processing machine is idled, and its use efficiency is remarkably lowered, prolonging the construction period and increasing the construction cost. In addition, when a construction is to be carried out in the lower construction area, these processing machines and dismantled work scaffolds must be moved to the lower construction area, which requires a great deal of time and labor.

  In addition, the height of the cut slope formed in a certain construction area is relatively high and the slope is relatively gentle. Although it is necessary to assemble the cut slope itself instead of the bottom of the surface, it also has the problem of making the work scaffold extremely unstable.

  The present invention has been made in view of the above-described problems, and enables the construction of the next construction area without waiting for the completion of the stabilization treatment of the cut slope, thereby reducing the idle period of the processing machine, The objective is to provide a method for stabilizing ground slopes that can shorten the construction period and reduce construction costs.

  In order to solve the above-mentioned problems, the present inventor is due to the fact that the above-described problems of the conventional reverse winding method set a construction area that crosses the entire width of the natural slope to be cut. Attention was paid to the completion of the present invention.

  That is, the ground slope stabilization method of the present invention includes a cutting process for cutting a natural slope to form a cutting slope, and a cutting slope processing process for processing the formed cutting slope. This is a method for stabilizing natural ground slopes, and the natural ground slopes to be cut are divided into multiple sections along the width direction, and a plurality of longitudinally divided construction zones are set along the vertical direction of the natural ground slopes. Then, after carrying out the cutting process in one vertical division processing area among the plurality of vertical division work areas, the cut slope treatment process in the vertical division work area and the next vertical division work It is characterized by carrying out the cutting process in the area together.

  In addition, the ground slope stabilization method of the present invention includes a cutting process for cutting a natural slope to form a cutting slope, and a cutting slope processing process for processing the formed cutting slope. A method for stabilizing a natural ground slope having a section of a natural ground slope to be cut into a plurality of sections along the vertical direction, and setting a laterally divided construction area, and for each of the laterally divided construction areas Dividing into a plurality along the width direction, setting a plurality of vertical division construction areas along the vertical direction of the natural mountain slope, in the horizontal division construction area located in the upper stage among the horizontal division construction areas After performing the cutting process in one vertical division construction area among the plurality of vertical division construction areas located in the horizontal division construction area, the cut slope treatment in the vertical division construction area Process and lateral direction in the horizontal division construction area or the lower stage The cutting process is carried out together with the next longitudinally divided construction area located in the split construction area, and then the cut treatment and the cut slope treatment are sequentially performed in the laterally divided construction area located at the lower stage. It is characterized by implementing.

  At least one of the cut process and the cut slope treatment process is performed using a processing machine supported by a wire, and the processing machine is divided into the longitudinally divided construction area by using the pulling force of the wire. It is preferable to carry it out by moving.

  The cutting machine or the cutting slope processing step, the processing machine is provided with a pair of wires spaced in the width direction, and the upper ends of the wires above the longitudinally divided area Supporting, using the traction force of each wire to move the processing machine in the vertical division construction area, after performing the cutting process or the cutting slope treatment process in one vertical division construction area, The processing machine is moved to the upper part of the longitudinally divided construction area with each wire, and then the cutting machine in the other longitudinally divided construction area is moved to the other longitudinally divided construction area. It is preferable to implement a process or a cut slope treatment process.

  In the pair of wires, the interval between the pair of wires in the portion supported above the longitudinally divided construction area is wider than the interval between the pair of wires in the portion supported by the processing machine. It is preferable to be stretched.

  As the processing machine, it is preferable to use a machine that is provided with a winch that winds or rewinds the wire and that is provided with a guide member around which the wire is wound at a certain interval in front of the winch. .

  The cut slope treatment process includes an anchoring process. When the anchoring process is performed, a double-pipe type drilling member with an outer casing and an inner rod and the drilling member can be moved. The outer casing and the inner rod are moved forward along the guide shell toward the predetermined position of the cut slope when drilling, and a drilling hole is provided. Thereafter, the inner rod is moved backward along the guide shell while the outer casing is positioned in the drilling hole, and then the outer casing is moved back onto the guide shell without removing the inner rod. It is preferable to use a processing machine capable of

  A drifter that is movable along the guide shell as the processing machine, is connected to the outer casing and the inner rod, and applies a driving force when performing drilling with the outer casing and the inner rod; and A rotary pulling device that is movable along the guide shell independently of the drifter and that can hold the outer casing; and after the outer casing and the inner rod are drilled, the outer casing is rotated. Holding the pulling device and releasing the connection with the drifter, with the outer casing positioned in the hole, retract the drifter to return the inner rod to the standby position of the guide shell, Filler into the outer casing located in the drilling hole It is preferable that after the filling operation, the rotary pulling device holding the outer casing is retracted, and the outer casing is extrapolated around the inner rod in a standby state and can be reconnected to the drifter. .

  In the present invention, a plurality of longitudinal cutting construction areas are set in the width direction of the ground slope to be cut, and a cutting process and a cutting slope treatment process are performed on the vertical cutting construction areas. Can do. For this reason, for example, a cutting process and a subsequent cut slope treatment process can be sequentially performed on a vertically divided construction area set adjacent to the width direction of the natural slope. That is, without waiting for the completion of the cut slope treatment process in the vertical division construction area where the cut process was performed first, the cut slope treatment process in the vertical division construction area and the next vertical division construction The cutting process of the area can be performed together, that is, in parallel, and work efficiency can be improved. In particular, when a cutting machine for cutting slopes or a cutting machine for forming cut slopes is used, the construction period can be shortened and construction costs can be reduced without leaving each processing machine idle. can do.

It is a figure for demonstrating the 1st cut construction method implemented by the 1st stabilization construction method which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the 2nd cutting method implemented by the 2nd stabilization construction method which concerns on the 2nd Embodiment of this invention. It is a figure for demonstrating the one aspect | mode of the 1st stabilization construction method which concerns on the 1st Embodiment of this invention. It is a figure for demonstrating the one aspect | mode of the 2nd stabilization construction method which concerns on the 2nd Embodiment of this invention. It is the side view which showed the processing machine which can be utilized suitably for the cut slope processing in the 1st and 2nd stabilization method of this invention. It is a top view of the processing machine of FIG. It is a figure for demonstrating the structure of the rotation drawing apparatus in the processing machine of FIG. 5, (a) is an exploded view which showed the relationship between an outer casing and a rotation drawing apparatus, (b) is a B arrow view of (a). (C) is a CC line arrow directional view of (a), (d) is a DD line arrow directional view of (a). It is the figure which showed the time of the slope movement of the processing machine of FIG. It is the figure which showed the state before the drilling operation | work of the processing machine of FIG. It is a figure for demonstrating the drilling process by the processing machine of FIG. It is a figure for demonstrating the process of extracting an inner rod after drilling with the processing machine of FIG. It is a figure for demonstrating the process after extracting the inner rod in the processing machine of FIG.

  The stabilization method of the present invention includes a step of forming a cut slope by performing cut construction (cut step), and applying a cut slope treatment to the cut slope formed by the cut step. Although there is a step of stabilizing the cut slope (cut slope processing step), for the convenience of explanation, first, the cut method implemented in the cut step will be described. The cut method includes the first cut method applied in the stabilization method according to the first embodiment of the present invention and the second cut method applied in the stabilization method according to the second embodiment. There are two aspects. First, the first cutting method applied in the stabilization method according to the first embodiment will be described with reference to FIG.

  This method can be used when the area of the natural slope to be cut is relatively small, or the natural slope where the area of the natural slope is not small but the soil quality is strong and no collapse or landslide occurs even if the ground is cut. Applies to

  In this construction method, first, prior to construction, a plurality of longitudinally divided construction areas extending in the vertical direction of the natural slope are set on the natural slope of the cut object. If the entire surface of the natural slope is cut at once, there is a risk of the collapse of the natural slope or landslide. In order to avoid this, in the first cutting method of the present invention, the location of the cutting work is set in advance. Divide it into multiple pieces. That is, the set number of longitudinally divided construction areas is set to a plurality. The width of each longitudinally divided construction area is not limited, and is set to an appropriate width for each site in consideration of soil quality and the like. Moreover, the width | variety of each vertical direction division | segmentation construction area may be equal width, and may differ.

  For example, as shown in FIG. 1, by dividing and dividing a natural mountain slope whose overall width is W into three parts, it extends in the vertical direction from the top to the bottom of the natural mountain slope, and the width is W1, Three vertical direction division construction areas A1, A2, and A2, which are W2 and W3, are set. For each of the vertically divided construction areas A1, A2, and A3, cut construction is performed from the upper side of the natural slope to the lower side. Specifically, for example, a cut construction from the top to the bottom is performed on the vertical division construction area A1, and the vertical division construction area A1 is shaped into a cut slope A. The cut construction is proceeded in a manner of shifting to the cut construction in the vertical division construction area A2.

  The cut construction at this time is carried out by various conventional construction methods. There are cases where it is carried out by a self-propelled processing machine, and sometimes it is carried out by human power. This is a work performed using In addition, this point is the same also in the below-mentioned 2nd cutting construction method, and is the same also in the operation | work of the cutting slope treatment process in a 1st stabilization construction method and a 2nd stabilization construction method. When using a self-propelled processing machine, if the slope of the construction target is below the climbing ability (usually 30 to 35 degrees) of the processing machine, the work can be performed while self-propelled. Of course, if the slope of the construction target is a slope that exceeds the climbing ability (usually 30 to 35 degrees) of the processing machine's self-propelled, it is above the processing machine side and the longitudinally divided construction area. It is preferable that at least one wire is passed between the two and the wire is wound up and rewound so that the traction force by the wire can be added to the climbing ability of the processing machine by self-propelling. As a result, stable construction is possible even on steep slopes that exceed the climbing ability of the processing machine by itself.

  However, in order to enable more stable work on steep slopes exceeding the climbing ability, for example, a cutting machine such as disclosed in Japanese Patent Publication No. 7-100944 is driven in the following manner to perform cutting work. It is preferable. That is, as shown in FIG. 1, the processing machine 1 is provided with traveling portions 1a and 1b made of, for example, endless tracks and wheels on both sides of the gantry, and can be self-propelled, and can turn freely and maintain a horizontal posture. It is composed of a work table that can be cut and a backhoe equipped with excavation means (shovel) for cutting. The processing machine 1 is provided with a pair of wires 2a and 2b at regular intervals in the width direction. Specifically, for example, a pair of winches 3a and 3b are mounted at a predetermined interval in the width direction at an arbitrary position between the vicinity of the center in the front-rear direction of the gantry of the processing machine 1 and the rear end, and the winch 3a has a wire. 2a is wound, and the wire 2b is wound around the winch 3b. The wires 2a and 2b wound around the winches 3a and 3b are drawn forward and are further wound around guide members 31a and 31b provided near the front end of the gantry. On the other hand, a pair of supporters 4a and 4b are fixedly arranged above the longitudinally divided construction area A1, and the upper ends of the wires 2a and 2b described above are joined thereto. Wires 2a and 2b are stretched between the support tools 4a and 4b and the winches 3a and 3b by the weight of the processing machine 1, and the processing machine 1 is arranged and supported on the upper part of the vertical division work area A1.

  At this time, the distance between the pair of support tools 4a and 4b is made wider than the distance between the pair of wires 2a and 2b in the processing machine 1 (interval between the winches 3a and 3b). It is preferable that the planar view shape of the wires 2a and 2b stretched between the machine 1 is a reverse C shape as shown in FIG. This is because the degree of freedom of the driving operation in the longitudinally divided construction area A1 of the processing machine 1 is increased, and at the same time, the stability during the driving operation of the processing machine 1 is increased. In addition, as the processing machine 1, the traveling units 1a, 1b and the gantry are inclined at the same angle as the slope, but can be controlled so that the work table always maintains a horizontal posture in consideration of workability and the posture of the engine. In other words, depending on the slope of the slope, when using the traveling parts 1a, 1b and the gantry that can be controlled so that the rear end side pivots upward about the front end side of the work table, As the slope of the slope becomes steeper, the work table is separated from the gantry, so that the stability of the processing machine 1 is lowered, and it is easy to tilt left and right, and also to fall backward. However, the stability of the processing machine 1 in such a posture is ensured by supporting the pair of wires 2a and 2b stretched in an inverted C shape as in this embodiment.

  Here, the winches 3a and 3b can be provided in the vicinity of the front end portion of the gantry that supports the traveling portions 1a and 1b. The guide members 31a and 31b are preferably provided near the front end. Since the wires 2a and 2b are stretched in an inverted C shape as described above, if the wires 2a and 2b are directly wound around the winches 3a and 3b, there is a problem that the wires 2a and 2b are wound unevenly. May occur. Therefore, the direction is controlled by receiving the wires 2a and 2b, which are stretched in an inverted C shape, by the guide members 31a and 31b arranged near the front end of the gantry, and the direction substantially orthogonal to the axial direction of the winches 3a and 3b. It is preferable that the wires 2a and 2b are taken in and out along the line. As such guide members 31a and 31b, rollers, pulleys, fair leaders, universal fair leaders, and the like can be used. Moreover, although the upper end of each wire 2a, 2b is couple | bonded with a pair of support tool 4a, 4b arrange | positioned above the vertical direction division construction area A1, as a pair of support tool 4a, 4b, it is like an anchor bolt. It may be a thing, and standing trees etc. can also be used.

  Cut construction is carried out as follows. First, the processing machine 1 supported by the wires 2a and 2b as described above is arranged at the uppermost part of the longitudinally divided construction area A1. Next, the processing machine 1 is operated and cut while moving downward while feeding the wires 2a and 2b. When cutting in order from the top to the bottom, the processing machine 1 will eventually reach the bottom of the longitudinally divided construction area A1. In the middle of the process, the winches 3a and 3b are independently wound around the wires 2a and 2b, and the processing machine 1 is moved in the vertical and horizontal directions as far as possible within the longitudinally divided construction area A1. Although it can be moved, the work is basically performed from the top to the bottom.

  When the cut construction in the longitudinal division construction area A1 is completed, the wires 2a and 2b are wound up by the winches 3a and 3b, and are located at the bottom of the vertical division construction area A1 (the formed flat small step). The processing machine 1 is moved to the top of the cut slope A formed using the traction force of the wires 2a and 2b in combination with the self-propelled force. Next, the processing machine 1 is moved to the top of the adjacent longitudinally divided construction area A2. A pair of wires-2a and 2b are coupled to a pair of support tools (such as standing trees) fixedly arranged at the top of the vertical division work area A2, and the processing machine 1 is moved downward from above the vertical division work area A2. The cut construction is again performed in the above-described manner. By sequentially performing this operation, all of the natural slopes to be cut are shaped into the cut slope A.

Next, based on FIG. 2, the 2nd cutting method applied with the stabilization method which concerns on the 2nd Embodiment of this invention is demonstrated.
This method can be used for natural ground slopes that are subject to cutting, or for ground slopes that are not very large but have a soft soil quality and are likely to collapse or landslide during cutting. Applied.

  In this construction method, first, a plurality of laterally divided construction areas extending in the width direction of the natural slope are set on the natural slope of the cut object, and further in the vertical direction of the natural slope for each laterally divided construction area. A plurality of longitudinally divided construction areas are set. In that case, the setting of the horizontal division construction area may be performed according to the conventional reverse winding method, and the setting of the vertical division construction area may be performed by applying the first cutting method of the present invention described above. The width of each longitudinally divided construction area is not limited, and is set to an appropriate width for each site in consideration of soil quality and the like, and the width of each longitudinally divided construction area may be equal. And it is the same as that of the said 1st cutting method that a different width | variety may be sufficient.

  In addition, the set number of vertical division construction areas in each of the horizontal division construction areas of each step may be the same or different, and the number is determined in consideration of the soil condition of the natural slope and the size of the area. May be selected as appropriate.

  For example, as shown in FIG. 2, a natural mountain slope whose vertical length in the vertical direction is L is divided into three so as to extend in the width direction of the natural mountain slope, and the vertical lengths are L1 and L2 respectively. , L3, which are three laterally divided construction areas B1, B2, B3. Next, a plurality of longitudinally divided construction areas are set for each laterally divided construction area in the same manner as in the case of the first cut method described above. In the case of FIG. 2, four vertical division construction areas A1 to A4 are arranged in the top horizontal division construction area B1, five vertical division construction areas A5 to A9 are arranged in the middle horizontal division construction area B2, and Six vertical direction division construction areas A10 to A15 are set in the lowermost horizontal division construction area B3.

  In the second cut construction method, first, in the uppermost horizontal division construction area B1, the cut construction is performed in the same manner as the first cut construction method described above for the vertical division construction area A1, that is, from above to below. Do. Next, the cut construction is performed in the same manner for the adjacent vertical direction division construction area A2, and the cut construction is sequentially performed for the vertical direction division construction areas A3 and A4. Thereby, the whole horizontal direction division construction area B1 is shaped by the cut slope A.

  At this time, when shifting to a cut construction in an adjacent vertical division construction area from a certain vertical division construction area in the same horizontal division construction area, the same work as the first cut construction method described above may be performed. That is, for example, the cutting machine 1 located in the bottom of the construction area after completion of the cut construction in the vertical division construction area A1 (the small step formed in the horizontal division construction area B1) is pulled by the wires 2a and 2b. Then, it is moved to the upper part of the vertical direction division construction area A1, and on the other hand, a pair of support tools is newly fixed and arranged on the top of the vertical direction division construction area A2 (the point that a tree can be used as a pair of support tools is the above And the pair of wires of the processing machine 1 is coupled there, and the processing machine 1 is moved and arranged on the upper part of the longitudinally divided construction area A2 and then driven to drive the longitudinally divided construction area A2. Implement cut construction.

  Moreover, when a certain horizontal direction division construction area is completed and it moves to the cut construction of the lower horizontal division construction area, for example, when the cut construction of the whole horizontal direction division construction area B1 is completed, a pair of support tools are used. Fixed to the top of the natural slope located above the vertically divided work area A5 set in the transversely divided work area B2, and the wires 2a and 2b are connected to it to connect the processing machine 1 to the vertically divided work area. After moving and arranged on the upper part of A5, cut construction is sequentially performed from the vertical division construction area A5 to the vertical division construction area A9, and the entire horizontal division construction area B2 is shaped into a cut slope. Thereafter, similarly, the processing machine 1 is moved and arranged in the vertical direction division construction area A10 set in the horizontal direction division construction area B3, and the cut construction is sequentially performed from the vertical direction division construction area A10 to the vertical direction division construction area A15. To complete the cutting work on the entire natural slope.

  In addition, although the support tools 4a and 4b which support the processing machine 1 were fixed to the top part of a natural mountain slope in FIG. 2, the example which cuts in the horizontal division | segmentation construction area of each step was shown, The upper cut When the construction is complete, the support is fixedly placed at the bottom of the upper horizontal division construction area (created small stage) or the upper part of the lower horizontal division construction area, and the processing machine is divided into the lower horizontal division construction. It is also possible to move to the area and perform cutting work there.

  In the 2nd cutting method, you can work by manpower or work using a self-propelled processing machine. When the construction area (longitudinal division construction area) is set to be long in the height direction along the slope of the natural mountain, it is easy for the processing machine to move from the bottom to the top. Yes, it can be carried out without building an unstable work platform, improving the work speed and contributing to the reduction of construction costs.

Next, a stabilization method (first stabilization method) according to the first embodiment of the present invention will be described with reference to FIG.
In this method, the cut slope formed by the first cut construction method described above is subjected to a cut slope treatment to stabilize the cut slope (cut slope treatment step), In the aspect of performing the cutting process in the next vertical division construction area and forming the cut slope (cut process), one vertical division construction area and the other vertical division construction area In this method, the cutting process and the cutting slope processing process are performed in parallel.

  In this construction method, as shown in FIG. 3, first, a plurality of longitudinally divided construction areas are set on a natural slope of a cut object by the first cutting method, and the first cutting method is applied to one of them. Apply it and shape it into cut slope A. Therefore, at that time, the remaining longitudinally divided construction areas A2 and A3 remain untreated ground slopes.

  Next, a cut slope processing step is performed on the shaped cut slope A, and in parallel with this, a cut step is performed on the adjacent longitudinally divided construction area A2. Specifically, for example, a pair of support tools 4a and 4b are fixedly arranged at the top of the longitudinally divided construction area A2, and the upper ends of the pair of wires 2a and 2b provided in the processing machine 1 are coupled thereto. Then, the processing machine 1 is moved and arranged in the upper part of the vertical direction division construction area A2, and the cutting machine 1 is driven to perform a cutting process from the upper side to the lower side of the vertical direction division construction area A2.

  On the other hand, for example, a pair of support tools 4A and 4B are newly fixed and arranged on the top of the already-shaped cut slope A belonging to the vertical division construction area A1, and for the cut slope treatment, for example. The processing machine 1 ′ is newly connected. That is, each of the wires 2A, 2B of the processing machine 1 ′ provided with a pair of wires 2A, 2B, and a pair of winches 3A, 3B wound up or rewinded at intervals in the width direction. The upper end is coupled to the support tools 4A and 4B, respectively, so that the processing machine 1 'is disposed and supported on the upper part of the cut slope A. Then, the processing machine 1 ′ is driven to perform a predetermined cut slope processing step from above the cut slope A toward the bottom. Also in this case, as in the case of the first cutting method, the distance between the pair of supports 4A and 4B is set to the distance between the pair of wires 2A and 2B in the processing machine 1 ′ (the distance between the winches 3A and 3B). It is preferable that the shape of the wires 2A and 2B, which are stretched between the support tools 4A and 4B and the processing machine 1 ′, is a reverse C shape. In addition, it is preferable that guide members 31A and 31B such as a pair of fair leaders are disposed in front of the pair of winches 3A and 3B at a predetermined interval.

  If the cutting process in the vertical direction division construction area A2 is completed and the cut process is shaped into a cut slope, the vertical direction adjacent to the cut slope processing process for the cut slope is performed in the same manner as in the above embodiment. The cut process for the divided construction area A3 is performed in parallel.

Next, based on FIG. 4, the stabilization method (2nd stabilization method) which concerns on the 2nd Embodiment of this invention is demonstrated.
In this method, the cutting slope treatment process is performed on the cutting slope formed by the above-mentioned second cutting construction method to stabilize the cutting slope, and in parallel with this, This is a construction method in which a cutting process is carried out on an unconstructed longitudinally divided construction area to be constructed.

  This construction method will be described below with reference to the example shown in FIG. In the example of FIG. 4, three laterally divided construction areas B1, B2, and B3 are set on a natural ground slope to be cut, and four longitudinally divided construction areas A1 to A4 are set in the laterally divided construction area B1. Similarly, four vertical direction division construction areas A5 to A8 are set in the horizontal direction division construction area B2, and four vertical direction division construction areas A9 to A12 are also set in the horizontal direction division construction area B3.

  Moreover, in FIG. 4, the cutting process and the subsequent cut slope treatment process have already been completed up to the vertical division construction areas A1, A2, and A3 in the horizontal division construction area B1, and the processing surface is Although it is the stabilization processing slope A0, in the case of the longitudinally divided construction area A4, only the cutting process is finished, and the slope indicates the state of the untreated cutting slope A. And the cutting machine 1 which has already carried out the cutting process in the vertical division construction area A4 and shaped it into the cut slope A is the horizontal division construction as in the case of the first stabilization method described above. The cut slope in the vertical division construction area A4 which is moved and arranged in the vertical division construction area A5 located in the lower horizontal division construction area B2 of the area B1 and the cut slope treatment process has not yet been performed. The processing machine 1 ′ for processing is newly arranged.

  Accordingly, the processing machine 1 for cutting work includes a pair of wires 2a and 2b in which the shape in plan view is stretched between the pair of supports 4a and 4b and the pair of winches 3a and 3b in a reverse C shape. The processing machine 1 ′ for processing the cut slope is arranged and supported on the longitudinally divided construction area A5, and a pair of support tools 4A newly fixed and disposed on the top of the longitudinally divided construction area A4. 4B and a pair of winches 3A, 3B are also arranged and supported on the cut slope A via a pair of wires 2A, 2B in which the shape in plan view is stretched in an inverted C shape. .

  In this state, the cutting machine 1 'is driven from the upper side to the lower side of the cut slope A, and the cut slope processing step is performed on the cut slope A to stabilize the cut slope A. Work to make the slope A0 is underway. In parallel with this, the cutting machine 1 is driven from the upper side to the lower side of the vertical direction division construction area A5 to perform the cutting process for the vertical direction division construction area A5, and the vertical direction division construction area A5 is cut. Work to make soil slope A is carried out independently.

  When the construction of each of these areas is completed, the processing machine 1 is moved to the next vertical division construction area A6 by performing the same work as the first stabilization method described above, and the cutting process is carried out there, In addition, the processing machine 1 'is moved and arranged on the cutting slope A in the longitudinally divided construction area A5 where the cutting process has already been completed in the same manner as the first stabilization method, and the cutting slope processing process there is performed. The cutting process and the cutting slope processing process are carried out simultaneously in the manner of carrying out. Then, following each of the vertical division construction areas A5 to A8 of the horizontal division construction area B2, the same work is performed in each of the vertical division construction areas A9 to A12 of the bottom horizontal division construction area B3. In addition, all surfaces are applied to the stabilization surface.

  According to the first and second stabilization methods according to the first and second embodiments described above, it is possible to work by setting the longitudinally divided construction area, and it becomes unnecessary to assemble an unstable work scaffold. The cutting process and the subsequent cutting slope treatment process can be carried out successively in succession. Therefore, when the cut slope treatment process is performed in the longitudinal division construction area where the cut process has been performed first, different work is performed such as performing the cut process in other vertical division construction areas. Processes can be performed in parallel, increasing work efficiency. In addition, the construction period can be further shortened and the construction cost can be reduced without leaving each processing machine idle. In addition, the cutting slope treatment process is not limited to the processing machine towed by two wires as described above, but is manually operated, not supported by a wire, or supported by a single wire. As described above, it is possible to work using various processing machines.

  In addition, as the cutting slope treatment in the first and second stabilization methods, for example, various stabilization methods such as mortar / concrete spraying, masonry, on-site concrete frame work, rock bolt work, ground anchor work, etc. There is no limitation.

  Among these, when anchoring such as rock bolting and ground anchoring is performed using a processing machine, a double-pipe type drilling member of an outer casing and an inner rod and the said drilling member are supported movably. The outer casing and the inner rod are moved forward along the guide shell toward the predetermined position of the cutting slope when drilling, and after drilling, the outer casing is moved into the drilling hole. 5-12, the inner rod can be moved back along the guide shell while being positioned at the same position, and then the outer casing can be moved back over the guide shell without removing the inner rod. It is preferable to use a processing machine 100 as described above.

  The processing machine 100 is self-propelled with traveling units 102, 102 such as endless tracks attached to a base 101, and the base 101 is provided with a pair of winches 103, 103 at predetermined intervals on the left and right. The wires 104 and 104 wound around the winches 103 and 103 are connected to support members 200 and 200 installed above the construction area. In addition, guide members 105 and 105 such as a fair leader are provided in front of the winches 103 and 103, and the wires 104 and 104 are wound around the guide members 105 and 105 so that the extending direction is stabilized. ing. That is, between the winches 103, 103 and the guide members 105, 105, the two wires 104, 104 are stretched so as to be substantially parallel to each other, but the separation distance between the pair of supports 200, 200 is increased. When the distance is wider than the width of the gantry 101, the pair of wires 104, 104 are spread out from the guide members 105, 105 to the support tools 200, 200, that is, are stretched in an inverted C shape. It will be. By stretching in this way, the degree of freedom in the operation direction of the processing machine 100 is increased as described above, and the stability during operation is increased.

  A drilling mechanism support base 106 is provided near the front end of the gantry 101. The drilling mechanism has a guide shell 107, an outer casing 108 that is a double-pipe drilling member supported by the guide shell 107, and an inner rod 109. The guide shell 107 is provided with a first bracket 107a on the front side of the lower surface thereof, and the first bracket 107a is connected to the upper portion of the hole drilling mechanism support base 106 via a support shaft 106a. The rear end side 107 is provided so that it can be rotated up and down. In the guide shell 107, a second bracket 107b is provided at a position spaced apart from the first bracket 107a by an appropriate distance so as to protrude downward. The second bracket 107b and the drilling mechanism support base 106 are provided. A cylinder 120 is connected to the lower part of the cylinder. That is, the bottom side of the cylinder body 121 is rotatably connected to the lower portion of the hole drilling mechanism support base 106, and the tip end side of the piston 122 is rotatably connected to the second bracket 107b. Accordingly, when the piston 122 of the cylinder 120 is displaced in the extending direction with respect to the cylinder body 121, the guide shell 107 is rotated upward about the support shaft 106a, and the piston 122 is displaced in a direction in which the piston 122 is accommodated in the cylinder body 121. Then, the guide shell 107 rotates downward about the support shaft 106a. The piston 122 is held in the cylinder body 121 until the piston 122 is accommodated in the cylinder body 121 until the guide hole 107 is moved to the target drilling position. The guide shell 107 is extended to raise the rear end side of the guide shell 107 so that the guide shell 107 is in a substantially vertical posture with respect to the drilling position (see FIGS. 8 and 9).

  The guide shell 107 has a length capable of supporting the double-tube outer casing 108 and the inner rod 109. For example, in the case of rock bolt construction, the outer casing 108 and the inner rod 109 are formed with a length of, for example, 5 to 10 m, and the guide shell 107 has substantially the same length but a longer length.

  The guide shell 107 is provided with a traveling body 110 that can travel along the guide shell 107. The traveling body 110 is connected to a transmission device 111 disposed on the lower surface side of the guide shell 107 and moves along the guide shell 107. The transmission device 111 includes a driving-side rotating member 111a including a gear and a pulley that is rotated by a drive motor 111d disposed on the rear end side of the guide shell 107, and a gear and a pulley that are disposed on the front end side of the guide shell 107. A driven-side rotating member 111b, a driving-side rotating member 111a, and a belt-like member 111c made of a chain, a belt, or the like wound around the driven-side rotating member 111b. The traveling body 110 is connected to the belt-like member 111c. Yes. Therefore, when the driving side rotating member 111a rotates by driving the drive motor 111d, the belt-like member 111c rotates between the driving side rotating member 111a and the driven side rotating member 111b. Thereby, the traveling body 110 connected to the belt-like member 111c slides along the guide shell 107 from the rear end side to the front end side or from the front end side to the rear end side.

  In the guide shell 107, a drifter 112 is disposed on the rear end side with the traveling body 110 interposed therebetween, and a rotary pulling device 114 is disposed on the front end side. The drifter 112 and the rotary pulling device 114 are both provided to be movable along the guide shell 107. The drifter 112 is provided with a connecting bar 112 a that protrudes toward the front end side of the guide shell 107, and the rotary pulling device 114 is provided with a connecting bar 114 a that protrudes toward the rear end side of the guide shell 107. . On the other hand, connecting holes 110a and 110a are provided in front and rear of the traveling body 110 (see FIG. 7A), and the connecting bar 112a of the drifter 112 is connected to the connecting hole 110a on the rear end side. The drifter 112 is pulled by the traveling body 110 and slides on the guide shell 107. By connecting the connecting bar 114a of the rotary pulling device 114 to the connecting hole 110a on the distal end side of the traveling body 110, the rotating pulling device 114 is pulled by the traveling body 110 and slides on the guide shell 117.

  Here, the rear end side of the inner rod 109 and the outer casing 108 is connected to the drifter 112 via a swivel 112b. Further, the distal ends of the inner rod 109 and the outer casing 108 pass through the rotary pulling device 114 and are supported through a support plate 115 provided at the most distal end portion of the guide shell 107. As shown in FIG. 7, the rotary pulling device 114 is provided with a cylindrical member 114b that is rotatably arranged at the center, and the outer casing 108 passes through the cylindrical member 114b. A gear member 114c is provided around the cylindrical member 114b. The gear member 114c meshes with an output gear 114e connected to an output shaft of a rotary motor 114d attached to the rotary pulling device 114, and the rotary motor 114d. Is driven, the cylindrical member 114b rotates through the output gear 114e and the gear member 114c. On the other hand, in the vicinity of the rear end of the outer casing 108, a square rotation pulling block 108a for preventing rotation is fixed by welding or the like. Further, a concave chuck portion 114f formed in the same shape into which the rotary drawing block 108a can be fitted is formed on the rear end side of the cylindrical member 114b. Accordingly, when the outer casing 108 is moved forward, the rotary extraction block 108a is fitted to the chuck portion 114f, and the connection with the drifter 112 is released, the outer casing together with the tubular member 114b is driven by the rotation motor 114d of the rotary extraction device 114. 108 will rotate.

  According to this processing machine 100, the drilling mechanism is moved in a substantially parallel posture with respect to the gantry 101 as shown in FIG. In this initial state, the drifter 112 is positioned on the rear end side of the guide shell 107, the rotary pulling device 114 is positioned on the front end side of the guide shell 107, and the traveling body 110 is connected to the connecting bar 112a of the drifter 112. Keep it as When the drilling position is reached, the piston 122 of the cylinder 120 is extended and rotated so that the rear of the guide shell 107 rises, and as shown in FIG. The rod 109 is set and positioned so as to be substantially perpendicular to the drilling position.

  Once positioned, the transmission device 111 is driven, and the belt-like member 111c is rotated to move the traveling body 110 toward the distal end side of the guide shell 107. Further, the drifter 112 is driven, and the outer casing 108 and the inner rod 109 are both pressed against the ground (slope) and rotated. As a result, a hole is drilled by the outer bit 108b at the tip of the outer casing 108, and the outer casing 108 and the inner rod 109 both enter the ground to form a hole 300 (see FIG. 12). At this time, the rotation drawing block 108a of the outer casing 108 is not fitted into the chuck portion 114f of the rotation drawing device 114.

  When the outer casing 108 and the inner rod 109 enter the ground for a predetermined length and the drilling process is completed, the rotary extraction block 108a is fitted into the chuck portion 114f of the rotary extraction device 114. Further, the rear end portion of the outer casing 108 is removed from the drifter 112. In this state, the transmission device 111 is operated to move the traveling body 110 backward along the guide shell 107. As a result, as shown in FIG. 11, only the inner rod 109 is pulled out with the outer casing 108 left in the drilling hole 300, and returns to the guide shell 107.

  When the inner rod 109 is pulled out, as shown in FIG. 12, a stress material 301 such as a reinforcing bar is inserted into the outer casing 108 existing in the drilling hole 300, and a filler 302 such as cement is further inserted. Fill.

  Next, the connection between the connection bar 112 a of the drifter 112 and the connection hole 110 a of the traveling body 110 is released, the traveling body 110 is advanced, and the connection bar 114 a of the rotary pulling device 114 is moved to the connection hole of the traveling body 110. Connect to 110a. In this state, as shown in FIG. 12, the rotation motor 114d of the rotary pulling device 114 is driven to rotate the cylindrical member 114b. The outer casing 108 is rotated by the rotation of the cylindrical member 114b because the rotation extraction block 108a is fitted to the chuck portion 114f of the rotation extraction device 114. When the traveling body 110 is moved backward while rotating the outer casing 108 in this way, the rotary pulling device 114 is moved backward, and the outer casing 108 is pulled out from the drilling hole 300. In the state before drilling, the outer casing 108 is set on the guide shell 107 so as to surround the outer periphery of the inner rod 109. Therefore, when the outer casing 108 is pulled out, the outer casing 108 has already returned to the guide shell 107. The outer casing 108 is extrapolated around the inner rod 109. Then, the rear end portion of the outer casing 108 is reconnected to the drifter 112 via the swivel 112b. The rotary pulling device 114 operates the traveling body 110 to return to the initial position on the distal end side of the guide shell 107, and then retracts the traveling body 110 to place the traveling body 110 on the connecting bar 112 a of the drifter 112. Connected to the state shown in FIG. Thereby, it will be in the state which can perform the next drilling operation | work.

  If one anchor such as a lock bolt is installed, the length of the pair of wires 104, 104 connected to the pair of winches 103, 103 is adjusted, and the processing machine 100 is moved up, down, left, and right, and the next The above operations are sequentially performed at the drilling position.

  Conventionally, in a double-pipe type drilling device, when pulling out, first, with the outer casing left in the drilling hole, retract the drifter, pull out only the inner rod, remove the inner rod, It is performed through a process of moving forward again, connecting to the outer casing, and pulling out the outer casing. For this reason, there was a problem in securing a temporary storage place when the inner rod was removed, and it took time and effort to remove the inner rod. However, according to the processing machine 100 described above, for example, in the case of rock bolts, the outer casing 108 and the inner rod 109 having a length of, for example, 5 to 10 m are used, and the guide shell 107 is equal to or higher than that. A mechanism having a length is used, and a mechanism capable of supporting the outer casing 108 alone and moving backward alone is adopted. Accordingly, when the double-pipe outer casing 108 and the inner rod 109 having a length necessary for forming the drilling hole 300 of about 5 to 10 m are pulled out, the length can be accepted. it can. As a result, the outer casing 108 can be extrapolated to the outer periphery without removing the inner rod 109 that has been previously pulled out as described above, and the work can be performed more efficiently than before. Therefore, it is extremely suitable for the cut slope treatment in the stabilization method of the present invention for the purpose of shortening the construction period and reducing the construction cost.

  The processing machine 100 described above can be applied not only to rock bolt work but also to ground anchor work. That is, in the double-pipe type drilling device used in the conventional ground anchor construction, a plurality of 1-1.5 m outer casings and inner rods are drilled while being connected, and when pulling out, one by one It was necessary to do it while separating. However, even in this method, if the above-described processing apparatus 100 is used, the guide shell is longer than a length (several meters to several tens of meters) in which a plurality of 1-1.5 m members required for drilling in the ground anchor work are connected. Can be used to pull out the connected inner rod in one state at the same time, and also pull out the outer casing in the same state in the same way to make it extrapolate to the inner rod Thus, efficient work can be performed.

A Cut slope A0 Cut slope face A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, A11, A12,
A13, A14, A15 Longitudinal division work area B1, B2, B3 Horizontal division work area 1 Cutting machine 1 ', 100 Cutting machine 2a, 2A, 2b, 2B, 104 Wire for cutting slope treatment 3a, 3A, 3b, 3B, 103 winch 4a, 4A, 4b, 4B, 200

Claims (8)

A stabilization method for a natural slope having a cutting process for cutting a natural slope to form a cutting slope and a cutting slope treatment process for processing the formed slope.
Dividing the natural slope of the object to be cut into a plurality along the vertical direction and setting a laterally divided construction area, and dividing into a plurality along the width direction for each laterally divided construction area, Set up multiple longitudinally divided construction areas along the vertical direction of the slope,
In one horizontal direction divided construction area located in the upper stage among the horizontal direction divided construction areas, one vertical direction division construction among the plurality of vertical direction divided construction areas located in the one horizontal direction divided construction area. A cut process is carried out in the area, and then the cut slope treatment process to the one vertically divided construction area where the cut process has been performed, and the other in the one horizontal divided construction area or the lower stage thereof. A stabilization method for a natural slope, characterized in that the cutting process to the next vertical division construction area located in the horizontal division construction area is carried out in parallel . A stabilization method for a natural slope having a cutting process for cutting a natural slope to form a cutting slope and a cutting slope treatment process for processing the formed slope.
Dividing the natural slope of the object to be cut into a plurality along the vertical direction and setting a laterally divided construction area, and dividing into a plurality along the width direction for each laterally divided construction area, Set up multiple longitudinally divided construction areas along the vertical direction of the slope,
In one horizontal direction divided construction area located in the upper stage among the horizontal direction divided construction areas, one vertical direction division construction among the plurality of vertical direction divided construction areas located in the one horizontal direction divided construction area. A cut process is carried out in the area, and then the cut slope treatment process to the one vertically divided construction area where the cut process has been performed, and the other in the one horizontal divided construction area or the lower stage thereof. In parallel with the cutting process to the next vertical division construction area located in the horizontal division construction area of
When moving the construction area from the one laterally divided construction area to the other laterally divided construction area in the lower stage, a cutting process was finally performed in the one laterally divided construction area. In the cut slope treatment process to the vertical division area, and in the other horizontal division construction area located in the lower stage, the last cut slope treatment process is performed in the one horizontal division construction area. A method for stabilizing a natural slope, comprising performing a cutting process in parallel with another vertical division construction area that is not directly below the vertical division area .   At least one of the cut process and the cut slope treatment process is performed using a processing machine supported by a wire, and the processing machine is divided into the longitudinally divided construction area by using the pulling force of the wire. The stabilization method of the natural slope of Claim 1 or 2 implemented by moving by.   The cutting machine or the cutting slope processing step, the processing machine is provided with a pair of wires spaced in the width direction, and the upper ends of the wires above the longitudinally divided area Supporting, using the traction force of each wire to move the processing machine in the vertical division construction area, after performing the cutting process or the cutting slope treatment process in one vertical division construction area, The processing machine is moved to the upper part of the longitudinally divided construction area with each wire, and then the cutting machine in the other longitudinally divided construction area is moved to the other longitudinally divided construction area. The stabilization method of the natural ground slope of Claim 3 which implements a process or a cut slope processing process.   In the pair of wires, the interval between the pair of wires in the portion supported above the longitudinally divided construction area is wider than the interval between the pair of wires in the portion supported by the processing machine. The method for stabilizing a natural slope according to claim 4, which is stretched on the ground.   2. The processing machine according to claim 1, wherein a winch that winds or rewinds the wire is provided, and a guide member around which the wire is wound at a predetermined interval is provided in front of the winch. The stabilization method of the natural slope of any one of -5. The cut slope treatment process includes a step of performing an anchor work, and when performing the anchor work,
A processing machine comprising a double-pipe type drilling member of an outer casing and an inner rod and a guide shell that movably supports the drilling member,
The outer casing and the inner rod are moved forward along the guide shell toward a predetermined position on the cutting slope when drilling, and after drilling, the outer casing is positioned in the drilling hole. The processing machine according to claim 1, wherein the inner rod is moved backward along the guide shell, and then the outer casing is moved back onto the guide shell without removing the inner rod. The stabilization method of natural ground slope described in 2. As the processing machine,
A drifter that is movable along the guide shell and that is connected to the outer casing and the inner rod, and that applies a driving force when performing drilling with the outer casing and the inner rod,
A rotary pulling device that is movable along the guide shell independently of the drifter and that can hold the outer casing;
After drilling with the outer casing and inner rod, the outer casing is held by the rotary pulling device and disconnected from the drifter, and the drifter is retracted while the outer casing is positioned in the drilling hole. The inner rod is returned to the standby position of the guide shell, and after the filling operation of the filler into the outer casing located in the drilling hole, the rotary pulling device holding the outer casing is moved backward, The stabilization method of the natural slope of Claim 7 using the thing of the structure which extrapolates the said outer casing and can reconnect to the said drifter around the said inner rod of a standby state.

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