JP6054270B2 - Method of filling around unmounted pipes in sewer pipes - Google Patents

Description

  The present invention fills a cavity portion around a pipe of an unattached mounting pipe that is left in the soil with a poorly closed portion connected to the main pipe side of a sewer pipe with a soil stabilizer, etc. This is a technique related to a method for filling around a stationary mounting pipe in a sewer pipe in order to prevent occurrence.

  Recently, guerrilla-type heavy rains, which tend to occur frequently, result in a large amount of rain exceeding the expected amount in a short time. This phenomenon has frequently occurred, and such a phenomenon has also adversely affected the sewage pipe facilities laid in the ground.

  In other words, in sewerage pipe facilities that are equipped with a mounting pipe that allows drainage from the house side to flow down to the main pipe side, there is a gap around the mounting pipe due to aging or damage caused by environmental changes. Is often generated.

  Such a gap around the mounting pipe falls violently in a short period of time and becomes a refuge when the rainwater that is blown out from the manhole or side groove basin begins to draw. The earth and sand around the gap will also be drawn.

  As a result, the gap at the initial stage was originally not so large, but the earth and sand around the gap was repeatedly drawn away, and the capacity gradually increased, resulting in the hollowing of the road. The risk will increase accordingly.

  Therefore, it is necessary for the sewerage pipe facility to always correctly grasp the situation inside the pipe and the situation around the pipe from the viewpoint of preventing road collapse.

  In this case, when the pipe diameter of the main pipe in the sewerage pipe facility is 800 mm or less, since a person cannot enter the pipe directly, a visual inspection (submarine visual inspection) cannot be performed. In addition, the main pipe is connected with an attachment pipe for feeding wastewater from each household through a drainage basin or directly attached to the main pipe so that it cannot be visually inspected (submersible visual inspection). is there.

  Under these circumstances, after the existing house was dismantled and the road was expanded or the housing complex was built, the mounting pipe side connected to the main side would be in the soil. Are often left behind (referred to in this specification as “stand-alone attachment pipes”).

  And, such an abandoned mounting pipe is hidden in a state where it is buried in the soil, so that its exact position and specific in-pipe situation cannot be correctly grasped.

  FIG. 9 is an explanatory view schematically showing the conventional state of the abandoned mounting pipe left in the soil, which is in the abandoned mounting pipe 5 in the soil, and is originally connected to a sewage reservoir or the like. From the poorly occluded portion on the distal end portion 6 side, the earth and sand 2 enters into the pipe line 5a and flows into the main pipe 3 through the connection port 7 located on the proximal end side to be hollow in the poorly occluded portion. The portion 8 was generated, and the presence of the hollow portion 8 was a major factor causing the road to collapse.

  However, in order to accurately grasp the existence of such a cavity 8, as a premise, in order to accurately grasp the in-pipe situation with the main pipe 3 and the mounting pipe 4 including the left mounting pipe 5 in the sewer pipe facility. It is necessary to conduct a survey in the jurisdiction in advance.

  The inventor of the present application is aware of the problem in the pipe of the abandoned mounting pipe under such a problem consciousness, and then fills the pipeline including the hollow portion with a soil stabilizer and deposits the earth and sand into the abandoned mounting pipe. The following Patent Document 1 shows a “repair method of an abandoned mounting pipe connected to a sewer main pipe” that can prevent road cave-in and sediment discharge to the main pipe side by blocking the inflow. Has already proposed.

Japanese Patent No. 4782757

  That is, according to the disclosed technique of the above-mentioned Patent Document 1, after accurately grasping the position of the abandoned mounting pipe and the situation inside the pipe that are buried in the soil while being connected to the main pipe, It is possible to fill the cavity around the abandoned mounting pipe with a soil stabilizer from the main side and harden and block it, thereby preventing the inflow of earth and sand into the abandoned mounting pipe to the road collapse and sewer main side It is now possible to reliably prevent landslides from flowing.

  In addition, even if the surrounding area including the connection port on the base end side of the abandoned mounting pipe is not compatible with the installation of the filling mold, the peripheral area including the connection port is liquid-tight. After the viscous soil stabilizer mixed to the connection port side is pressure-filled and gelled through a closing means that temporarily closes to the gel, it is gelled, and then a filling form is installed to wait for the soil stabilizer to harden. As a result, it has become possible to perform repairs in a more flexible manner in relation to the specific burial condition of the abandoned mounting pipe.

  However, in order to fill the left mounting pipe with the soil stabilizer by the disclosed technique of Patent Document 1, it is necessary to always perform filling work from the main pipe side after feeding various robot devices into the main pipe. In addition to this, there is a disadvantage that not only skill is required to perform appropriate work, but also various necessary work itself is complicated and much time and cost are required.

  In view of the above-mentioned problems seen in the prior art, the present invention has a cavity portion around a pipe of a stationary mounting pipe that is left in the soil with a poorly closed portion connected to the main side of the sewer pipe. Sewage sewer that can prevent the sinking of the road and the inflow of the sediment to the main pipe side by preventing the sediment flow from the cavity part side to the inside of the installation pipe by filling the soil stabilizer directly from the ground side. It is an object of the present invention to provide a method for filling around a standing mounting pipe in a pipe.

The present invention has been made to achieve the above object, and a TV camera-equipped traveling robot that can be freely controlled is sent into the main sewer through a manhole, and the main investigation of the main camera included in the traveling robot is performed. A sewer pipe inspection process that is performed by a sub camera installed in the traveling robot so that it can freely move back and forth, and when the sub camera detects that the mounting pipe is a stand-alone pipe, it moves into the tip of the pipe The abandoned mounting pipe position data acquisition step for acquiring the signal transmitted from the child camera side as the distal end position data on the ground, and the main pipe positioned on the base end side of the identified lefting mounting pipe A connection port closing step for closing the connection port, and a soil stabilizer pressure feed hole and an air vent hole that reach the inside of the distal end portion of the standing mounting pipe on the ground based on the distal end portion position data. And confirming the correspondence between the drilling process of drilling from the soil stabilizer pressurizing hole or the air venting hole into the distal end portion of the standing mounting pipe and checking the correspondence with the known distal end position data. Before the filling internal reconfirmation step and until the soil stabilizer is ejected from the air vent pipe routed through the air vent hole, the soil stabilizer is supplied by the pressure feed pipe routed through the soil stabilizer pressure feed hole. a soil stabilizer filling step of pumping from the ground side to the left mounting tube, and a ground restoration step of restoring the land surface closes the said soil stabilizer pumping hole after filling is completed and the air vent hole in the state before the excavation The most important feature is that at least it has passed.

  In this case, after passing through the abandoned mounting pipe position data acquisition step, the edge of the drilling drill fed from the ground side into the distal end of the abandoned mounting pipe based on the known tip position data is transferred to the child camera. The process may be shifted to the next process after confirmation.

  According to the present invention, the position of the abandoned mounting pipe left in the soil under the state of being connected to the main pipe of the sewer is accurately determined, and the connection port with the main pipe is closed. Later, the interior space can be filled with a soil stabilizer to ensure the closure, including the cavity where the poorly closed part is located and the gap around the pipe. The inflow can be prevented to prevent the occurrence of road depression.

  Moreover, the soil stabilizer can be filled directly into the internal space from the ground side through the pressure feed pipe while venting air through the air vent pipe, thus realizing labor saving and efficiency improvement of the work itself. The time and cost required for the work can be reduced.

  After the mounting pipe position data acquisition step, the cutting edge of the drilling drill sent from the ground into the tip of the left mounting pipe based on the known tip position data is confirmed through the sub camera and then the next. In the case of shifting to the process, the soil stabilizer filling operation can be performed more reliably and accurately while grasping the state of the pipe on the distal end side of the standing mounting pipe more accurately.

Explanatory drawing which shows the outline | summary of the investigation process in a sewer pipe in this invention. Explanatory drawing which shows the leaving attachment pipe position detection process in this invention in relation to the receiving apparatus on the ground and the sub camera of FIG. Explanatory drawing which shows the outline | summary of the auxiliary | assistant process which can be performed after passing through the neglected attachment pipe position data acquisition process in this invention. Explanatory drawing which shows the state of the pre-processing work required for the base end connection port obstruction | occlusion process in this invention. Explanatory drawing which shows the outline | summary of the base end connection port obstruction | occlusion process in this invention. Explanatory drawing which shows the outline | summary of the excavation process in this invention. Explanatory drawing which shows the outline | summary of the reconfirmation process before filling in this invention. Explanatory drawing which shows the outline | summary of the soil stabilizer filling process in this invention. Explanatory drawing schematically showing the conventional state of a left-handed mounting pipe left in the soil

  As is apparent from FIGS. 1 to 8, the present invention includes a main pipe 12 in the sewer pipe 11 and a mounting pipe 13 including a leaving mounting pipe 14 connected to the main pipe 12 through a connection port 17. It is implemented by applying it to sewer pipe facilities.

  That is, the present invention acquires a sewer pipe in-situ investigation process for grasping the internal state of each of the attachment pipes 13 including the main pipe 12 and the abandoned attachment pipe 14 and the tip position data of the identified abandonment attachment pipe 14. The step of obtaining the position of the abandoned mounting pipe, the step of closing the connection port 17 for closing the connection port 17 of the abandoned mounting pipe 14 with the main pipe 12, the hole 22 for feeding the soil stabilizer and the hole 23 for ventilating the ground 21 A hole excavation process for excavating from the inside, and an internal reconfirmation process before filling for confirming the correspondence between the known position data of the tip by the fiber scope 26, and a soil stabilizer 29 is pumped to the inside of the left mounting pipe 14 It is performed through at least a soil stabilizer filling process for satisfying and a ground restoration process for restoring the ground 21 to a state before excavation.

Among these, in the sewer pipe investigation process, as shown in FIG. 1, a TV camera-equipped traveling robot 31 that can be freely controlled from the ground side is sent into the main pipe 12 through a manhole (not shown), and the parent camera 3 according tract investigation and the child camera 35 by 4 is carried out by passing through a mounting tube survey.

  The TV camera-equipped traveling robot 31 used in this case has a robot body 32 equipped with a parent camera 34 made of a TV camera, and a child camera 35 also made of a TV camera can be freely controlled by the robot body 32. Has been deployed. In addition, the TV camera-equipped traveling robot 31 is provided with a main body via a power cable interposed between a robot and a ground work vehicle (not shown) by disposing, for example, a wheel whose rotation is controlled via a stepping motor in the robot body 32. 12 can be controlled to advance and retreat.

  The child camera 35 can be moved forward and backward by controlling the rotation of the feed roller 33 arranged in a pair with the robot main body 32 based on an instruction from the ground and rotating it forward or backward. It is like that. In addition, as shown in FIG. 2, the child camera 35 has a movable portion 37 having a lens body portion 38 attached to the fixed main body portion 36 so that it can rotate 450 degrees in the horizontal direction A. The lens body 38 itself is attached to the portion 37 so that it can rotate 300 degrees in the vertical direction B.

For this reason, the TV camera-equipped traveling robot 31 can perform an in-main survey by side-viewing the inside of the main pipe 12 using the parent camera 34 with an illuminating lamp. its inner circumferential can be ascertained whether the left mounting tube 14 which sediment 61 is flowing by photographing lateral vision by feeding the child camera 3 5 per it to record the situation on videotape You can also do it.

  In other words, the child camera 35 sent into the internal space 18 from the connection port 17 side of the abandoned mounting pipe 14 has the occlusion defect portion 19 located on the distal end portion 15 side and communicating with the cavity portion 20 as a display in the work vehicle. Information is transmitted so that it can be converted into data as detailed in-jurisdiction conditions while being shown as a video and notifying the operator of its existence. The in-pipe situation data obtained in this way is used as reference data for determining the amount and type of materials used including the soil stabilization material 29, and is also used as preparation data for various necessary equipment. Become.

  Further, when the attachment tube 13 is specified as the attachment tube 14 by the child camera 35, the unused attachment tube position data acquisition process is transmitted from the child camera 35 side that has advanced into the distal end portion 15. This is done by acquiring the signal as tip position data on the ground.

  That is, the child camera 35 positioned as shown in FIG. 1 in the distal end portion 15 with the unoccluded portion 19 of the abandoned mounting pipe 14 is directed toward the receiver 51 possessed by the worker waiting on the ground. Send E.

  The receiver 51 receives the electromagnetic wave E transmitted from the child camera 35, and displays the position of the distal end portion 15 of the left mounting tube 14 and the depth thereof as an offset diagram regarding the distal end portion position data as shown in FIG. And can be stored in memory so that it can be reproduced at a later date. The offset diagram can also be created so that the position of the distal end portion 15 of the abandoned mounting pipe 14 can be specified in relation to, for example, three boundary points (reference points) not shown.

  After the neglected mounting pipe position data acquisition step in the present invention, after installing the excavator 55 as shown in FIG. 3 at a predetermined position on the ground specified based on the known tip position data, The excavation drill 56 is fed in the direction of the distal end portion 15 of the leaving attachment pipe 14, and the blade edge 57 that has reached the distal end portion 15 is visualized and visually confirmed by the sub camera 35, thereby further determining the position of the distal end portion 15. You may transfer to the following process, after passing through the auxiliary process for performing correctly.

  On the other hand, in the connection port closing step as the next step, the connection port 17 with the main pipe 12 in the sewer pipe 11 located on the base end portion 16 side of the specified leaving attachment pipe 14 is cut into the cutting robot 41 shown in FIG. And it is performed by closing using the resin injection robot 45 shown in FIG.

  That is, the connection port closing step is, for example, described in the patent publication related to Japanese Patent No. 3626720 that has already been developed and developed by the inventor of the present application, and “a repair method for a mounting pipe including a connection portion with a sewer main”. By passing through the process shown by (4), it is carried out by closing the connection port 17 with the main pipe 12 in the sewer pipe 11 located on the base end portion 16 side of the leaving attachment pipe 14.

  In this case, the cutting robot 41 shown in FIG. 4 has a first position located on the connection port 17 side of the abandoned mounting pipe 14 while an operator visually confirms on the ground by an image sent from the TV camera 42 mounted thereon. By cutting each so that the shelf 12a is formed on the outer peripheral surface side of the main pipe 12 facing the first-stage tube end surface 14a, a gap 14b is formed between the two through the shelf 12a.

  Further, the resin injection robot 45 shown in FIG. 5 has a transparent mold 46 with a plurality of injection ports 46 a made of a transparent acrylic plate or the like on the inner peripheral surface of the main pipe 12 located in the vicinity of the connection port 17 of the leaving attachment tube 14. After the installation, one injection port 46a is opened and a resin mortar 48 made of epoxy resin or the like is injected. After this injection, the injection port 46a is closed, and then the other injection port 46a is opened and the resin mortar 48 is opened again. The process of injecting is repeated.

  At this time, the injection state of the resin mortar 48 that can be viewed from the inside of the pipe through the transparent mold 46 is determined by the image sent from the TV camera 47 mounted on the resin injection robot 45. 4 can be visually confirmed on the ground, so that the injection can be completed when the connection port 17 side including the gap 14b shown in FIG. After the completion of the injection, the transparent mold 46 is removed after the curing time of the resin mortar 48 has elapsed, and the connection port closing step is completed by performing necessary finishing.

  The hole excavation process performed after the connection port closing process is completed in this way is performed on the distal end portion 15 of the abandoned mounting pipe 14 based on the already acquired and known distal end position data of the abandoned mounting pipe 14. It is performed by excavating the soil stabilizer pressurizing hole 22 and the air venting hole 23 separately from the ground side so as to penetrate.

  Specifically, as shown in FIG. 6, the excavator 55 is installed at a predetermined position on the ground determined based on the known tip position data, and the excavation drill 56 is directed toward the tip portion 15 of the neglected mounting pipe 14. By feeding separately, the soil stabilizer pressurizing hole 22 and the air vent hole 23 are excavated separately.

  In this case, the drilling drill 56 to be fed reaches and penetrates into the distal end portion 15 of the left mounting tube 14 when the cutting edge 57 reaches the position and depth indicated by the known distal end portion position data. Since the excavation resistance on the 56 side is almost lost, the completion of the excavation work can be known at that time. In addition, if the first one is, for example, the soil stabilizer pressure feed hole 22, the excavation work of the second air vent hole 23 is performed through the same procedure.

  In the internal reconfirmation step before filling, the fiberscope 26 is fed into the distal end portion 15 of the leaving attachment pipe 14 from the soil stabilizer pressure feed hole 22 or the air vent hole 23, and the internal state of the distal end portion 15 is monitored on the ground 27 It is displayed by checking the correspondence with known tip portion position data.

  In the soil stabilizer filling step, as shown in FIG. 8, the soil stabilizer filling plant 28 is arranged on the ground, and the air vent pipe 25 piped through the air vent hole 23 contains, for example, foamy air. Until the soil stabilizer 29 is ejected, the soil stabilizer 29 is pumped through the soil stabilizer pressurizing hole 22 and is connected to the soil stabilizer filling plant 28 side and one end thereof from the pumping pipe 24 connected thereto. Is carried out by being pumped into the internal space 18 of the leaving attachment tube 14. In addition, as the soil stabilizer 29, the cement silica type which is an inorganic suspension type rich in acid resistance and alkali resistance (for example, "Allophix (registered trademark) MC-2" of "Pacific Material Co., Ltd.") Can be suitably used, but a cement-based filler called foam mortar or air mortar can be used if desired.

  In this way, when the soil stabilizer 29 is pumped into the distal end portion 15 of the leaving attachment pipe 14, the leaving attachment pipe 14 is configured in four stages as shown in FIG. Under circumstances where a gap S is formed at the boundary part between the first stage where the connection port 17 is located and the adjacent second stage, or at the boundary part between the third stage and the fourth stage. However, in addition to the internal space 18 and the gap S, the surroundings of the stationary mounting pipe 14 including the cavity 20 communicating with the poorly closed portion 19 can be surely filled with the soil stabilizer 29 as shown in FIG. Become.

  In this way, the ground restoration process performed after the work of filling the soil stabilizer 29 around the abandoned mounting pipe 14 is completed, the pressure feed pipe 24 is removed from the soil stabilizer pressure feed hole 22, and the air is vented from the air vent hole 23. After removing the pipes 25, the soil stabilizer pressurizing hole 22 and the air vent hole 23 are filled. For example, when the ground 21 side is covered with asphalt, it is temporarily paved to return to the state before excavation. Is done.

  By completing all the steps in this manner, the abandoned mounting pipe 14 is not limited to the internal space 18 including the gap S as shown in FIG. In addition, the soil stabilizer 23 is filled, and the ground 21 can be restored to the state before excavation.

  For this reason, according to the present invention, the position of the abandoned mounting pipe 14 left in the soil under the state of being connected to the main pipe 12 of the sewer is specified, and the connection port 17 with the main pipe 12 side is specified. After the blockage, the earth space 61 including the poor blockage portion 19 and the cavity 20 communicating with the interior space 18 are filled with the soil stabilizer 29 and hardened, so that the earth and sand 61 flows into the left mounting pipe 14. It is possible to prevent the depression of the ground 21 by preventing the earth 21 from being taken out and flowing out when the large amount of rain water or the like flows down in the main pipe 12. it can.

  In addition, the filling of the soil stabilizer 29 can be performed by directly pumping into the internal space 18 from the ground side through the pumping pipe 24 while venting the air with the air vent pipe 25, so that labor saving of the work itself. It is also possible to reduce the time and cost required for work by realizing higher efficiency.

  Further, the cutting edge 57 of the excavation drill 56 fed from the ground into the distal end portion 15 of the abandoned mounting tube 14 on the basis of the known distal end portion position data after the attachment tube position data acquisition step is passed through the slave camera 35. When the process proceeds to the next process after confirmation, the filling operation of the soil stabilizer 29 can be performed more reliably and accurately while correctly grasping the state of the pipe on the distal end portion 15 side of the leaving attachment pipe 14. .

  In addition, since the periphery of the connection port 17 located on the base end portion 16 side of the leaving attachment pipe 11 is closed with a cured resin mortar 48 as shown in FIG. Even if a strong liquid flows down in the main pipe 12, it is possible to reliably prevent the soil stabilizer 29 filled in the standing mounting pipe 11 from being corroded and to enhance its durability. .

DESCRIPTION OF SYMBOLS 11 Sewer pipe 12 Main pipe 12a Shelf part 13 Attachment pipe 14 Standing attachment pipe 14a Pipe end surface 14b Space | gap 15 Tip part 16 Base end part 17 Connection port 18 Internal space 19 Occlusion defect | deletion part 20 Cavity part 21 Ground 22 Soil stabilizer pressure feed hole DESCRIPTION OF SYMBOLS 23 Air venting hole 24 Pressure feed pipe 25 Air vent pipe 26 Fiberscope 27 Monitor 28 Soil stabilizer filling plant 29 Soil stabilizer 31 TV robot carrying traveling robot 32 Robot main body 33 Feed roller 34 Parent camera 35 Child camera 36 Fixed main body part 37 Movable part 38 Lens unit 41 Cutting robot 42 TV camera 45 Resin injection robot 46 Transparent mold 46a Inlet 47 TV camera 51 Receiver 52 Display unit 55 Drilling device 56 Drilling drill 57 Cutting edge 61 Earth and sand E Electromagnetic wave S Gap

Claims (2)

A driving robot equipped with a TV camera that can be freely controlled is sent into the main sewer via the manhole, and the main camera is equipped with a main camera to investigate the main robot, and a child camera that can be moved forward and backward in the traveling robot. Survey process in sewer pipes conducted in the survey,
An abandoned mounting tube that acquires a signal transmitted from the side of the child camera that has been moved into the distal end when the mounting tube is identified as an abandoned mounting tube by the child camera on the ground as distal end position data. A position data acquisition process;
A connection port closing step for closing the connection port with the main pipe located on the base end side of the identified leaving attachment pipe;
A hole excavation step of excavating a soil stabilizer pumping hole and an air vent hole reaching the inside of the distal end portion of the standing mounting pipe from the ground side based on the distal end position data;
An internal reconfirmation step before filling for checking the correspondence with the known tip portion position data by sending a fiberscope into the tip portion of the standing mounting pipe from the soil stabilizer pressure feed hole or the air vent hole,
The soil stabilizer is pumped from the ground side into the left mounting pipe by the pumping pipe piped through the soil stabilizer pressure feeding hole until the soil stabilizer is ejected from the air vent pipe piped through the air vent hole. A soil stabilizer filling process,
Left attachment tube around the filling method in the sewer pipe, characterized in that undergoes at least a ground restoration step of restoring the land surface closes the said soil stabilizer pumping hole after completion of filling and the air vent hole in the state before the excavation . After passing through the abandoned mounting pipe position data acquisition step, the cutting edge of the excavation drill sent from the ground side into the front end of the abandoned mounting pipe is confirmed via the child camera based on the known tip position data. Then, the method of filling the surroundings of the standing pipe in the sewer pipe according to claim 1, which moves to the next step.

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