KR101841845B1 - Concrete dam drilling apparatus and method for drilling concrete dam vertically - Google Patents

Abstract

Disclosed are a concrete dam drilling apparatus for repairing leakage of a concrete dam and a method for vertically drilling a concrete dam. The method for vertically drilling a concrete dam comprises: a step of drilling a vertical hole in a downward direction at a vertical joint portion of an upper portion of the concrete dam using a drilling apparatus; and a step of expanding the vertical hole by inserting a first core bit into the vertical hole, wherein the drilling apparatus comprises: a rotating drill rod; a second core bit; and a bending suppression portion connected between the drill rod and the second core bit, and engaged with the vertical joint portion during drilling to suppress bending of the drill rod.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete dam damper and a concrete dam damper,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete dam damper and a concrete dam damper,

Concrete dam structures are not only very large in size, but also need to prevent deformation and cracks caused by tensile force caused by shrinkage and expansion of concrete due to ambient temperature. Therefore, Construction Joints Construction is done. The expansion joint is divided into a horizontal joint and a vertical joint.

The vertical joint of the dam is constructed by combining water stop and joint filler. Through this, water that can flow through through the vertical joint due to the shrinkage of the structure is received.

Since PVC, copper plate, and mortar pad used as the vertical joint panel can not guarantee a permanent lifetime, when the dam is deteriorated and the external variable larger than that of the initial design acts, the damage of the waterproof plate due to the excessive deformation of the vertical joint , Which leads to leakage, which causes the leakage of the dam structure itself.

In case of excessive leakage through the vertical joints (vertical joints) of the dam structure, the water leakage caused by poor construction of the waterfall plate installed at the time of construction of the dam, material separation of old concrete, leakage between the concrete lift of the dam, However, the biggest cause is excessive flow into vertical joints.

In order to repair the leakage of the concrete dam, a method of piercing the dam structure and injecting a grouting material such as acrylic index material into the vertical joint is widely used. Korean Patent Laid-Open Publication No. 2016-0021917 is a prior art related to drilling of a concrete dam structure.

The present invention provides a concrete dam drilling apparatus for repairing leakage of a concrete dam and a method for vertically drilling a concrete dam.

In particular, the present invention provides a concrete dam drilling apparatus capable of suppressing bending of the excavation direction, and a method of vertically drilling a concrete dam using the same.

According to an aspect of the present invention, there is provided a method for drilling a concrete dam, comprising: drilling a vertical hole downward from a vertical joint portion of a concrete dam using a drilling apparatus; And inserting a first core bit into the vertical hole to expand the vertical hole, the drilling apparatus comprising: a rotating drill rod; A second core; And a warp restraining part connected between the drill rod and the second core part, the warp restraining part being engaged with the vertical part during piercing to suppress warpage of the drill rod.

According to another aspect of the present invention, there is provided a method of drilling a concrete dam, the method comprising: preparing a drilling apparatus on a concrete dam; And drilling a vertical hole downwardly from a vertical joint of the upper portion of the concrete dam using the drilling apparatus, wherein the drilling apparatus comprises: a rotating drill rod; Corebite; And a warp restraining part connected between the drill rod and the core bit and engaged with the vertical joint part during boring to suppress warpage of the drill rod.

According to another aspect of the present invention, there is provided a rotary drill rod, Corebite; And a deflection restraining part connected between the drill rod and the core bit and combined with the vertical joint part during boring to suppress warpage of the drill rod.

According to the present invention, it is possible to drill a vertical hole of a desired diameter into a concrete dam at a lower cost by expanding the vertical hole after drilling.

Further, according to the present invention, it is possible to reduce warping of the drilling progress direction by suppressing warping of the drill rod during drilling.

Further, according to the present invention, the sludge generated by the completion system can be easily treated.

FIG. 1 is a view for explaining the concept of a method of vertically drilling a concrete dam according to an embodiment of the present invention.
2 is a view showing a concrete dam drilling apparatus according to an embodiment of the present invention.
Fig. 3 is a view showing a cross-sectional view of a bending inhibiting portion according to the present invention.
4 is a view showing a warp restraining portion and a vertical joint according to the present invention.
5 is a view showing a concrete dam drilling apparatus according to another embodiment of the present invention.
6 is a flowchart illustrating a method of vertically bending a concrete dam according to an embodiment of the present invention.
7 is a view for explaining a core bit used for expanding a vertical hole.
8 is a view for explaining a vertical boring method of a concrete dam according to another embodiment of the present invention.
9 is a view showing a vertical hole and a gallery according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

The present invention provides a method of vertically drilling a concrete dam and a concrete dam drilling apparatus used therefor.

In recent years, a method of repairing leaks by inserting a car washable material instead of a grouting material into a dam structure has been taken into consideration. In this case, a concrete dam having a diameter larger than the diameter of the hole into which the grouting material can be inserted It is necessary.

In addition, since such a column material replaces the vertical plate and the vertical plate arranged vertically, it is necessary to be inserted in a vertical hole formed in the downward direction of the concrete dam in the vertical joint.

Accordingly, the present invention proposes a method for drilling such a vertical hole and a drilling apparatus for drilling a vertical hole.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a view for explaining the concept of a method of vertically drilling a concrete dam according to an embodiment of the present invention.

As shown in FIG. 1, the present invention perforates a vertical hole 130 in a downward direction at a vertical joint portion 120 of a concrete dam upper portion 110.

The present invention performs perforation using a core bit rather than a DTH (Down The Hole) hammer method. Since the DTH hammer method is a striking type crushing method, a large impact may be applied to a concrete dam. In case of severe dam, a dam may be broken, so boring is performed using a core bit.

At this time, a vertical hole having a diameter larger than the hole diameter of the drilling standard (EX, AX, BX, NX, HX) may be required depending on the cargo material to be inserted into the vertical hole. A vertical hole is drilled using a core bit, and then a vertical core is expanded by using a second core bit having a diameter larger than that of the first core bit.

However, since the second core bit is not a standardized core core bit, it is costly to manufacture a customized core, and in the drilling process, the core bit is required to have dozens of core bits, , The present invention performs perforation in two steps extending the vertical hole after perforating the vertical hole.

As a result, according to the present invention, it is possible to drill a vertical hole of a desired diameter in a concrete dam at a lower cost.

On the other hand, the direction of drilling can be warped by various internal factors and external factors. The excavation direction may be warped by a spiral effect generated by the rotation of the core bit, or by a stone, gravel, or the like on the excavation progress path. In case of excavation of the ground or mountain, there is no risk of collapse of the ground or mountain even if the direction of the excavation is deflected and the error from the designed direction is large. However, if the direction of excavation progression in the concrete dam is large, It is necessary to suppress the bending progress direction of the excavation because the dam can collapse.

The excavating apparatus according to the present invention includes a warp restraining portion that engages with the vertical joint portion between the drill rod and the core bit so as to inhibit the excavation progression direction from being warped, and the vertical drilling method according to the present invention is characterized by using such a drilling apparatus , The degree of bending of the vertical hole can be reduced.

FIG. 2 is a view showing a concrete dam drilling apparatus according to an embodiment of the present invention, and FIG. 3 is a view showing a cross-sectional view of a bending inhibiting portion according to the present invention. 4 is a view showing a warp restraining portion and a vertical joint according to the present invention. In FIGS. 2 and 3, arrows indicate the direction of flow of the fluid, and in FIG.

Referring to FIG. 2, the drilling apparatus according to the present invention includes a drill rod 210, a core bit 220, and a deflection restraining part 230.

The drill rod 210 is connected to the body of the drilling device and rotates, and transmits power to the core bit 220. The deeper the depth of the vertical hole, the longer the drill rod 210 can be and can be pipe-shaped.

The core bit 220 is in direct contact with the concrete dam to perform the perforation. In one embodiment, a diamond core bit can be used.

The deflection restricting portion 230 is connected between the drill rod 210 and the core bit 220 and engages with the vertical joint portion during drilling to suppress warpage of the drill rod 220. [ The drill rod 210 is bent by various factors during drilling, and the direction of drilling progression can be deflected in accordance with the bending phenomenon of the drill rod 210. [ The warp restraining part 230 suppresses warpage of the drill rod 210, thereby reducing warping of the drilling progress direction.

Referring to FIGS. 2 and 3, the deflection restraining part 230 more specifically includes an inner frame 231, an outer frame 232, and a blade 233.

The inner frame 231 is connected to the drill rod 210 and the core bit 220 to rotate together with the drill rod 210 and to transmit the rotating force of the drill rod 210 to the core bit 220. The inner frame 231 may be connected to the drill rod 210 via the rod coupling 211 and may be connected to the core bit 220 through the reaming shell 221. At this time, the inner frame 231 can be connected to the rod coupling 211 and the reaming shell 221 by various coupling methods, and in one embodiment, the inner frame 231 can be coupled with a screw and a bolt.

The outer frame 232 is spaced apart from the inner frame 231 and surrounds the inner frame 231. That is, the outer frame 232 is physically separated from the inner frame 231 without being connected thereto. The inner and outer frames 231 and 232 are cylindrical in shape.

And the blade 233 protrudes from the outer frame 232 and is coupled to the vertical joint. A plurality of blades 233 may be formed on the outer circumferential surface of the outer frame 232 and are formed in the direction of the vertical hole, i.e., longitudinally long, so as to be coupled to the grooves of the vertical joints.

4, the core bit 230 punctures the vertical joint and moves to the lower portion of the concrete dam. Since the blade 233 has a shape of a blade formed on the outer circumferential surface of the outer frame 232 in the direction of perforation of the vertical hole, Can be coupled to the narrow gap of the vertical joint. 3, since the outer frame 232 is shaken due to vibration or the like at the time of perforation, even if the diameter of the warp restraining portion 230 is within the vertical hole diameter, the number of the blades 233 May be coupled to the vertical joint.

Therefore, even if the inner frame 231 connected to the drill rod 210 rotates, the outer frame 232 does not rotate together with the inner frame 231 by the blade 233 coupled to the vertical joint, have. Since the outer frame 232 is fixed without rotating so that the inner frame 231 can not be bent by the outer frame 232, the warpage of the drill rod 210 connected to the inner frame 231 can be suppressed have.

In addition, the vertical holes must be formed on the vertical joints. Since the warp restraints 230 are engaged with the vertical joints of all the lifts during drilling, the warp restraints 230 are provided with a guide Can play a role.

As shown in FIG. 4, since the vertical joints 410, 420, and 430 between the lifts (blocks) can be slightly shifted due to an error in the dam process, since a plurality of vertical joints 410 are formed in the outer frame 232, The blade 233 can be coupled to the vertical joints 410, 420, and 430 even if the vertical joints 410, 420,

The excavating apparatus according to the present invention may be equipped with a mud system as well as a general excavating apparatus. In this case, the fluid flows into the inside of the drill rod 210, and the introduced fluid is discharged through the core bit 220.

The fluid introduced through the inside of the drill rod 210 flows into the inner frame 231 having a cylindrical shape and the inner frame 231 discharges the fluid flowing through the inside of the drill rod 210 toward the outer frame 232 And a discharge groove 234 for discharging the gas. The fluid is introduced between the inner frame 231 and the outer frame 232 by the discharge groove 234 so that the friction between the inner frame 231 and the outer frame 232 is reduced, Can be suppressed.

The fluid used in the completion system may be water or mud, and the fluid discharged through the core bit 220 is discharged to the outside of the vertical hole through the groove between the blades 233.

5 is a view showing a concrete dam drilling apparatus according to another embodiment of the present invention.

5, the excavating apparatus according to the present invention may further include a fixing portion 510 for fixing the bending restraining portion 230 to the outside of the concrete dam, 110 to the main body 520 of the drilling rig.

Unlike the case where the entire bending restraining portion 230 is located inside the concrete dam, the area where the blade 233 and the vertical joint engage with each other is relatively small at the beginning of the bore where a part of the bending inhibiting portion 230 is located outside the dam The excavator according to the present invention fixes the deflection restraining part 230 outside the concrete dam by using the fixing part 510. [

The fixing portion 510 includes a coupling portion 511 coupled to the blade and a coupling adjustment portion 512 that adjusts the interval between the coupling portion 511 and the blade. The engaging portion 511 may be formed in a saw-tooth shape so as to be engaged with the blade 233.

FIG. 6 is a flowchart illustrating a method of vertically drilling a concrete dam according to an embodiment of the present invention, and FIG. 7 is a view for explaining a core bit used to extend a vertical hole.

In the vertical drilling method according to the present invention, a vertical hole is drilled downward (S610) in a vertical joint portion of a concrete dam upper portion by using a drilling apparatus, and a core hole is inserted into a vertical hole to expand a vertical hole (S620) .

7, the first vertical hole 710 is a vertical hole formed in step S610, and the second vertical hole 720 represents an extended vertical hole. The core bit 730 is a core bit used for vertical hole expansion.

The core bit 730 shown in FIG. 7 is different from the core bit 220 shown in FIG. 2 in that the protrusion 731 inserted into the first vertical hole 710 is protruded and has a larger diameter for extending the vertical hole. The protrusion 731 may have various shapes that can be inserted into the first vertical hole 710, such as a cylindrical shape or a conical shape.

The protrusion 731 is inserted into the first vertical hole 710 so that the core bit 730 moves to the lower portion of the concrete dam along the first vertical hole 710 and can expand the vertical hole, 720 can be accurately extended along the path of the first vertical hole 710 and the bending of the perforation advancing direction can be reduced. In the drilling apparatus of FIG. 2, vertical hole expansion can be performed by replacing the core bit 220 with the core bit 730 of FIG. At this time, since the protrusion 731 serves to guide the direction of the drilling progress like the blade, the drilling apparatus can be used in a form in which the bending inhibition portion is removed.

According to an embodiment of the present invention, a vertical hole can be drilled without a step of extending a vertical hole. In this case, the vertical drilling method according to the present invention is a method of drilling a concrete hole, And drilling a vertical hole in a downward direction at a vertical joint portion of the upper portion of the dam.

FIG. 8 is a view for explaining a vertical boring method of a concrete dam according to another embodiment of the present invention, and is a view showing a concrete dam in outline. 9 is a view showing a vertical hole and a gallery according to the present invention.

As shown in FIG. 8, the vertical punching method according to the present invention includes drilling a vertical hole as shown in FIG. 6, and between the upper part 110 of the concrete dam and the gallery 820 of the concrete dam, The vertical hole 810 can be formed so as to pass therethrough.

In the concrete dam, a gallery 820, which is a passage through which a person can pass, is installed. In the present invention, the upper part 110 of the concrete dam and the concrete dam The vertical hole 810 may be formed to pass through between the galleries 820.

Therefore, according to the present invention, the sludge generated when the vertical hole is expanded can be discharged through the gallery 820. 9, in the vertical punching method according to the present invention, the sludge discharged into the gallery 820 through the vertical hole 810 is introduced into the tank 910, the sludge settling in the tank 910 is removed can do. The tank 910 is located in the gallery 820, and a plurality of tanks can be connected according to the amount of sludge. The vertical hole 810 may be connected to the tank 910 through a separate sludge pipe 920 and the sludge pipe 920 and the vertical hole 810 may be coupled by a packing.

The sludge is produced by mixing crushed materials such as stone powder into water such as water. Since the crushed material is heavy, the sludge sinks into the tank 910 after a certain period of time after the sludge is introduced into the tank 910. Therefore, according to the present invention, only the sludge that has settled in the tank 910 is treated separately, whereby the sludge generated by the completion system can be easily treated.

Although not shown in the drawing, the vertical punching method according to an embodiment of the present invention may include, in accordance with an embodiment, a method of forming a hole in the gallery 820 near the gallery 820, for example, And further forming a through hole through the vertical hole and the gallery 820. [ In this case, the sludge can be discharged to the gallery 820 through the vertical holes and the through holes passing through the gallery 820. It is also possible to perforate the through hole so as to be perpendicular to the vertical hole or to tilt the through hole to the upper direction of the concrete dam by a predetermined angle so that the sludge can be discharged well.

After the sludge is discharged through the through holes, the through holes can be used for maintenance and maintenance of the car wash material. For example, after the sludge is discharged through the through hole, the packer can be inserted into the outlet of the through hole at the gallery 820 side. When the polymer car wash material is exchanged, the polymer car wash material is crushed, And can be discharged to the outlet of the gallery 820 side.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and specific embodiments and drawings. However, it should be understood that the present invention is not limited to the above- And various modifications and changes may be made thereto by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (14)

delete Drilling a vertical hole downward from a vertical joint of the upper portion of the concrete dam using a drilling rig; And
Inserting a first core into the vertical hole to expand the vertical hole,
The excavation apparatus
Rotating drill rod;
A second core; And
And a bending suppression portion connected between the drill rod and the second core bit and engaged with the vertical joint portion during drilling to suppress warpage of the drill rod,
The warp-
An inner frame connected to the drill rod and the second core, the inner frame rotating together with the drill rod;
An outer frame spaced apart from the inner frame and surrounding the inner frame; And
A blade projecting from the outer frame and coupled to the vertical joint,
Of the concrete dam.
3. The method of claim 2,
The inner frame
And a discharge groove for discharging the fluid introduced through the inside of the drill rod toward the outer frame
Of the concrete dam.
3. The method of claim 2,
The excavation apparatus
A fixing portion for fixing the deflection restraining portion outside the concrete dam,
Further comprising the steps < RTI ID = 0.0 > of: < / RTI >
Drilling a vertical hole downward from a vertical joint of the upper portion of the concrete dam using a drilling rig;
Inserting a first core into the vertical hole to expand the vertical hole;
Introducing the sludge discharged into the gallery of the concrete dam into the tank through the vertical hole; And
Removing the sludge that sinks into the tank,
The excavation apparatus
Rotating drill rod;
A second core; And
And a bending suppression portion connected between the drill rod and the second core bit and engaged with the vertical joint portion during drilling to suppress warpage of the drill rod,
The vertical hole
And an upper portion of the concrete dam,
Vertical boring method of concrete dam.
Drilling a vertical hole downward from a vertical joint of the upper portion of the concrete dam using a drilling rig;
Inserting a first core into the vertical hole to expand the vertical hole;
Forming a through hole penetrating between the gallery of the concrete dam and the vertical hole;
Introducing the sludge discharged into the gallery through the vertical hole into a tank; And
Removing the sludge that sinks into the tank,
The excavation apparatus
Rotating drill rod;
A second core; And
A bending restraining part connected between the drill rod and the second core bit and engaged with the vertical joint part during boring to suppress warpage of the drill rod,
Of the concrete dam.
The method according to claim 6,
The first core
Wherein the insertion portion inserted into the vertical hole has a protruding shape,
And a core of a larger diameter than the second core
Vertical boring method of concrete dam.
Preparing a drilling device on top of the concrete dam; And
Drilling a vertical hole in a downward direction at a vertical joint portion of the upper portion of the concrete dam using the excavation apparatus,
The excavation apparatus
Rotating drill rod;
Corebite;
A warp restraining portion connected between the drill rod and the core bit and engaged with the vertical joint portion during drilling to suppress warpage of the drill rod; And
A fixing portion for fixing the deflection restraining portion outside the concrete dam,
Of the concrete dam.
delete In a concrete dam drilling apparatus,
Rotating drill rod;
Corebite; And
And a deflection restraining portion connected between the drill rod and the core bit and engaged with a vertical joint portion of the concrete dam during piercing to suppress warpage of the drill rod,
The warp-
An inner frame coupled to the drill rod and the core bit and rotating with the drill rod;
An outer frame spaced apart from the inner frame and surrounding the inner frame; And
A plurality of blades extending from the outer frame and coupled to the vertical seams of the concrete dam,
Wherein the concrete dam excavating device comprises:
delete 11. The method of claim 10,
The inner frame
And a discharge groove for discharging the fluid introduced through the inside of the drill rod toward the outer frame
Wherein the concrete dam excavation apparatus comprises:
11. The method of claim 10,
The inner and outer frames
Cylindrical,
The blade
And the outer frame is formed on the outer peripheral surface of the outer frame in the direction of the vertical hole
Concrete dam excavation equipment.
In a concrete dam drilling apparatus,
Rotating drill rod;
Corebite;
A deflection restraining portion connected between the drill rod and the core bit and engaged with a vertical joint portion of the concrete dam during boring to suppress warpage of the drill rod; And
A fixing portion for fixing the deflection restraining portion outside the concrete dam,
Wherein the concrete dam excavating device comprises:

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