KR20170127309A - Construction method of underground continuous wall and it`s apparatus using the wire saw - Google Patents

Abstract

In a continuous watertight wall grout method, a construction method of underground continuous watertight wall using a wire saw which forms an underground continuous watertight wall without a disconnected portion on the ground by filling a gap of the cut ground that is cut by using the wire saw with a watertight material. As described above, according to the present invention, the ground is cut to a certain thickness and depth by using the wire saw, and the gap of the cut ground is filled with the watertight material, thereby forming an underground continuous water wall free from the disconnected portion.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing an underground continuous water wall using a wire saw,

The present invention relates to a method and apparatus for installing an underground continuous water wall in a ground using a wire saw, and more particularly, to a method and apparatus for installing an underground continuous water wall in a ground by using wire saws, The present invention relates to a method and apparatus for installing an underground continuous water wall,

1 to 3, in the conventional augmented grout method, the ground is pierced to a predetermined depth at a predetermined interval from the excavation part, and then the pouring pipe is installed up to the depth of the pore hole. Then, (Chemical solution) is injected into the pores of the ground to lower the permeability of the ground, which is usually referred to as a chemical solution injection method.

As shown in FIGS. 4 to 6, when the depth of the piercing hole is deepened, the pierced hole is opened or shifted from the adjacent hole, so that the poured water injected into the pierced hole is infiltrated into the wrong position.

In addition, the seawater injected into the ground penetrates to a long distance along the median line with low penetration resistance, and splitting or pulsed injection occurs, so that the point where the actual order is required remains in the original ground state. Therefore, there is a problem that groundwater is introduced through this portion due to the generation of the wall cutoff portion (grout blind spot).

In addition, loss of lagging material occurs due to injection in a split or pulsed manner.

SUMMARY OF THE INVENTION The present invention provides a method and apparatus for constructing an underground continuous water wall by cutting a ground to a predetermined thickness and a predetermined depth using a wire saw and filling a car wall material in a gap between the cut ground .

However, the object of the present invention is not limited to the above-mentioned object, and another object which is not mentioned can be understood by those skilled in the art from the following description.

In order to achieve the above object, the present invention provides an underground continuous water wall installation apparatus using a wire saw, which is a continuous water wall grouting method, comprising: two spaced floats inserted into a ground in a predetermined wall installation scheduled interval; Wherein the cutting tool includes a rotating means for rotating the wire saw and a rotating means for rotating the wire saw to rotate the wire saw so as to generate a tensile force, And a pulling means for moving the rotating means in a vertical direction and a downward direction to rotate the wire saw in an endless track and generate a tensile force to cut the ground to a predetermined depth, Thereby forming an underground continuous water wall which is filled with ashes and has no cutaway portion The underground continuous chasubyeok installed device using the wire saw is provided.

Further, the rotating means of the cutting device may comprise a drum connected to the wire saw and a first driving portion for rotating the drum, and the towing means may include a chain provided with the first driving portion, And a second driving unit for driving the wire saw.

In addition, the holder is provided with an H-beam, and a plurality of rollers are formed to move the wire saw in a space between the flanges of the H beam, the roller being formed at one end of the H beam A third roller formed at the other end of the H beam and switching the traveling direction of the wire saw by 180 degrees; and a second roller provided between the first roller and the third roller, And a second roller which is moved to one side and the other side between flanges of the wire saw and switches the traveling direction of the wire saw to 90 degrees.

The gripper may include a hydraulic cylinder provided in the gripper, and a hydraulic cylinder disposed in the hydraulic cylinder. The gripper may include a gripper for fixing the holder to the lower end of the gripper by a tensile force of the wire saw, And a gripper pad protruding outward from the gripper by hydraulic pressure. The apparatus for installing an underground continuous water wall using a wire saw is provided.

  And a connection bit for connecting the plurality of bits by a connecting rod so as to connect the cutting rods, the cutting rods, the cutting rods, the cutting rods, and the cutting rods, Are connected to each other by a bolt nut in a two-part structure in the longitudinal direction.

In addition, the method for installing an underground continuous water wall using the underground continuous water wall installation apparatus includes a first step of drilling a plurality of connection holes, which are perforated holes, at the edge of the water wall installation scheduled section,

A second step of installing a casing in the plurality of connection holes and filling the first connection hole and the second connection hole among the plurality of connection holes with a filler material; A third step of inserting the cradle in which the wire saw is mounted on the first connection hole and the second connection hole;

A fourth step of pulling out the casing provided in the first connection hole and the second connection hole, a fifth step of mounting the wire saw to the cutting device provided between the first connection hole and the second connection hole,

A sixth step of cutting the ground by actuating the cutting device to form a cut surface connecting the first connection hole and the second connection hole; and a step of cutting the first connection hole and the second connection hole in the second step, A seventh step of replenishing the filler when the ash is filled with the cutting surface and the cutting depth of the ground becomes a predetermined depth or more,

An eighth step of cutting the ground to a predetermined depth to form a first water wall; The method of installing an underground continuous water wall using a wire saw is provided.

The method may further include the following steps of: after the eighth step, filling the third connection hole in the plurality of connection holes with a carburst material; and a step of drawing out the cradle in the first connection hole, An eleventh step of pulling out the casing provided in the third connection hole, a twelfth step of rotating the cradle provided in the second connection hole by 90 DEG toward the third connection hole, , The cutting device is provided between the second connection hole and the third connection hole, the wire saw is connected to the cutting device, and the sixth step to the eighth step are repeated in order to complete the water outlet wall. A method of installing an underground continuous water wall using a saw is provided.

In addition, the connection hole may be drilled 0.5m to 1.5m deeper than the planned wall installation depth, thereby providing an underground continuous water wall installation method using the wire saw.

As described above, according to the present invention, the ground is cut to a certain thickness and depth by using a wire saw, and the car wall material is filled in the gap of the cut ground, thereby forming an underground continuous water wall free from the disconnected part .

1 is a plan view of a conventional order grout method;
Fig. 2 is a vertical cross-sectional view of a water inlet wall by a conventional augmented grout method; Fig.
3 is a cross-sectional view of A = A in Fig. 2;
4 is a vertical cross-sectional view of a faulty water barrier wall generated by a conventional anchor grout method.
5 is a sectional view of BB of Fig.
FIG. 6 is a conceptual drawing of a bulb sphere according to a conventional order grouting method; FIG.
7 is a plan view showing an embodiment of a water barrier wall according to the present invention.
8 is a process diagram of a method for installing an underground continuous water wall using a wire saw according to the present invention.
9 is a sectional view of a finished first water wall according to the present invention.
10 is a detailed view of the "E" portion of FIG.
11 is a detailed view of the portion "F" in Fig.
12 is a detailed view of the "G" portion of FIG. 8;
13 is a CC and DD sectional view of Fig. 8;
Fig. 14 is a configuration diagram of a wire saw according to the present invention; Fig.
15 is a block diagram of a bit according to the present invention;
16 is a configuration diagram of a connection bit according to the present invention;

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

As shown in FIG. 7 and FIG. 7, the installation apparatus for installing the underground continuous water wall using the wire saw according to the present invention comprises two spaced apart support bases 10a and 10b inserted into the ground A cutting device (30) is provided between the spaced apart mounts (10a, 10b).

The spacers 10a and 10b and the wire saw 20 are disposed on the cutting device 30 and the cutting device 30 and the wire saw 20 ) Form a triangle.

The cutting device 30 is provided with a rotating means for rotating the wire saw and a pulling means for moving the rotating means in a vertical direction and a downward direction to pull the wire saw to generate a tensile force, Is rotated in an infinite orbit and a tensile force is generated to cut the ground to a predetermined depth.

The rotating means of the cutting device 30 includes a drum 31 connected to the wire saw 20 and a first driving part 32 for rotating the drum 30, A chain 33 provided with a first driving part 32 and a second driving part 34 rotating the chain 33.

8, the drum 31 connected to the wire saw 20 is rotated to rotate the wire saw 20 in an endless track between the spacers 10a and 10b, The drum 31 is lifted to generate a tensile force on the wire saw 20 so that the ground is cut by the rising height of the drum 31. (Position 1 → Position 2)

Therefore, by using the wire saw 20, the ground is cut to a certain thickness and depth, and the car wall material is filled in the gap of the cut ground, thereby forming an underground continuous water wall free from the disconnected part.

The holder 10 is provided with an H-beam, and a plurality of rollers are formed so that the wire saw 20 moves in a space between flanges of the H beam 10. [

10 to 12, the first roller 11 rotates in the direction of the H-beam (i.e., the first roller 11, the second roller 12 and the third roller 13) 10b so that the wire saw 20 is stretched.

The third roller 13 is formed at the other end of the H beam 10b to switch the advancing direction of the wire saw by 180 degrees and the second roller 12 rotates about the first roller 11 and the second roller 12, 3 rollers 13 and is moved to one side and the other side between the flanges of the H beam 10b to switch the traveling direction of the wire saw 20 to 90 degrees.

The second roller 12 is disposed inside the roller mounting block 12a. The second roller 12 is provided with a separate roller mounting block 12a for moving the second roller 12 in one direction and the other direction. .

In addition, a bracket 15 protruding inward is formed at a flange side end of the H beams 10 and 10b to prevent the roller fixing block 12a from being separated.

Meanwhile, since the cradle 10 can be pulled out due to the tensile force of the wire saw 20 during cutting, the gripper 14 is provided at the lower end, which is the side where the cradle 10 is inserted into the ground.

The gripper 14 includes a hydraulic cylinder (not shown), and a gripper pad 14a protruded to the outside of the gripper 14 by the hydraulic pressure of the hydraulic cylinder.

The gripper pad 14a is protruded outward by the hydraulic pressure of the hydraulic cylinder during cutting so as to be fixed in the ground so as to prevent the cage 10 from being pulled out by the tensile force of the wire saw 20 (serving as an anchor).

14, the wire saw 20 includes a wire rope 21, cutting bits 22 provided at predetermined intervals in the wire rope 21 and having a plurality of metal tips formed on the outer circumferential surface thereof, And a connecting bit 23 connecting a plurality of the bits 22 by a connecting rod 23-1 so as to connect the disconnected portion of the wire rope 21 to each other.

15, the bit 22 is divided into two in the longitudinal direction and is disassembled and coupled by a bolt nut, and a wire rope mounting groove is formed inside the bit 22 to be mounted on the wire rope 21 do.

The thickness of the cutting gap is determined by the diameter d of the bit 22 and the diameter d of the bit 22 is replaced with a bit corresponding to the thickness of the desired wall to adjust the thickness of the wall.

16, the connection bit 23 is divided into two in the longitudinal direction and is disassembled by a bolt nut and connected by the connecting rod 23-1. The connecting rod 23-1, Spheres having a diameter larger than that of the connecting rods 23-1 are formed at both ends of the connecting rods 23-1 and 23-1.

Hereinafter, a method for installing an underground continuous water wall using a wire saw according to the present invention will be described based on the above-described apparatus for installing an underground continuous water wall using a wire saw.

First, a plurality of connection holes H, which are perforated holes, are drilled at the edge of the expected wall installation scheduled section. (Step 1)

At this time, the connection hole (H) is pierced by 0.5 m to 1.5 m deeper than the predetermined wall installation depth.

A casing (not shown) is provided in the plurality of connection holes H, and the first connection hole and the second connection hole among the plurality of connection holes H are filled with a filler metal. (Step 2)

The wire saw 20 is prevented from collapsing and the wire saw 20 can be freely moved between the flange and the airbag of the cradle 10a or 10b by filling the car wall material into the connection hole H, .

Meanwhile, it is preferable that the main material of the water-repellent material is a common portland cement and it is mixed with water to be used as a liquid phase, and the water-base material is mixed with a stabilizer to maintain the liquid state until the cutting of the ground and the filling of the water- do.

In addition, a proper amount of viscous material is added so that the charged sequestering material is not diluted with ground water.

After the second step, the cradle (10a, 10b) to which the wire saw (20) is connected is inserted into the first connection hole and the second connection hole. (Step 3)

The wire saw 20 connected between the first connection hole and the second connection hole and connected to the cradles 10a and 10b is rotated by rotating the wire saw 20 installed in the first connection hole and the second connection hole And the wire saw 20 is connected to the cutting device 30 for cutting the ground. (Step 5)

The cutting device 30 is operated to cut the ground to form a cutting surface I connecting the first connection hole and the second connection hole. (Step 6)

Referring to FIG. 8, the wire saw 20 is rotated to move from the second connection hole to the first connection hole according to an embodiment of the present invention.

At this time, while the second driving unit 34 is operated, the chain 33 is operated and the drum 31 is raised, and the ground is cut by the tensile force of the wire saw 20, As the ground is cut, the wire saw 20 is gradually lowered from the position 1 to the position 2.

When the rising height of the drum 31 reaches the limit, the operation of the drum 31 is stopped, and the position of the drum 31 is lowered to the lowest position. Then, the connection bit 23 of the wire saw 20, .

After the length of the wire rope 21 is adjusted, the cut portion of the wire rope 21 is reattached to the connecting bit 23 and the wire saw 20 whose length has been adjusted is mounted on the drum 31, Reduce to orbit.

Referring to FIGS. 8 and 13, as the depth of cut becomes deeper due to the rotation direction of the wire saw 20, the cut soil accumulates in the first connection hole.

Accordingly, it is preferable to fill the first connection hole with a low concentration of carburizing material in advance in consideration of the accumulated amount of cut soil in the first connection hole. The cut soil is transported toward the ground in the upward movement of the wire saw 20, A vent pipe is installed at the proper depth in the ball and discharged to the ground.

In addition, the orderly material discharged to the ground can be reused after filtering the cut soil.

In addition, when the cutting surface I is formed, the order material charged in the first connection hole and the second connection hole is filled with the cutting surface I, and when the cutting depth of the ground becomes a predetermined depth or more, (Step 7)

On the other hand, as the wire saw 20 cuts the ground, the carcass filled in the second connection hole is moved to the first connection hole through the cut surface I as a path.

That is, by the bit 32, the water-absorbing material contained in the connection hole H is drawn in, so that the ordered material I is smoothly filled in the cut surface I.

Therefore, referring to FIG. 10, it is preferable to replenish the indicator in the second connection hole by the natural descending method by an amount insufficient.

In addition, the height of the car body material in the first connection hole is kept lower than that of the second connection hole, and the difference in height caused by the difference in height makes the movement of the order material smooth toward the first connection hole.

Then, the ground is cut to a depth to which the water wall is to be installed, thereby completing formation of the first water wall. (Step 8)

After the first water wall is completed, the third connection hole of the plurality of connection holes (H) is filled with the water supply material (Step 9), and the cradle (10a) in the first connection hole And the drawn cradle 10a is inserted into the third connection hole. (Step 10)

In addition, the casing provided in the third connection hole is pulled out (step 11), and the mount table 10b provided in the second connection hole is rotated 90 degrees in the direction of the third connection hole. (Step 12)

The cutting device 30 is provided between the second connection hole and the third connection hole to connect the wire saw 20 to the cutting device 30 and the sixth to eighth steps are repeatedly executed in order Thereby completing the remaining second, third, and fourth water walls.

step Work Contents Reference

One



Connecting copper hole
- A number of access holes are drilled in the expected section
- The connection hole should be drilled 0.5m ~ 1.5m deep

8
2
Charging the pneumatic protection material

- Charging of anti-collapse material (car) in the connection hole
- Preventing the collapse of the pneumatic wall by filling the car water into the connection hole.


13

3



Insert cradle

- Wiring a wire saw on both cradles
- Insert and seat in each connection hole with wire saw mounted

8 and
Figures 10 -
13

4

Casing pull

- Casing pullout in the first connection hole and the second connection hole
5

Wire saw and cutting device connection

- Drum is located at the bottom
- Mount the wire saw on the drum.


8

6

Begin cutting
- Cutting surface formation by rotating drum
- Gradually raise the drum to apply tensile force to the wire saw and cut the ground


8

7


Filler
- Deep depth of ground reduces the fill level
- The level of cargo material is always the same as the ground level


10
8

The first wall
installed
- Cut to the expected depth and finish filling
7 and
9

9

Charging car
- Charging the car in the 3rd connection hole
10

holder
Move installation

- Draw out the cradle in the first connection hole and install it in the third connection hole.

7
11

Casing pull
- Casing pull out from the third connecting hole
12

Mount rotation in the third connection hole
- turn the holder in the second connecting hole 90 ° to the third connecting hole

7
13

Connect wire saw and lifting device
- Repeatedly repeating the steps from step 5 to step 8, sequentially completing the second wall, the third wall and the fourth wall

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the same is by way of illustration and example only and is not to be construed as limiting the present invention. It is obvious that the modification or improvement is possible.

It is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

10: Cradle 11: First roller
12: second roller 12a: roller mounting block
13: third roller 14: gripper
14a: gripper pad 15: bracket
20: wire saw 21: wire rope
22: bit 23: connection bit
23-1: connecting rod 30: cutting device
31: drum 32: first driving part
33: chain 34: second driving part

Claims (8)

1. An underground continuous water wall installation apparatus using a wire saw,
Two spaced apart cradles that are inserted into the ground in the expected wall installation scheduled section;
A cutting device provided between the spaced apart rests;
A wire saw mounted on the spaced apart stand and the cutting device; , ≪ / RTI >
The cutting apparatus is provided with a rotating means for rotating the wire saw and a pulling means for moving the rotating means in a vertical direction and a downward direction to pull the wire saw to generate a tensile force, And a tensile force is generated at the same time to cut the ground to a planned depth,
Wherein an underground continuous water wall is formed in the gap between the ground and the cut so that there is no disconnected part.
The cutting tool according to claim 1,
The rotating means comprises a drum connected to the wire saw, and a first driving portion for rotating the drum,
Wherein the pulling means comprises a chain having the first driving unit and a second driving unit rotating the chain.
The method according to claim 1,
The holder is provided with an H-beam, and a plurality of rollers are formed so that the wire saw moves in a space between the flanges of the H beam,
The roller
A first roller formed on one end of the H beam and on which the wire saw is wound,
A third roller formed at the other end of the H beam to switch the traveling direction of the wire saw by 180 degrees,
And a second roller which is provided between the first roller and the third roller and is moved to one side and the other side between the flanges of the H beam and switches the traveling direction of the wire saw to 90 degrees. An underground continuous water wall installation device using.
The method according to claim 1,
And a gripper for fixing the cradle to the lower end of the cradle by pulling force of the wire saw,
Wherein the gripper includes a hydraulic cylinder provided in the gripper and a gripper pad protruding to the outside of the gripper by hydraulic pressure of the hydraulic cylinder.
The method of claim 1, wherein the wire-
And a plurality of connection bits for connecting the plurality of bits by a connecting rod so as to connect the cutting rods, the cutting rods, the cutting rods, the cutting rods,
Wherein the bit is disassembled and coupled by a bolt nut in a two-divided structure in the longitudinal direction.
A method of installing an underground continuous water wall using the underground continuous water wall installation apparatus according to any one of claims 1 to 7,
A first step of drilling a plurality of connection holes which are perforated holes at the edge of the predetermined wall installation scheduled section;
A second step of providing a casing in the plurality of connection holes and filling the first connection hole and the second connection hole among the plurality of connection holes with a carburst material;
A third step of inserting the cradle in which the wire saw is mounted on the first connection hole and the second connection hole;
A fourth step of pulling out the casing provided in the first connection hole and the second connection hole;
A fifth step of mounting the wire saw to the cutting device provided between the first connection hole and the second connection hole;
A sixth step of cutting the ground by operating the cutting device to form a cutting surface connecting the first connection hole and the second connection hole;
A seventh step of replenishing the filling material when the cutting insert filled in the first connection hole and the second connection hole is filled with the cutting surface in the second step and the cutting depth of the ground becomes a predetermined depth or more;
An eighth step of cutting the ground to a predetermined depth to form a first water wall; The method comprising the steps of: (a) inserting a wire saw into the underground continuous water wall using the wire saw;
7. The method of claim 6, further comprising, after the eighth step,
A ninth step of filling the third connection hole in the plurality of connection holes with a filler;
A tenth step of pulling out the cradle in the first connection hole and inserting the withdrawn cradle into the third connection hole;
An eleventh step of pulling out the casing provided in the third connection hole;
A twelfth step of rotating the cradle provided in the second connection hole by 90 degrees in the direction of the third connection hole;
Wherein the cutting device is provided between the second connection hole and the third connection hole to connect the wire saw to the cutting device and the steps 6 to 8 are sequentially repeated to complete the water- A method of installing underground continuous water wall using
The method according to claim 6,
Wherein the connection hole is drilled 0.5 to 1.5 m deeper than the predetermined wall installation depth.

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