KR20040063507A - Underground wall grouting device and the underground wall construction method using the same - Google Patents

Abstract

PURPOSE: A grouting device of an underground wall and a construction method of the underground wall thereof are provided to have the excellent construction quality, to increase the safety, to reduce the construction cost and the construction time, and to maximize the utilization rate of land. CONSTITUTION: A bored pile type stiff member(100) is installed under the ground(1) and the inside thereof is empty. A supply pipe(200) is fixed by forming through the one side of the bored pile type stiff member. An injection pipe(220) of ground reinforcing agent is inserted in the supply pipe. The lower end of the supply pipe is closed. Many outlets are formed in the side of the supply pipe. The construction quality and the safety are increased by constructing the bored pile type stiff member and the supply pipe simultaneously.

Description

Underground wall grouting device and the underground wall construction method using the same}

The underground wall grouting apparatus of the present invention and the underground wall construction method using the same by constructing a feed pipe for supplying a ground stiffness and a ground reinforcement liquid for the formation of the underground wall at the same time, the construction quality is excellent, the stability is high, and the air The present invention relates to an underground wall grouting apparatus capable of shortening and saving construction costs, and a method for constructing an underground wall using the same.

In the conventional earthwork, the CIP (Cast In Placed Pipe) method, which is mainly performed among the various methods carried out for the formation of the underground wall, is a kind of cast-in-place casting pile to form the wall of the soil, and has a predetermined diameter. After drilling the ground so as to assemble the reinforcing bar, insert the mortar injection pipe to fill the gravel and then inject the mortar to form the underground wall, the heat-stiff rigid body performs the role of the underground wall appropriately for the construction purpose It has the advantage of high stability and low peripheral settlement, but has the problem that there is a possibility of leakage phenomenon in the connection between the ball and the ball.

In the conventional earthwork, LW (Labiles Wasser glass) method, which is carried out in various places such as the back of the earth and the lower part of the foundation as a ground reinforcement concept, mixes a gel of a cement suspension and a water-glass solution, and then gels it. , The method of reinforcing the ground by injecting the mixture into the ground using a manjet tube, etc., has a liquid injection effect on the ground crack, an exponential effect on the large leakage gap, and realizes the exponential effect and strength at the same time It has high solidity strength, low construction cost compared to other methods, and it is possible to inject a certain amount of ground reinforcement liquid uniformly in a predetermined position, so there is a certain injection effect. It has the advantage that it can be easily re-injected into the place deemed necessary after injection, but the air is long, and the LW method alone is a self-supporting soil. To serve as the foundation has a problem that follow the crowd.

In addition, in the conventional earthworks, in order to perform both the wall and ground reinforcement in one construction, after the construction for the wall to form the wall, after performing a separate ground reinforcement process, the air becomes longer, the aerosol also increases In addition, there is a problem in that the construction is not easy because the ground drilling process for the ground reinforcement work after the earth wall construction.

Therefore, the underground wall grouting device of the present invention and the underground wall construction method using the same solve the above problems, and by performing the earthquake foundation work and ground reinforcement of earthworks at the same time, the construction quality is excellent, the stability is high, and it saves the cost and air. An object of the present invention is to provide a ground wall grouting apparatus and a method of constructing a ground wall using the same.

In addition, the ground wall grouting device and the construction method of the ground wall using the same according to the present invention can reduce the environmental pollution by the use of less ground reinforcement solution than conventional LW method, reducing the environmental pollution, Since the supply pipes are constructed at the same time, there is another purpose to provide underground wall grouting device and underground wall construction method using the same which can be constructed even in a narrow place to maximize the land use rate.

1A and 1B are perspective views of the underground wall grouting apparatus of the present invention.

Figure 2a and Figure 2c is a side view briefly showing an embodiment of the construction method of the underground wall construction method using the underground wall grouting apparatus of the present invention in the order of the construction process.

Figure 3 is a plan view of an embodiment of the construction method of the underground wall using the underground wall grouting apparatus of the present invention.

<Description of Major Codes in Drawings>

1: underground 10: underground wall grouting device

100: columnar rigid 110: cement mortar and gravel

120: spacer 200: supply pipe

210: discharge port 211: discharge pipe

220: injection pipe 221: ground reinforcement liquid (not shown)

230: tamper proof tape

Referring to the ground wall grouting apparatus 10 and the construction method of the underground wall using the same according to the drawings, Figures 1a and 1b is a perspective view of the underground wall grouting apparatus 10 of the present invention, Figures 2a and 2c FIG. 3 is a side view briefly showing an embodiment of the construction method of the underground wall construction method using the underground wall grouting apparatus 10 of the present invention, and FIG. 3 is a construction method of the underground wall construction method using the underground wall grouting apparatus 10 of the present invention. Example plan view.

As shown in Figure 1a, the present invention, the underground wall grouting device 10 is a columnar rigid body 100 is installed inside the ground (1); And a tube that is formed and fixed along an outer side of the columnar rigid body 100, and a ground reinforcement liquid 221 (not shown) is injected into the tube 220, and the lower end thereof is closed. It includes; a supply pipe 200 is formed with a plurality of outlets 210 toward the ground. At this time, as shown in Figure 1b, the outlet 210 of the supply pipe 200 of the ground wall grouting apparatus 10 of the present invention may be further formed with a discharge pipe 211 protruding toward the ground (1), Formation of the discharge pipe 211 of the supply pipe 200 may be selected and constructed according to the construction site situation.

In addition, as shown in Figures 1a and 3, in the underground wall grouting apparatus 10 of the present invention, the columnar rigid body 100 that forms the underground wall is the columnar rigid body 100 as will be described later In the cement mortar and gravel 110, the interior is empty to enable, it is preferable to use a reinforcing bar, etc., having a predetermined rigidity to withstand earth pressure after construction, and can serve as a underground wall, in addition to the above As long as it can play the role as an underground wall as mentioned above, any may be sufficient. In addition, as shown in Figures 1 and 3, the outer other side of the columnar rigid body 100, a plurality of spacers 120 are further formed at regular intervals in the longitudinal direction, the columnar rigid body Reinforce the rigidity of (100), and ensures a proper distance between the ground wall grouting device 10 and the ground during construction.

In addition, as shown in Figures 1a and 3, in the ground wall grouting apparatus 10 of the present invention, the supply pipe 200 for injecting the ground reinforcement liquid has a length along the outer side of the columnar rigid body 100 It is formed in the direction, the tube is fixed to the columnar rigid body 100, the tube can be used as a manjet tube (manjet tube), PVC pipes and steel pipes, even if used in accordance with the double construction site situation It's okay.

In addition, the lower end of the supply pipe 200 is sealed with a wooden stopper is bent with a tamper-proof tape 230, a plurality of outlets 210 are formed on the side of the supply pipe 200 toward the ground. At this time, the discharge port 210 of the supply pipe 200 may be further formed with a discharge pipe 211 protruding toward the ground (1) as described above, the discharge pipe 211 may be used such as a strainer In addition, as long as it can be formed in the supply pipe 200, and can be injected later into the ground (1), ground reinforcement liquid 221 (not shown) as described below. In addition, as shown in the figure, the damage preventing tape 230 is wound around the outlet 210 of the supply pipe 200 to prevent damage of the outlet 210 of the supply pipe 200. In addition, even when the discharge pipe 211 is further formed in the discharge port 210 of the supply pipe 200, the tape for preventing damage 230 around the joint of the supply pipe 200 and the discharge pipe 211 By winding, damage of the discharge pipe 211 is prevented. At this time, as shown in Figures 2a and 2c, the anti-tamper tape 230 is wound around the discharge pipe 211, the upper and lower ends of the anti-tamper tape 230 has a predetermined thickness in multiple layers so as to protrude The discharge pipe 211 is protected by winding.

In addition, as shown in Figure 2c, the injection pipe 220 for the injection of the ground reinforcement liquid 221 (not shown) is inserted into the supply pipe 200, the ground reinforcement liquid 221 (not shown) in the ground (1) Enable injection). In this case, the injection pipe 220 may be an injection pipe equipped with a packer (packer) used in the existing LW method, and can be inserted into the supply pipe 200, and the ground reinforcement liquid 221 is not displayed. Can be injected as long as it can be injected. In addition, the ground reinforcement liquid 221 (not shown) is injected with a mixture of a water-glass solution and a cement suspension used in the existing LW method. In addition, as shown in the figure, the supply pipe 200 of the underground wall grouting apparatus 10 of the present invention is installed in a straight line with the columnar rigid body 100, so that the ground reinforcement liquid 221 (not shown) To facilitate the injection.

In addition, when the construction of the underground wall grouting apparatus 10 of the present invention, as shown in Figure 3, the column-type rigid body 100 is toward the inner side where the building is constructed later, the supply pipe 200 is the ground is formed It is arranged to be located so as to be located between the ball and the ball of the plurality of the columnar rigid body 100 arranged in series in the ground as described later, as will be described later underground (1).

The underground wall construction method using the underground wall grouting apparatus 10 of the present invention comprises the steps of: arranging a plurality of the underground wall grouting apparatuses 10 in a row in the ground after drilling the ground; Placing cement mortar and gravel (110) on the main thermal rigid body (100) of the underground wall grouting device (10) except for the supply pipe (200) of the underground wall grouting device (10); And inserting the ground reinforcement liquid 221 (not shown) into the supply pipe 200 of the supply pipe 200 of the underground wall grouting apparatus 10, and then injecting the ground reinforcement liquid 221 (not shown). A detailed embodiment of the construction method of the underground wall using the underground wall grouting apparatus 10 of the present invention is as follows. In this case, the supply pipe 200 of the underground wall grouting apparatus 10 is a manjet tube, and the discharge pipe 211 is further formed at the discharge port 210 of the supply pipe 200, and the supply pipe 200 is provided. The injection tube 220 is inserted into the description will be described on the basis that the packer (packer) is installed.

As shown in Figure 2a, after the ground is drilled to a certain size according to the construction purpose, a plurality of the ground wall grouting apparatus 10 is arranged in a row in a row. At this time, the underground wall grouting device 10 as shown in Figure 3, the main heating rigid body 100 is toward the inner side where the building is constructed later, the supply pipe 200 of the underground wall grouting device 10 The ground wall is positioned so as to face the ground (1) where the ground is formed, and the supply pipe 200 is disposed so as to be positioned between the balls and the balls of the main heating rigid body 100 continuously arranged in a row. Prevents leaks that may occur between the ball and the grouting device 10. In this case, as shown in the figure, the discharge pipe 211 formed in the supply pipe 200 is also disposed to face the ground (1), the ground of the ground reinforcement liquid 211 (not shown) that is injected later ( 1) Facilitate injection

In addition, when the ground wall grouting device 10 is located on the ground, the spacer 120 formed in the columnar rigid body 100 of the ground wall grouting device 10 may be properly aligned with the ground during construction. It secures the gap and facilitates construction.

2B, cement mortar and gravel 110 are applied to the main heating rigid body 100 of the underground wall grouting device 10 except the supply pipe 200 of the underground wall grouting device 10. It is poured to form underground walls.

As shown in FIG. 2C, after the cement mortar and the gravel 110 are poured into the main heating rigid body 100 of the ground wall grouting device 10, the ground wall grouting device after a predetermined time has elapsed ( The injection pipe 220 of the ground reinforcement liquid 221 (not shown) is inserted into the supply pipe 200 of 10), and the ground reinforcement liquid 221 (not shown) is injected. At this time, the ground reinforcement liquid 221 (not shown) is a mixture of water-glass and cement suspension used in the existing LW method, the injection pipe 220 is inserted into the supply pipe 200 Multi shot is injected through the 1.5 shot. Thereafter, the underground wall grouting device 10 is constructed and finished as described above to form the underground wall.

The underground wall grouting device and the underground wall construction method using the same of the present invention are excellent in construction quality and stability by constructing the feed pipe for supplying the reinforcing liquid and the reinforcing body of the main heating type for the formation of the underground wall at the time of the earthquake foundation construction. It is high, it is effective to provide an underground wall grouting device and a method for constructing an underground wall using the same, which can shorten the air and save construction cost.

In addition, the underground wall grouting device of the present invention and the underground wall construction method using the same are constructed at the same time as the construction of the main heat-stiff rigid body and the supply pipe, it is possible to construct in a narrow ground perforation space to maximize the land utilization rate, Since the thermal rigid body and the supply pipe are constructed at the same time, it is possible to reduce the environmental pollution due to the earthquake foundation work even with the injection amount of the ground reinforcement liquid less than the existing LW method, and the supply pipe is fixed to the main heating type rigid body Since it is constructed vertically together with the rigid body, there is another effect to provide an underground wall grouting device which is easy to inject the ground reinforcement liquid and an underground wall construction method using the same.

In addition, the underground wall grouting apparatus of the present invention and the underground wall construction method using the same are disposed by placing the supply pipe fixed to the rigid rigid body of the main column type to be positioned between the ball and the ball of the main column type rigid body which is continuously arranged in a row. By doing so, there is another effect to provide an underground wall grouting device and a construction method for underground wall using the same, which can prevent the leakage phenomenon of the connection between the ball and the ball concerned in the conventional CIP method.

Claims (7)

A hollow columnar rigid body installed inside the ground; And A pipe that is formed and fixed along an outer side of the columnar rigid body, wherein a ground reinforcement liquid injection tube is inserted therein, a lower end is closed, and a side of the supply pipe has a plurality of outlets directed toward the ground; Underground wall grouting device comprising a. The ground wall grouting apparatus of claim 1, wherein the supply pipe is any one of a manjet tube, a PVC pipe, and a steel pipe. The ground wall grouting apparatus of claim 1, wherein a discharge pipe protruding toward the ground is further formed at the discharge port on the side of the supply pipe. The ground wall grouting apparatus of claim 1, wherein a tamper-proof tape is wound around the outlet of the supply pipe. The ground wall grouting apparatus of claim 1, wherein a plurality of spacers are further formed on the outer other side of the columnar rigid body at regular intervals in a longitudinal direction. After perforating the ground, arranging the plurality of underground wall grouting devices of claim 1 in a row in the ground; Placing cement mortar and gravel on the main thermal rigid body of the underground wall grouting apparatus except for the supply pipe of the underground wall grouting apparatus; And Inserting a ground reinforcement liquid injection tube into a supply pipe of the ground wall grouting apparatus, and then injecting the ground reinforcement liquid; Underground wall construction method using a ground wall grouting device comprising a. 7. The construction of the underground wall grouting apparatus using the underground wall grouting apparatus according to claim 6, wherein the supply pipe of the underground wall grouting apparatus faces the ground and is disposed between the balls and the balls of the underground wall grouting apparatus arranged in series. Way.