KR101640241B1 - Pressure type grouting equipment for ground reinforcement and grouting method using that - Google Patents

Pressure type grouting equipment for ground reinforcement and grouting method using that Download PDF

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Publication number
KR101640241B1
KR101640241B1 KR1020150136959A KR20150136959A KR101640241B1 KR 101640241 B1 KR101640241 B1 KR 101640241B1 KR 1020150136959 A KR1020150136959 A KR 1020150136959A KR 20150136959 A KR20150136959 A KR 20150136959A KR 101640241 B1 KR101640241 B1 KR 101640241B1
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KR
South Korea
Prior art keywords
injection
pipe
perforation hole
tube
admixture
Prior art date
Application number
KR1020150136959A
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Korean (ko)
Inventor
유용선
서동수
한진규
Original Assignee
(주)케미우스코리아
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Priority to KR1020150136959A priority Critical patent/KR101640241B1/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02B—HYDRAULIC ENGINEERING
    • E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/20—Securing of slopes or inclines
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/02—Improving by compacting
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E02D3/123—Consolidating by placing solidifying or pore-filling substances in the soil and compacting the soil
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/003—Injection of material

Abstract

The present invention relates to a first injection pipe having a plurality of branch pipes for injecting at least one of an injection material and an admixture; A second injection pipe in which a coupling hole for inserting the first injection pipe is formed so that a plurality of flow paths are formed, and a supply pipe is provided to supply an injection material or an admixture to any one of the plurality of flow paths; A blocking portion for blocking or opening a gap between the ejection port of the second injection tube and the first injection tube; And a lifting portion for lifting the first injection tube and opening or closing the blocking portion.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a grouting apparatus for ground reinforcement and a grouting method using the same,

The present invention relates to a grouting apparatus for ground reinforcement and a grouting method using the same. More particularly, the present invention relates to a method for simultaneously injecting a cement mortar and a filler into a perforation hole, a cement mortar and a filler A method of mixing after cementing or mixing cement mortar with a filler is injected at the beginning of the construction and the cement mortar and complete material are mixed after the filling of the lower part of the perforation hole is completed, And a grouting method using the same.

In general, the most widely used soil nail method in Europe and USA with slope stability ball is the ground reinforcement method in order of perforation, nail installation, cement milk filling, shotcrete pouring, excavation.

In the construction by the soil nail method described above, the nail is inserted into the perforated hole of the ground, the cement milk is grouted into the perforation hole with no pressure, the wire mesh is installed on the wall surface, After placement, the reinforcing bars are pressed and fixed with a nail plate and nuts fastened to the nail, and the shotcrete is cast.

Meanwhile, in the soil nail method as described above, the grouting needs to completely fill the inside of the perforated hole. Since the grouting method adopts the gravity type grouting method, the curing time is long and the water / cement ratio (W / C? 45%) The shrinkage phenomenon occurs and repeated grouting is required about 3 to 6 times, and the workability is deteriorated.

In order to solve such a problem, the conventional grouting apparatus proposed in the related art has a gap and a position fixture which is inserted into an excavation hole of a ground and is formed into a predetermined cross-sectional shape and has a hollow portion at the center, A reinforcing member having a plurality of injection holes for injecting material injection holes formed therein, at least one reinforcing member fixedly installed on a side surface of the gap and the position fixture, and a sealing hose provided to check whether the filling material is filled in the excavation hole of the ground And the injection pipe used as a reinforcing material is composed of FRP pipe, steel pipe, PVC pipe, or carbon fiber pipe.

BACKGROUND ART [0002] The background art of the present invention is disclosed in Korean Patent Registration No. 10-0707188 (published on Apr. 13, 2007, entitled " Grounding Reinforcement for Ground Reinforcement and Construction Method).

Since the grouting apparatus according to the prior art does not change the flow path of the injection material supplied by a plurality of injection pipes, the injection material and the filler are mixed and injected at the beginning of the construction, and then the injection material and the complete material are mixed There is a problem that it is difficult to implement the construction method.

Therefore, there is a need for improvement.

The present invention relates to a method of simultaneously injecting cement mortar and a filler into a perforation hole, a method of mixing cement mortar and a filler after mixing the cement mortar and a filler, The present invention provides a grouting apparatus for reinforcing a ground and a grouting method using the grouting apparatus, which can selectively implement a construction method in which a cement mortar and a complete material are mixed and injected after the filling of the lower part of the perforation hole is completed.

The present invention relates to a first injection pipe having a plurality of branch pipes for injecting at least one of an injection material and an admixture; A second injection pipe in which a coupling hole for inserting the first injection pipe is formed so that a plurality of flow paths are formed, and a supply pipe is provided to supply an injection material or an admixture to any one of the plurality of flow paths; A blocking portion for blocking or opening a gap between the ejection port of the second injection tube and the first injection tube; And a lifting portion for lifting the first injection tube and opening or closing the blocking portion.

The branch pipe of the present invention further includes: a first branch pipe branching from the inlet of the first injection pipe to one side; And a second branch pipe branching from the inlet of the first injection pipe to the other side and communicating with the first branch pipe, wherein a connection portion between the first branch pipe and the second branch pipe is provided with a first branch pipe Or a valve unit for opening and closing the second branch pipe is provided.

The blocking portion may include a stepped portion formed by bending the second injection pipe so that a cross-sectional area of the second injection pipe at a discharge port side becomes narrower; And a finishing panel provided at a lower end of the first injection pipe to be seated on the stepped portion.

The elevating portion of the present invention may further include: a supporting surface provided at an inlet side of the second injection tube; A support panel provided on the first injection tube so as to be seated on the support surface; And a gap member interposed between the support surface and the support panel to surround the first injection tube.

Further, the elevating portion of the present invention is further characterized by a clip member for closely fixing the support panel and the support surface or the support panel to the gap member.

According to another aspect of the present invention, there is provided a method of manufacturing a pneumatic tire, comprising the steps of: (a) providing a filling pipe for supplying a working fluid to an expansion member by installing a perforation hole in a ground, Inserting an injection tube including an injection tube and a second injection tube into which the first injection tube is inserted into the perforation hole; (b) injecting a working fluid through the filling tube to expand the expansion member, then injecting the injection material through one of the plurality of branch pipes to the end of the perforation hole, Injecting the admixture along the supply pipe connected to the branch pipe to the end of the perforation hole to mix the injection material and the admixture at the end of the perforation hole and harden; (c) when the mixing of the filler and the admixture is completed, the injection of the filler and the admixture is stopped, and after the working fluid is discharged from the expansion member, the filling tube and the injection tube are raised to the set height of the perforation hole step; And (d) expanding the inflation member by injecting a working fluid through the filling pipe after raising the filling tube and the infusion tube to a set height of the perforation hole, Injecting the injection material through the engine to the end of the perforation hole and simultaneously injecting the admixture into the perforation hole along the feed pipe connected to the second injection pipe or the branch pipe to mix the injection material and the admixture in the perforation hole and cure And a control unit.

Also, in the step (a) of the present invention, an outer wall tube having a plurality of discharge hole portions for supporting the perforation holes is disposed in the perforation hole.

The grouting apparatus for ground reinforcement according to the present invention and the grouting method using the same are provided with a plurality of branch pipes in a first injection pipe and a valve unit for selectively opening and closing a plurality of branch pipes so that the cement mortar, And the opening and closing operation of the second injection pipe is controlled while the first injection pipe is raised and lowered, so that the cement mortar or the filler supplied through the first injection pipe is supplied through the second injection pipe It is possible to selectively mix and inject the complete material, thereby providing various grouting construction methods.

1 is a perspective view of a grouting apparatus for a ground reinforcement according to a first embodiment of the present invention.
2 is a cross-sectional view illustrating a grouting apparatus for a ground reinforcement according to a first embodiment of the present invention.
3 is an operational state diagram illustrating a grounding-for-grounding apparatus according to a first embodiment of the present invention.
4 is a process diagram showing a grouting method using a grouting apparatus for ground reinforcement according to a first embodiment of the present invention.
5 is a process diagram showing a grouting method using a grouting apparatus for ground reinforcement according to a second embodiment of the present invention.
6 is a cross-sectional view of the elevating portion of the ground reinforcement apparatus according to the third embodiment of the present invention.

Hereinafter, an embodiment of a grouting apparatus for a ground reinforcement according to the present invention and a grouting method using the same 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 terms 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.

FIG. 1 is a perspective view illustrating a ground reinforcement apparatus according to a first embodiment of the present invention, FIG. 2 is a sectional view showing a grouting apparatus for a ground reinforcement according to a first embodiment of the present invention, FIG. FIG. 4 is a process diagram illustrating a grouting method using a grouting apparatus for ground reinforcement according to a first embodiment of the present invention. FIG. 4 is a flowchart illustrating a grouting method using a grouting apparatus for ground reinforcement according to the first embodiment of the present invention.

Referring to FIGS. 1 to 4, a grouting apparatus for reinforcing a ground according to an embodiment of the present invention includes a first injection pipe (not shown) having a plurality of branch pipes 12 and 14 for injecting at least one of a filler and an admixture 10, a coupling hole 52 into which the first injection pipe 10 is inserted is formed to form a plurality of flow paths, and a supply pipe 54 is installed to supply the injection material or the admixture to any one of the plurality of flow paths A blocking section 56 for blocking or opening the gap between the ejection port 58 of the second injection tube 50 and the first injection tube 10 and a second injection tube 10 And a lift portion 70 for opening or closing the cut-off portion 56. As shown in Fig.

Since a plurality of branch pipes (12, 14) are connected to the first injection pipe (10), a plurality of injection materials or an admixture can be mixed and injected simultaneously.

Here, the admixture includes a filler or a complete material, and it is possible to inject the filler containing cement mortar and the inorganic filler or special admixture to the inner end of the perforation hole 7.

The cement mortar is hardened within a short time. Therefore, the cement mortar is injected along the first injection pipe (10) at the inner end of the perforation hole (7) at the beginning of the construction and the filler is injected along the second injection pipe The cement mortar and the filler are mixed with each other at the inner end of the perforation hole 7 and are hardened within a short time, so that a side effect can be generated at the end of the perforation hole 7.

When the cement mortar and the filler are mixed and cured at the inner end of the perforation hole 7, the filling pipe 5 and the injection pipes 10 and 50 are raised outside the perforation hole 7 by a set height, 10 is lowered so that the end of the first injection pipe 10 and the inner wall of the second injection pipe 50 are cut off to cut off the supply of the filler and the second branch pipe 14 The cement mortar and the complete material are mixed in the first injection pipe 10 and injected into the perforation hole 7.

The branch pipes 12 and 14 include a first branch pipe 12 branching from the inlet of the first injection pipe 10 to one side and a second branch pipe branched from the inlet of the first injection pipe 10 to the other side, And a second branch pipe (14) connected to the second branch pipe (12).

The cement mortar injected through the first branch pipe 12 and the complete material injected through the second branch pipe 14 are injected to the inner end of the perforation hole 7 while being mixed in the first injection pipe 10 .

Since the valve portion 30 for opening and closing the first branch pipe 12 or the second branch pipe 14 is provided at the connection portion between the first branch pipe 12 and the second branch pipe 14, The second branch pipe 14 can be closed by the operation of the valve unit 30. [

The valve unit 30 includes a rotating shaft 34 rotatably installed at a connecting portion between the first branch pipe 12 and the second branch pipe 14, A blocking block 32 for opening and closing the outlet of the first branch pipe 12 or the second branch pipe 14 in accordance with the direction of the first branch pipe 12 and the second branch pipe 14, And a lever member 36 mounted on a rotary shaft 34 extending to the lower end of the shaft.

When the worker rotates the lever member 36 to rotate the rotary shaft 34, the blocking block 32 is rotated toward the first branch pipe 12 or the second branch pipe 14, When the rotation is completed, the outlet of the first branch pipe (12) or the second branch pipe (14) is shut off.

Of course, the rotating shaft 34 may be provided with a separate driving device to remotely control the opening / closing operation of the first branch pipe 12 or the second branch pipe 14, So that detailed drawings and description of other embodiments will be omitted.

The blocking portion 56 includes a stepped portion 56a formed by bending the second injection tube 50 so that the sectional area of the second injection tube 50 on the side of the discharge port 58 is narrowed, And a finishing panel 56b provided at the lower end of the injection pipe 10.

When the first injection pipe 10 is lowered, the finishing panel 56b is seated on the upper surface of the step portion 56a and is formed between the outer wall of the first injection pipe 10 and the inner wall of the second injection pipe 50 When the first injection pipe 10 is lifted up, the dispenser passes through the discharge port 58 formed at the lower end of the second injection pipe 50 at a distance between the finish panel 56b and the stepped portion 56a, To the inner end of the perforation hole 7 through the through-hole.

The finishing panel 56b is supported on the inner wall of the second injection pipe 50 and has a plurality of supports for preventing the first injection pipe 10 from flowing when the first injection pipe 10 is raised and lowered, A gap is formed between the support rods so that the filler injected from the supply pipe 54 passes through the gap between the support rods.

The lift portion 70 includes a support surface 72 provided at an inlet side of the second injection pipe 50 and a support panel 74 provided at the first injection pipe 10 so as to be seated on the support surface 72. [ And a spacing member 76 interposed in an interval between the support surface 72 and the support panel 74.

Therefore, when the spacing member 76 is interposed between the support surface 72 and the support panel 74 after the first injection pipe 10 is raised by using a heavy equipment such as an operator or a crane, The first injection tube 10 is maintained in the raised state while being supported by the first injection tube 76.

The interval member 76 is formed with a long hole portion in the axial direction at a center portion so that the first injection pipe 10 is inserted therein and a coupling groove portion 76b is formed at one side of the circumferential surface to allow the first injection pipe 10 to pass therethrough, A fixing hole portion 76a through which the fastening member 74a is coupled through the support panel 74 is formed on the upper surface.

Therefore, when the first injection tube 10 is raised so as to form a gap between the support panel 74 and the support surface 72 and then the gap member 76 is inserted between the support panel 74 and the support surface 72 The first injection pipe 10 is maintained in the raised state from the second injection pipe 50.

The grouting method using the grouting apparatus for ground reinforcement according to an embodiment of the present invention will be described as follows.

The grouting method using the grouting apparatus for ground reinforcement according to the first embodiment of the present invention is characterized in that a grouting method using a grouting apparatus for installing a perforation hole 7 in a ground and a fill tube 5 for supplying a working fluid to the expansion member 3, The first injection tube 10 and the second injection tube 10 are inserted to the inner end of the perforation hole 7 through the first injection tube 10 and the plurality of branch tubes 12 and 14, (10, 50) made up of a plurality of branch pipes (50) into a perforation hole (7), and expanding the expansion member (3) by injecting a working fluid through a filling pipe (5) The filling material is injected to the end of the perforation hole 7 through one of the branch pipes 12 and 14 among the first and second injection pipes 12 and 14 and the feeding pipe 54 connected to the second injection pipe 50, Injecting to the end of the perforation hole 7 to cure the injection material and the filler at the end of the perforation hole 7 and curing the injection material and the filler, A step of stopping the injection of the filler and the filler and raising the filling tube 5 and the injection tubes 10 and 50 to a set height of the hole 7, And then the working fluid is injected through the filling pipe 5 to expand the expansion member 3 and then the injection material is pierced through one of the branch pipes 12 and 14 among the plurality of branch pipes 12 and 14 The filler is injected to the hole 7 and the filler is injected to the hole 7 along the feed pipe 54 connected to the second injection pipe 50 to mix the filler and the filler in the hole 7, A step of injecting the filler and the filler material repeatedly to mix and inject the filler and the filler to the outer side of the perforation hole 7, (50) and the outer wall of the first injection pipe (10), the injection of the filler is blocked by a blocking portion (56) for blocking the flow path formed in the gap between the inner wall of the first injection pipe Manifold by injecting (12, 14) along the finished material and one of the branch pipes (12, 14) during a step for feeding to the hole (7) with mixing and complete juipjae material.

A hole 7 is formed in the ground and the expansion member 3, the filling pipe 5 and the injection pipes 10 and 50 are inserted into the perforation hole 7 to the inside end of the hole 7.

At this time, according to the stability of the perforation hole 7, the above-described process can be performed in a state where a support pipe for supporting the inner wall of the perforation hole 7 is inserted. This can be easily changed by those skilled in the art, So that specific drawings and explanations will be omitted.

When the insertion of the expanding member 3 is completed, the working fluid is supplied along the filling pipe 5 to expand the expanding member 3, so that the space from the bottom surface of the expanding member 3 to the inner end of the perforation hole 7 Lt; / RTI >

When the space at the inner end of the perforation hole 7 is sealed as described above, the first injection pipe 10 is raised so that the filler, which is supplied through the supply pipe 54, flows through the outer wall of the first injection pipe 10, The flow path is opened so as to be inserted into the inner end of the perforation hole 7 through the flow path formed between the inner walls of the pipe 50 and the cement mortar is injected through the first branch pipe 12 and the first injection pipe 10 And at the same time, the filler is injected through the supply pipe 54 and the second injection pipe 50.

Therefore, the reinforcing structure is formed in a short time at the inner end of the perforation hole 7 at the initial stage of the construction while the cement mortar and the filler are mixed at the inner end of the perforation hole 7.

When the injection of the cement mortar and the filler is completed, the operator lifts the filling pipe 5 and the injection pipes 10 and 50 to a predetermined height after discharging the working fluid from the expansion member 3, So that the finishing panel 56b is seated on the upper surface of the stepped portion 56a to block the flow path through which the filler material is injected and rotate the lever member 36 to open the second branch pipe 14.

Therefore, the cement mortar supplied through the first branch pipe 12 and the complete material supplied through the second branch pipe 14 are supplied to the inside of the perforation hole 7 while being mixed in the first injection pipe 10.

As described above, the filling pipe 5 and the injection pipes 10 and 50 are raised step by step while repeating the supply of the cement mortar and the complete material, thereby completing the grouting of the ground in which the perforation hole 7 is installed.

5 is a process diagram showing a grouting method using a grouting apparatus for ground reinforcement according to a second embodiment of the present invention.

5, the grouting method using the grouting apparatus for ground reinforcement according to the second embodiment of the present invention is different from the first embodiment in that the first injection pipe 10 and the second injection pipe 50 are perforated The outer wall tube 8 is inserted into the perforation hole 7 before insertion into the hole 7 to prevent the perforation hole 7 from collapsing during the grouting process.

The installation of the outer wall tube 8 can be inserted into the perforation hole 7 simultaneously with the step of installing the perforation hole 7 and when the device for installing the perforation hole 7 is discharged to the outside of the perforation hole 7 The outer wall tube 8 can be left in the perforation hole 7 to provide the perforation hole 7 provided with the outer wall tube 8. [

Since a plurality of discharge hole portions 8a are formed on the circumferential surface of the outer wall tube 8, the injection material, the filler material or the complete material supplied along the first injection pipe 10 or the second injection pipe 50, So that the grouting process can be performed.

6 is a cross-sectional view of the elevating portion of the ground reinforcement apparatus according to the third embodiment of the present invention.

6, the elevating portion 70 of the grouting apparatus for ground reinforcement according to the third embodiment of the present invention includes a support surface 72 provided at the entrance side of the second injection pipe 50, A support panel 74 provided in the first injection pipe 10 so as to be seated on the support panel 72 and a spacing member 76 interposed in the gap between the support surface 72 and the support panel 74, And a clip member (78) for closely connecting the support surface or the support panel with the spacing member.

In the present embodiment, the engagement groove portion 72a into which the lower end of the clip member 78 is inserted is formed in the lower portion of the support surface 72, and the engagement groove portion 76c is formed on the peripheral surface of the spacer 76 The clip member 78 is installed so as to be sandwiched between the upper surface of the support panel 74 and the engagement groove portion 76c in a state in which the support panel 74 is seated on the support surface 72, The first injection pipe 10 can be held in the lowered state or the raised state by being fitted between the upper surface of the support panel 74 and the engaging groove 76c.

The clip member 78 is formed in a ring shape that surrounds the connection portion between the support panel 74 and the support surface 72 or between the support panel 74 and the spacing member 76, (74) is inserted.

When the support panel 74 is seated on the support surface 72, the clip member 78 is inserted into the upper surface of the support panel 72 and the engagement groove 72a to fix the support panel 74, , It is inserted into and fixed to the upper surface of the support panel 74 and the engagement groove 76c.

As a result, it is possible to provide a method of simultaneously injecting cement mortar and a filler into a perforation hole, a method of mixing cement mortar and a filler after mixing the cement mortar and a filler, And a grouting method using the same, which can selectively implement a construction method in which a cement mortar and a complete material are mixed and injected after the filling of the lower part of the perforation hole is completed, can be provided.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

The grouting device for ground reinforcement and the grouting method using the grouting device are exemplified. However, the grouting device for ground reinforcement and the grouting method using the grouting device using the grouting device and the grouting method using the same, Can be used.

Accordingly, the true scope of the present invention should be determined by the following claims.

10: first injection pipe 10a: drive pipe
12: 1st branch 14: 2nd branch
30: valve portion 32: blocking panel
34: rotating shaft 36: lever member
50: second injection pipe 52:
54: supply pipe 56:
56a: stepped portion 56b: finish panel
58: Discharge port 70:
72: Support surface 72a:
74: support panel 74a: fastening member
76: spacing member 76a: fixed-
76b: insertion groove portion 76c: engagement groove portion
80: driving part 82:
84: nut member 86: motor
88: main gear

Claims (7)

A first injection pipe having a plurality of branch pipes for injecting at least one of an injection material and an admixture;
A second injection pipe in which a coupling hole for inserting the first injection pipe is formed so that a plurality of flow paths are formed, and a supply pipe is provided to supply an injection material or an admixture to any one of the plurality of flow paths;
A blocking portion for blocking or opening a gap between the ejection port of the second injection tube and the first injection tube; And
And a lifting portion for lifting the first injection tube and opening or closing the blocking portion,
The elevating unit includes:
A supporting surface provided at an inlet side of the second injection tube;
A support panel provided on the first injection tube so as to be seated on the support surface; And
And a gap member interposed between the support surface and the support panel to surround the first injection pipe.
The apparatus according to claim 1,
A first branch pipe branching from the inlet of the first injection pipe to one side; And
And a second branch pipe branching from the inlet of the first injection pipe to the other side and communicating with the first branch pipe,
Wherein a valve portion for opening and closing the first branch pipe or the second branch pipe is provided at a connecting portion between the first branch pipe and the second branch pipe. The apparatus according to claim 1,
A stepped portion formed by bending the second injection pipe so that a cross-sectional area of the second injection pipe at a discharge port side becomes narrower; And
And a finishing panel provided at a lower end of the first injection pipe so as to be seated on the stepped portion.
delete The method according to claim 1,
Wherein the elevating portion further comprises a clip member for fixing the support panel and the support surface or the support panel and the spacing member in close contact with each other.
(a) a filling pipe for installing a perforation hole in the ground and supplying a working fluid to the expansion member, and a first injection pipe inserted through the expansion member to an inner end of the perforation hole and having a plurality of branch pipes, Inserting an injection tube made of a second injection tube into which the injection tube is inserted into the perforation hole;
(b) injecting a working fluid through the filling tube to expand the expansion member, then injecting the injection material through one of the plurality of branch pipes to the end of the perforation hole, Injecting the admixture along the supply pipe connected to the branch pipe to the end of the perforation hole to mix the injection material and the admixture at the end of the perforation hole and harden;
(c) when the mixing of the filler and the admixture is completed, the injection of the filler and the admixture is stopped, and after the working fluid is discharged from the expansion member, the filling tube and the injection tube are raised to the set height of the perforation hole step; And
(d) expanding the expansion member by injecting a working fluid through the filling pipe after raising the filling tube and the injection tube to a set height of the perforation hole, Injecting the injection material to the end of the perforation hole and simultaneously injecting the admixture into the perforation hole along the feed pipe connected to the second injection pipe or the branch pipe to mix the injection material and the admixture in the perforation hole and cure Including,
The step (c)
A supporting surface provided at an inlet side of the second injection tube;
A support panel provided on the first injection tube so as to be seated on the support surface; And
And a spacing member interposed between the support surface and the support panel so as to surround the first injection pipe. The grouting method using the grouting apparatus according to claim 1,
The method according to claim 6,
Wherein the step (a) is performed while an outer wall tube having a plurality of discharge holes formed therein to support the perforation hole is disposed in the perforation hole.
KR1020150136959A 2015-09-25 2015-09-25 Pressure type grouting equipment for ground reinforcement and grouting method using that KR101640241B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102206297B1 (en) * 2020-07-10 2021-01-22 주식회사 지에스이 Method for constructing a ground using top-bit and vibration packer employing a impact apparatus
USRE48610E1 (en) * 2016-03-28 2021-06-29 Polymer Technologies Worldwide, Inc. System and method of stabilizing soil

Citations (4)

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