KR101203316B1 - The pressure type grouting equipment for groundreinforcement, and a method of construction - Google Patents

The pressure type grouting equipment for groundreinforcement, and a method of construction Download PDF

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KR101203316B1
KR101203316B1 KR1020120012473A KR20120012473A KR101203316B1 KR 101203316 B1 KR101203316 B1 KR 101203316B1 KR 1020120012473 A KR1020120012473 A KR 1020120012473A KR 20120012473 A KR20120012473 A KR 20120012473A KR 101203316 B1 KR101203316 B1 KR 101203316B1
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South Korea
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packer
prevention member
backflow prevention
pocket
grout material
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KR1020120012473A
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Korean (ko)
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이봉희
이항열
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(주)국제지오컨설팅
이항열
이봉희
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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
    • 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
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/62—Compacting the soil at the footing or in or along a casing by forcing cement or like material through tubes
    • 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

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)

Abstract

PURPOSE: A pressure type grouting device with a backflow prevention member and a grouting method using the same are provided to effectively prevent a grout material injected through a packer from flowing backward by completely cutting off the gap between the inlet of a bored portion and the outer surface of the packer. CONSTITUTION: A pressure type grouting device(A) with a backflow prevention member comprises a backflow prevention member(20), a solidifier injection pipe(28), and an air exhaust pipe(29). The backflow prevention member is formed on the outer surface of the rear end of a packer(10) in a pocket shape. The solidifier injection pipe injects a solidifier(C) into the backflow prevention member. The air exhaust pipe exhausts air from the backflow prevention member to the outside.

Description

역류방지부재가 구비된 가압식 그라우팅 장치 및 이를 이용한 그라우팅 공법 {The pressure type grouting equipment for groundreinforcement, and a method of construction}Pressurized grouting device with backflow preventing member and grouting method using the same {The pressure type grouting equipment for groundreinforcement, and a method of construction}

본 발명은 역류방지부재가 구비된 가압식 그라우팅 장치 및 이를 이용한 그라우팅 공법에 관한 것으로, 더욱 구체적으로는 사면 및 지반을 보강하기 위해 천공된 천공부 입구 벽면과 팩커 외부면간의 간극을 완벽하게 차단할 수 있도록 한 수단으로 팩커를 통해 주입되는 그라우트재가 역류되는 것을 효과적으로 방지할 수 있도록 한 역류방지부재가 구비된 가압식 그라우팅 장치 및 이를 이용한 그라우팅 공법에 관한 것이다.
The present invention relates to a pressurized grouting device equipped with a backflow preventing member and a grouting method using the same, and more particularly, to completely block the gap between the perforated wall of the perforated hole and the outer surface of the packer to reinforce the slope and the ground. The present invention relates to a pressurized grouting device equipped with a backflow preventing member capable of effectively preventing backflow of a grout material injected through a packer by one means, and a grouting method using the same.

일반적으로 소일 네일링(Soil Nailing) 공법은 NATM(New Austrian Tunnel ling Method)과 동일한 개념의 원위치 지반 보강공법으로 철도 및 도로인접 사면보강, 지하구조물 또는 고층빌딩의 기초를 위한 굴착지의 보강공정 등으로 사용되어 왔다.
In general, the Soil Nailing method is an in situ reinforcement method of the same concept as the NATM (New Austrian Tunnel ling Method), which is used to reinforce excavation sites for rail and road adjacent slope reinforcement, underground structures or foundations of high-rise buildings. Has been used.

이 공법은 붕괴 위험이 큰 자연사면이나 굴착에 의한 인공사면의 안정성을 확보하기 위한 공법으로 상부지반으로부터 내려오면서 지반이 완전히 이완되기 전에 Nail(철근 보강재)과 전면판을 설치하여 지반의 전단 및 인장강도를 증가시킴으로써, 사면의 안정성을 확보하여 보강된 원지반이 중력식 옹벽과 같이 적용하도록 하는 원리로서 최근에 다양하게 많이 이용되고 있다.
This method is designed to secure the stability of natural slopes or excavated artificial slopes with high risk of collapse, and it comes down from the upper ground and install nail (reinforcement reinforcement) and front plate before the ground is completely relaxed. Increasing the strength, it has been widely used in recent years as a principle to ensure the stability of the slope so that the reinforced base is applied like a gravity retaining wall.

그러나 상기와 공법에서는 사면 및 지반을 보강하기 위해 천공된 천공부에 압력식 그라우팅 장치의 팩커를 삽입한 다음 팩커에 그라우트재를 주입하게 될 때 천공된 천공부의 입구 벽체에 형성된 틈새를 통해 그라우트재가 역류되어 보강기능이 떨어질 염려가 있었다.
However, in the above method and when the grout material is inserted into the perforated perforations in the perforated perforations to reinforce the slopes and the ground, and then grout material is injected into the packers, the grout material is formed through the gap formed in the inlet wall of the perforated perforations. There was a risk that the reinforcement function would fall due to backflow.

이를 감안하여 특허 제10-0638548호 개시된 배수 겸용 가압 그라우팅 장치와 이를 이용한 상향식 사면및 지반보강공법에서는 수평 또는 상향으로 소정의 각도 이상으로 하여 천공하여 일정한 직경의 천공홀에 그라우팅 장치를 천공홀에 삽입한 다음 상기 천공홀에 삽입된 그라우팅 장치의 주입구 부분을 그라우트재로 코킹하도록 하여 주입구 부분으로 그라우트재가 역류되는 것을 방지하도록 하고 있다.
In view of this, the dual-pressure pressurized grouting device disclosed in Korean Patent No. 10-0638548 and a bottom slope and ground reinforcement method using the same are drilled horizontally or upwards by a predetermined angle or more, and the grouting device is inserted into the drilled hole of a constant diameter. Then, the inlet portion of the grouting device inserted into the drilling hole is caulked with the grout material to prevent the grout material from flowing back to the inlet portion.

그러나 상기 선행기술에서는 그라우팅 장치의 주입구 부분을 그라우트재로 코킹하게 될 때 코킹되는 그라우트재가 한정된 범위내에 코킹되지 않고 외부로 흘러내지러나 안쪽으로 밀려나게 되어 코킹의 어려움이 있을 뿐만 아니라 주입구 벽면에 밀착되지 않고 틈새가 발생하여 완전한 역류방지가 되지 않을 뿐만 아니라 코킹된 그라우트재가 양생되어 견고하게 굳어지는 시간 동안 그라우팅 작업을 할 수 없는 문제점이 있었다.
However, in the prior art, when the inlet portion of the grouting device is caulked with the grout material, the grouted material that is caulked is not caulked in a limited range, but flows outwards or is pushed inwards, so that the caulking is difficult and not closely adhered to the inlet wall. There was a problem that the grouting work was not possible during the time that the cracking occurred and not completely prevented backflow, as well as the hardened and hardened coking grout material.

본 발명은 이러한 문제점을 해결하기 위하여 안출한 것으로, 중공관체로 이루진 팩커의 외주면에 다수의 통공이 형성되고 일측의 그라우트재 주입관을 통해 그라우트재가 주입될 수 있도록 한 가압식 그라우팅 장치로 이루어지되 상기 팩커의 후단부에 포켓형으로 된 역류방지부재가 구비되어 사면 및 지반을 보강하기 위해 천공된 천공부에 압력식 그라우팅 장치를 삽입한 다음 역류방지부재 내에 고결제를 투입하여 천공부의 입구 벽면과 팩커 외부면간의 간극을 완벽하게 차단할 수 있도록 한 수단으로 팩커를 통해 주입되는 그라우트재가 역류되는 것을 효과적으로 방지할 수 있도록 한 역류방지부재가 구비된 가압식 그라우팅 장치 및 이를 이용한 그라우팅 공법을 제공함에 있다.
The present invention has been made to solve this problem, a plurality of through-holes are formed on the outer peripheral surface of the packer made of a hollow tube made of a pressurized grouting device so that the grout material can be injected through the grout material injection pipe of the side A pocket-type backflow prevention member is provided at the rear end of the packer.In order to reinforce the slope and the ground, a pressure grouting device is inserted into the perforated perforation, and a high binder is introduced into the backflow prevention member to inject the wall and the packer of the perforation part. The present invention provides a pressurized grouting device having a backflow preventing member and a grouting method using the same to effectively prevent a backflow of the grout material injected through the packer as a means to completely block the gap between the outer surfaces.

본 발명은 중공관체로 이루진 팩커(10)의 외주면에 다수의 통공(12)이 형성되고 일측의 그라우트재 주입관(14)을 통해 그라우트재가 주입될 수 있도록 한 가압식 그라우팅 장치와, 상기 팩커(10)의 후단부 외주면에 구비되어 있는 포켓형으로 된 역류방지부재(20)가 구비된 것에 있어서, 상기 역류방지부재(20)는;
상기 팩커(10)의 후단부 외주면에 용접 결합되게 철판 재질로 이루어지되 중공부(22a)가 형성되어 양측으로 배치되는 한 쌍의 지지판재(22)(22')와, 상기 지지판재(22)(22') 사이의 내측단 및 외측단에 접착되어 내부에 포켓부(26)가 형성되도록 하는 포지(24)와, 상기 포켓부(26)와 연통되고, 상기 한 쌍의 지지판재(22) 사이의 한정된 공간에서 역류방지부재(20)의 내부에 고결제가 주입될 수 있도록 하는 고결제 주입관(28)과, 상기 지지판재(22)에 포켓부(26)와 연통되어, 역류방지부재(20) 내부에 고결제가 주입될 때 역류방지부재(20) 내부의 공기가 외부로 배출되도록 하는 공기배출관(29)을 포함하는 구성으로 됨을 특징으로 한다.
The present invention provides a pressurized grouting device and a packer (10) formed on the outer circumferential surface of the packer (10) formed of a hollow tube and allowing grout material to be injected through one side of the grout material injection pipe (14). 10 is provided with a pocket-type backflow prevention member (20) provided on the outer peripheral surface of the rear end, the backflow prevention member (20);
A pair of support plate members 22 and 22 'made of an iron plate material to be welded to the outer peripheral surface of the rear end of the packer 10 and formed in both sides thereof so that the hollow portion 22a is formed, and the support plate member 22 is formed. A forge 24 which is bonded to the inner end and the outer end between the ends 22 'so that the pocket part 26 is formed therein, and communicates with the pocket part 26, and the pair of supporting plate materials 22 High-purity injection tube 28 to allow the injection of the high settlement in the interior of the non-return member 20 in a limited space therebetween, and communicates with the pocket portion 26 in the support plate 22, the backflow prevention member (20) It is characterized in that it comprises a configuration including an air discharge pipe 29 for discharging the air inside the backflow prevention member 20 to the outside when a high binder is injected into the inside.

삭제delete

상기 지지판재는 천공부의 직경보다 작은 외주면으로 형성되고, 상기 포켓부의 포지는 신축성을 갖는 재질로 구비된 것을 특징으로 한다.
The support plate is formed of an outer circumferential surface smaller than the diameter of the perforated portion, the forge of the pocket portion is characterized in that it is provided with a material having elasticity.

또한, 본 발명은 사면 또는 수평으로 된 지반에 천공하여 일정한 직경의 천공부를 형성하는 단계와; 중공관체로 이루진 팩커의 외주면에 다수의 통공이 형성되고 팩커의 후단부에 포켓부가 형성된 역류방지부재가 구비되어 있는 가압식 그라우팅 장치를 상기 천공부에 삽입하는 단계와; 상기 역류방지부재(20)의 포켓부에 고졀제를 투입하여 내측단 및 외측단의 포지가 팽창되는 수단으로 천공부의 입구 벽면과 팩커 외부면간의 간극을 차단할 수 있도록 한 단계와; 상기 팩커의 그라우트재 주입관에 그라우트재를 주입하여 그라우팅이 이루어지도록 한 단계;를 포함하여서 된 역류방지부재가 구비된 가압식 그라우팅 장치를 이용한 그라우팅 공법을 특징으로 한다.
In addition, the present invention comprises the steps of forming a perforated part of a constant diameter by perforating the ground or the slope; Inserting a pressurized grouting device having a plurality of through holes formed on an outer circumferential surface of the packer formed of a hollow tube and having a backflow preventing member having a pocket portion at a rear end of the packer; Inserting a hardener into the pocket portion of the backflow prevention member 20 to block the gap between the inlet wall of the perforated portion and the outer surface of the packer by means of expanding the forge of the inner and outer ends; Injecting the grout material into the grout material injection tube of the packer to perform the grouting; characterized in that the grouting method using a pressurized grouting device equipped with a backflow prevention member.

본 발명은 사면 및 지반을 보강하기 위해 천공된 천공부에 가압식 그라우팅 장치의 팩커를 삽입하고 팩커의 그라우트재 주입관를 통해 그라우트재를 주입하여 팩커의 통공을 통해 그라우팅이 이루어지도록 하되 팩커의 후단부에 구비된 포켓부 내에 투입되는 고결제가 한정된 공간범위내에서 팽창되게 한 수단으로 상기 천공부의 입구 벽면과 팩커 외부면간의 간극을 완전히 차단하여 역류를 방지할 수 있게 되므로 고결제의 사용량을 최소화하면서 밀착력을 최대화할 수 있게 되어 작업생산성을 높일 수 있는 효과가 있다.
The present invention inserts the packer of the pressurized grouting device into the perforated perforations to reinforce the slope and the ground and inject the grout material through the grout material injection tube of the packer to be grouted through the hole of the packer at the rear end of the packer By minimizing the amount of high settlement due to the means to allow the high settlement introduced into the provided pocket portion to expand within a limited space, it is possible to prevent backflow by completely blocking the gap between the inlet wall of the perforation portion and the outer surface of the packer. The adhesion can be maximized, thereby increasing work productivity.

도 1은 본 발명에 의한 역류방지부재가 구비된 가압식 그라우팅 장치의 주요 구성요소를 나타낸 확대 사시도.
도 2는 본 발명에 의한 역류방지부재가 구비된 가압식 그라우팅 장치의 전체적인 구성실시예를 나타낸 전면도.
도 3은 상기 도 2의 구성에서 역류방지부재 부분을 나타낸 확대 단면도.
도 4는 본 발명에 의한 역류방지부재가 구비된 가압식 그라우팅 장치에서 역류방지부재에 고결제가 투입되어 포지가 팽창된 상태를 나타낸 단면도.
도 5는 상기 도 4의 구성에서 역류방지부재 부분을 나타낸 확대 단면도.
도 6은 본 발명에 의한 역류방지부재가 구비된 가압식 그라우팅 장치를 이용한 팩커에 그라우트재를 주입한 상태를 나타낸 단면도.
도 7은 본 발명에 의한 역류방지부재가 구비된 가압식 그라우팅 장치를 적용하여 그라우팅 실시하는 것을 나타낸 단면도.1 is an enlarged perspective view showing the main components of the pressurized grouting device with a backflow prevention member according to the present invention.
Figure 2 is a front view showing an overall configuration embodiment of the pressure grouting device with a backflow prevention member according to the present invention.
Figure 3 is an enlarged cross-sectional view showing a part of the backflow prevention member in the configuration of FIG.
Figure 4 is a cross-sectional view showing a state in which the forge is expanded by the high binder is introduced into the backflow prevention member in the pressurized grouting device equipped with a backflow prevention member according to the present invention.
Figure 5 is an enlarged cross-sectional view showing a part of the backflow prevention member in the configuration of FIG.
Figure 6 is a cross-sectional view showing a state in which the grout material is injected into the packer using a pressurized grouting device with a backflow prevention member according to the present invention.
Figure 7 is a cross-sectional view showing that the grouting by applying a pressure grouting device equipped with a backflow prevention member according to the present invention.

이하 본 발명의 바람직한 실시예를 첨부된 도면을 참조하여 상세히 설명하면 다음과 같다. 그리고 본 발명을 설명함에 있어서, 관련된 공지기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우 그 상세한 설명을 생략한다.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

본 발명은 사면 및 지반을 보강하기 위해 천공된 천공부에 가압식 그라우팅 장치의 팩커를 삽입하고 팩커의 그라우트재 주입관를 통해 그라우트재를 주입하여 팩커의 통공을 통해 그라우팅이 이루어지도록 하되 상기 천공부의 입구 벽면과 팩커 외부면간의 간극을 완벽하게 차단할 수 있도록 한 수단으로 그라우트재가 역류되는 것을 완벽하게 차단할 수 있도록 한 가압식 그라우팅 장치 및 이를 이용한 그라우팅 공법을 특징으로 한다.
The present invention inserts the packer of the pressurized grouting device into the perforated perforations to reinforce the slope and the ground and injecting grout material through the grout material injection tube of the packer to be grouted through the hole of the packer, but the inlet of the perforated part It is characterized by a pressurized grouting device and a grouting method using the same to completely block backflow of the grout material as a means to completely block the gap between the wall and the outer surface of the packer.

본 발명에 따른 그라우팅 장치(A)는, 중공관체로 이루진 팩커(10)의 외주면에 다수의 통공(12)이 형성되고 일측의 그라우트재 주입관(14)을 통해 그라우트재(B)가 주입될 수 있도록 한 가압식 그라우팅 장치로 이루어지되 상기 팩커(10)의 후단부 외주면에 구비되어 있는 포켓형으로 된 역류방지부재(20)와; 상기 역류방지부재(20)의 내부에 고결제(C)가 주입될 수 있도록 하는 고결제 주입관(28)과; 상기 역류방지부재(20) 내부의 공기가 외부로 배출되도록 하는 공기배출관(29);으로 이루어진 것을 특징으로 한다.
In the grouting device (A) according to the present invention, a plurality of through holes 12 are formed on the outer circumferential surface of the packer 10 made of a hollow tube, and the grout material B is injected through the grout material injection tube 14 on one side. A backflow preventing member (20) formed of a pressurized grouting device, which is provided on the outer peripheral surface of the rear end of the packer (10); A high settlement injection tube (28) to allow a high settlement (C) to be injected into the backflow prevention member (20); Characterized in that consisting of; an air discharge pipe 29 for discharging the air inside the backflow prevention member 20 to the outside.

상기 역류방지부재(20)는; 도 1에 도시된 바와 같이, 팩커(10)의 후단부 외주면에 용접결합되게 철판으로 이루어져 중공부(22a)가 형성되고 양측으로 배치되는 한 쌍의 지지판재(22)(22')와, 상기 지지판재(22)(22') 사이에 위치하고 상기 지지판재(22)(22')의 내측단 및 외측단에 접착 연결되어 내부에 포켓부(26)가 형성되도록 하는 포지(24)와, 상기 일측의 지지판재(22)에 포켓부(26)와 연통되는 고결제 주입관(28)과 공기배출관(29)이 각각 구비되어 있다.
The backflow prevention member 20 is; As shown in FIG. 1, a pair of support plate members 22 and 22 ′ formed of a steel plate to be welded to the outer circumferential surface of the rear end of the packer 10 to form a hollow portion 22a and disposed on both sides thereof, and A forge 24 located between the support plate members 22 and 22 'and adhesively connected to the inner and outer ends of the support plate members 22 and 22' so that the pocket portion 26 is formed therein; The support plate material 22 on one side is provided with a high-purging injection pipe 28 and an air discharge pipe 29 communicating with the pocket portion 26, respectively.

상기 포켓부(26)에 주입되는 고결제(C)는 고결제공급기(C-1)를 이용하여 투입하되 콘크리트용 팽창성 혼합재를 사용하여 팽창제가 시멘트, 물과 혼합되어 체적 팽창이 이루어지도록 함으로써 포지(24)가 팽창하여 천공부의 입구 벽면과 팩커 외부면간에 밀착되어 간극을 차단하게 될 때 강력한 밀착력을 갖도록 있도록 함이 바람직하다.
The high settlement (C) injected into the pocket part 26 is introduced using the high settlement supplying device (C-1), but the expansion agent is mixed with cement and water using an expandable mixing material for concrete so that volume expansion occurs. It is desirable to have a strong adhesion when the 24 expands and closes between the inlet wall of the perforation and the outer surface of the packer to block the gap.

또한, 상기 지지판재(22)(22')는; 천공부(30)의 직경보다 작은 외주면으로 형성되어 팩커(10)를 천공부(30)에 삽입이 용이하게 이루어질 수 있도록 한다.
In addition, the support plate (22) (22 '); It is formed with an outer circumferential surface smaller than the diameter of the perforated portion 30 so that the packer 10 can be easily inserted into the perforated portion 30.

그리고 상기 포켓부(26)의 포지(24)는; 직물포지나 합성수지 포지를 사용하되 신축성을 갖는 재질로 구비하여 포지(24)의 팽창시에 천공부의 입구 벽면과 팩커 외부면에 각각 긴밀한 밀착이 이루어질 수 있도록 하고, 내구성과 발수성을 갖는 재질로 구비함이 바람직하다.
And the forge 24 of the pocket portion 26; Fabric or synthetic resin paper is used, but it is made of elastic material so that the close contact with the inlet wall of the perforation part and the outer surface of the packer can be made at the time of expansion of the forge 24, and the material has durability and water repellency. It is preferable to.

또한, 본 발명에 본 발명에 따른 그라우팅 공법은, 사면 또는 수평으로 된 지반에 천공하여 일정한 직경의 천공부를 형성하는 단계(S1)와; 중공관체로 이루진 팩커(10)의 외주면에 다수의 통공(12)이 형성되고 팩커(10)의 후단부에 포켓부(26)가 형성된 역류방지부재(20)가 구비되어 있는 가압식 그라우팅 장치(A)를 상기 천공부에 삽입하는 단계(S2)와; 상기 역류방지부재(20)의 포켓부(26)에 고결제를 투입하여 내측단 및 외측단의 포지(24)가 팽창되는 수단으로 천공부의 입구 벽면과 팩커 외부면간의 간극을 완벽하게 차단할 수 있도록 한 단계(S3)와; 상기 팩커(10)의 그라우트재 주입관(14)에 그라우트재(B)를 주입하여 그라우팅이 이루어지도록 한 단계(S4);를 포함하여서 된 것을 특징으로 한다.
In addition, the grouting method according to the present invention in the present invention, the step of forming a perforated part of a constant diameter by perforating the ground or the slope (S1); A pressurized grouting device having a plurality of through holes 12 formed on an outer circumferential surface of the packer 10 formed of a hollow tube and having a backflow preventing member 20 having a pocket 26 formed at a rear end of the packer 10 ( Inserting A) into the perforation section (S2); By inserting a high settlement into the pocket portion 26 of the backflow prevention member 20, the forge 24 of the inner end and the outer end is expanded so that the gap between the inlet wall of the perforation part and the outer face of the packer can be completely blocked. One step (S3); Injecting the grout material (B) into the grout material injection tube 14 of the packer 10 to perform the grouting (S4); characterized in that it comprises a.

이와 같이 된 본 발명이 실시예를 첨부된 도면에 의하여 상세히 설명하면 다음과 같다.
When the present invention as described above is described in detail by the accompanying drawings as follows.

사면 및 수평으로 된 지반을 보강하기 위해 지반에 일정한 직경의 천공부(30)를 형성한 다음 가압식 그라우팅 장치(A)의 팩커(10)를 삽입하여 천공부(30)에 그라우팅을 하되 본 발명에서는 상기 천공부(30)의 입구 벽면과 팩커(10) 외부면간의 간극을 완벽하게 차단하여 그라우트재가 역류되는 것을 방지하도록 한 상태에서 그라우팅을 하게 된다.
In order to reinforce the slope and the ground to be formed in the ground to form a perforated portion of a certain diameter and then insert the packer 10 of the pressure grouting device (A) to grout in the perforated portion 30 in the present invention The grouting is performed in a state in which the gap between the inlet wall of the perforation part 30 and the outer surface of the packer 10 is completely blocked to prevent the grout material from flowing backward.

즉, 본 발명의 가압식 그라우팅 장치(A)는 도 1 내지 도 3에서와 같이 팩커(10)의 후단부 외주면에 포켓형으로 된 역류방지부재(20)가 구비되어 천공부(30)에 팩커(10)를 삽입하는 경우에 천공부의 입구 벽면과 팩커 외부면간에 놓여지게 된다.
That is, the pressurized grouting device (A) of the present invention is provided with a backflow prevention member (20) in a pocket on the outer peripheral surface of the rear end of the packer (10) as shown in Figs. ) Is placed between the inlet wall of the perforation and the outer surface of the packer.

이러한 상태에서 도 4에서와 같이 역류방지부재(20)의 포켓부(26)에 고결제를 투입하게 되면 포켓부(26)의 공기는 공기배출관(29)을 통해 외부로 배출이 됨과 아울러 지지판재(22)(22') 사이의 내측단 및 외측단에 연결되어 있는 포지(24)는 고결제에 의해 내측 및 외측으로 팽창이 되면서 천공부(30)의 입구 벽면과 팩커(10) 외부면에 긴밀하게 밀착이 이루어진다.
In such a state, as shown in FIG. 4, when high settlement is introduced into the pocket part 26 of the backflow prevention member 20, the air of the pocket part 26 is discharged to the outside through the air discharge pipe 29 and the support plate material. The forge 24, which is connected to the inner and outer ends between the 22 and 22's, is inflated inward and outward by high settlement and is formed on the inlet wall of the perforated portion 30 and the outer surface of the packer 10. Close contact is achieved.

즉, 도 5의 확대도에서 보는 바와 같이 포켓부(26)에 고결제(C)가 투입되면 포켓부(26)에 채워지게 됨과 아울러 고결제(C)는 체적 팽창이 되면서 포지(24)를 내측 및 외측으로 강하게 팽창시켜 포지(24)가 천공부(30)의 입구 벽면과 팩커(10) 외부면에 강력한 밀착력으로 간극을 생기지 않도록 하게 된다.
That is, as shown in the enlarged view of FIG. 5, when the high settlement C is introduced into the pocket portion 26, the pocket portion 26 is filled in the pocket portion 26, and the high settlement C is expanded in volume and the forge 24 is opened. Strong expansion inward and outward prevents the forge 24 from forming a gap with strong adhesion to the inlet wall of the perforation 30 and the outer surface of the packer 10.

이렇게 포켓부(26) 내에 투입되는 고결제가 한정된 공간범위내에서 팽창되게 한 수단으로 역류를 방지할 수 있게 되므로 고결제의 사용량을 최소화하면서 밀착력을 최대화할 수 있게 되어 작업생산성을 높일 수 있게 된다.
Since the high settlement introduced into the pocket 26 is prevented from flowing backward by a means that allows the high settlement to expand within a limited space, the productivity can be maximized while minimizing the use of the high settlement. .

그리고 도 6에서와 같이 팩커(10)의 그라우트재 주입관(14)를 통해 그라우트재를 주입하여 팩커(10)의 통공(12)을 통해 천공부(30)에 그라우팅이 이루어지도록 한 다음 천공부(30)의 입구부분을 콘크리트 등으로 마감하게 되는 것이다.
And grout material is injected through the grout material injection pipe 14 of the packer 10 as shown in FIG. 6 so that the grouting is made to the perforated part 30 through the through hole 12 of the packer 10 and then the perforated part The entrance portion of 30 is to be finished with concrete and the like.

이상에서 본 발명은 상기 실시예를 참고하여 설명하였지만 본 발명의 기술사상범위내에서 다양한 변형실시가 가능함은 물론이다.
While the present invention has been described with reference to the exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments.

A : 그라우팅 장치 B : 그라우트재
C : 고결제 C-1 : 고결제공급기
10 : 팩커 12 : 통공
14 : 그라우트재 주입관 20 : 역류방지부재
22,22' : 지지판재 22a : 중공부
24 : 포지 26 : 포켓부
28 : 고결제 주입관 29 : 공기배출관
30 : 천공부A: grouting device B: grouting material
C: High Payment C-1: High Payment Supplier
10: packer 12: through
14: grout material injection tube 20: backflow prevention member
22,22 ': support plate 22a: hollow part
24: Forge 26: Pocket
28: high-purity injection pipe 29: air discharge pipe
30: perforation

Claims (5)

중공관체로 이루진 팩커(10)의 외주면에 다수의 통공(12)이 형성되고 일측의 그라우트재 주입관(14)을 통해 그라우트재가 주입될 수 있도록 한 가압식 그라우팅 장치와, 상기 팩커(10)의 후단부 외주면에 구비되어 있는 포켓형으로 된 역류방지부재(20)가 구비된 것에 있어서,
상기 역류방지부재(20)는;
상기 팩커(10)의 후단부 외주면에 용접 결합되게 철판 재질로 이루어지되 중공부(22a)가 형성되어 양측으로 배치되는 한 쌍의 지지판재(22)(22')와,
상기 지지판재(22)(22') 사이에 위치하고 상기 지지판재(22)(22')의 내측단 및 외측단에 접착되어 내부에 포켓부(26)가 형성되도록 하는 포지(24)와,
상기 포켓부(26)와 연통되고, 상기 한 쌍의 지지판재(22) 사이의 한정된 공간에서 역류방지부재(20)의 내부에 고결제가 주입될 수 있도록 하는 고결제 주입관(28)과,
상기 지지판재(22)에 포켓부(26)와 연통되어, 역류방지부재(20) 내부에 고결제가 주입될 때 역류방지부재(20) 내부의 공기가 외부로 배출되도록 하는 공기배출관(29)을 포함하는 구성으로 됨을 특징으로 하는 역류방지부재가 구비된 가압식 그라우팅 장치.A pressurized grouting device and a plurality of through holes 12 are formed on the outer circumferential surface of the packer 10 made of a hollow tube, and the grout material can be injected through the grout material injection pipe 14 on one side, and the packer 10 of the packer 10. In the case where the backflow prevention member 20 of the pocket type provided in the outer peripheral surface of a rear end part is provided,
The backflow prevention member 20 is;
A pair of support plate members 22 and 22 'which are made of an iron plate material to be welded to the outer end surface of the rear end of the packer 10 and have hollow portions 22a formed on both sides thereof;
A forge 24 disposed between the support plate members 22 and 22 'and bonded to the inner and outer ends of the support plate members 22 and 22' to form a pocket 26 therein;
A high settlement injection tube 28 communicating with the pocket part 26 and allowing high settlement to be injected into the backflow preventing member 20 in a limited space between the pair of supporting plate materials 22;
In communication with the pocket portion 26 to the support plate 22, the air discharge pipe 29 for discharging the air in the backflow prevention member 20 to the outside when a high settlement is injected into the backflow prevention member 20 Pressurized grouting device with a backflow prevention member, characterized in that the configuration comprising a. 삭제delete 삭제delete 삭제delete 삭제delete
KR1020120012473A 2012-02-07 2012-02-07 The pressure type grouting equipment for groundreinforcement, and a method of construction KR101203316B1 (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524355B1 (en) * 2013-07-04 2015-06-04 이광익 Tunnel grouting reinforcement method
KR20210067906A (en) 2019-11-29 2021-06-08 덴버코리아이엔씨(주) Monitor apparatus for grouting
CN114908775A (en) * 2022-05-18 2022-08-16 陕西工业职业技术学院 Loess landslide comprehensive treatment structure and construction method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101524355B1 (en) * 2013-07-04 2015-06-04 이광익 Tunnel grouting reinforcement method
KR20210067906A (en) 2019-11-29 2021-06-08 덴버코리아이엔씨(주) Monitor apparatus for grouting
CN114908775A (en) * 2022-05-18 2022-08-16 陕西工业职业技术学院 Loess landslide comprehensive treatment structure and construction method thereof
CN114908775B (en) * 2022-05-18 2023-06-02 陕西工业职业技术学院 Loess landslide comprehensive treatment structure and construction method thereof

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