KR20120014283A - Method of grouting by double packer in pre-stressed tunnel and hydrauric type automatic inserting device for linear member - Google Patents

Method of grouting by double packer in pre-stressed tunnel and hydrauric type automatic inserting device for linear member Download PDF

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KR20120014283A
KR20120014283A KR1020100076222A KR20100076222A KR20120014283A KR 20120014283 A KR20120014283 A KR 20120014283A KR 1020100076222 A KR1020100076222 A KR 1020100076222A KR 20100076222 A KR20100076222 A KR 20100076222A KR 20120014283 A KR20120014283 A KR 20120014283A
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packer
grouting
tunnel
pipe
hole
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KR1020100076222A
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Korean (ko)
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KR101251240B1 (en
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김남혁
서동현
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(주)현이앤씨
서동현
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/001Improving soil or rock, e.g. by freezing; Injections
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12Consolidating by placing solidifying or pore-filling substances in the soil
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D20/00Setting anchoring-bolts
    • E21D20/02Setting anchoring-bolts with provisions for grouting
    • E21D20/028Devices or accesories for injecting a grouting liquid in a bore-hole

Abstract

PURPOSE: A grouting method in a pre-stressed tunnel using a double packer and a hydraulic support member inserting device are provided to inject an injection material into the ground even if the ground has water. CONSTITUTION: A grouting method in a pre-stressed tunnel using a double packer is as follows. A temporary packer(4) is installed in a linear support member and is inserted into the inlet of a hole. The support member is connected to the front end of a pipe having a main packer(5) and is inserted into a borehole of a tunnel excavation line. An injection material is injected into the temporary packer. A main injection material is injected into the main packer. After the injection, the pipe having the main packer is removed.

Description

선지보 터널에서 이중 팩커에 의한 그라우팅 공법 및 유압식 선재 삽입 장치{Method of grouting by double packer in pre-stressed tunnel and hydrauric type automatic inserting device for linear member}Method of grouting by double packer in pre-stressed tunnel and hydrauric type automatic inserting device for linear member}

본 발명은 이중 팩커에 의한 그라우팅 공법에 관한 것으로써, 더욱 상세하게는 해저 터널과 같은 피압 용출수가 있거나 원지반의 물성을 개선해야 하는 지반 조건에서 천공홀에 선지보재를 설치하기 위한 과정에서 효율적으로 그라우팅을 하기 위하여 선지보 터널에서 이중 팩커에 의한 그라우팅 공법에 관한 것이다.The present invention relates to a grouting method by a double packer, more specifically, grouting efficiently in the process for installing the preservation material in the drilling hole in the ground conditions under pressure such as subsea tunnel or improved ground properties It is related to the grouting method by the double packer in the sunbo tunnel.

본 발명은 터널의 지표면에서 본 터널 굴착 전에 선지보재를 설치하거나 대단면 터널의 중심에 파일럿 터널을 선굴착하여 본선 터널 굴착면에 선지보재를 먼저 설치한 후, 대단면 터널의 본선 굴착면까지 확공하는 시공 방법에 있어서, 구조적 안정을 위해 선지보재를 효과적으로 설치하는 방법에 관한 것이다.The present invention installs the preservation prior to the excavation of the tunnel from the ground surface of the tunnel or pre-excavates the pilot tunnel in the center of the large cross section tunnel and installs the preliminary preservation on the main tunnel excavation surface, and then expands to the main excavation surface of the large cross section tunnel. In the construction method, the present invention relates to a method for effectively installing the props for structural stability.

또한, 본 발명은 경화 시간이 긴 시멘트와 같은 주입 재료도 용출수가 있는 지반에서 안정적으로 사용이 가능하게 하기 위한 선지보 터널에서 이중 팩커에 의한 그라우팅 공법에 관한 것이다.In addition, the present invention relates to a grouting method by a double packer in the line beam tunnel to enable stable use of the injection material such as cement with a long curing time in the ground with the eluted water.

본 발명은 선지보 터널에서 철근과 같은 선지보재나 파이프형 팩커와 같은 선재를 유압식으로 자동으로 삽입하기 위한 장치에 관한 것이다.The present invention relates to an apparatus for automatically inserting hydraulic wires such as wire rods such as rebars or pipe-type packers in the wire beam tunnel.

종래의 NATM 터널 공법은 굴착하는 터널 내에서 굴착면에 직접 숏크리트와 락볼트를 시공하므로 원지반의 아칭을 유도하여 원지반이 자립하도록 하는 시공 방법이다.The conventional NATM tunnel method is a construction method that allows the base plate to stand on its own by inducing arching of the base plate because the shotcrete and the rock bolt are directly installed on the excavation surface in the tunnel to be excavated.

선지보 터널 공법은 본 발명의 출원자가 선출원한 대한민국 특허출원 제10-2005-0114621호에 개시되어 있으며, 지표면에서 굴착 전에 선지보재를 설치하거나 대단면 터널의 중심에 파일럿 터널을 선굴착하여 파일럿 터널에서 본 터널 굴착면에 선지보재를 먼저 설치한 후, 대단면 터널의 본선 굴착면까지 확공하는 시공 방법이 개시되어 있다.The propagation tunneling method is disclosed in Korean Patent Application No. 10-2005-0114621, which is filed by the applicant of the present invention, and the pilot tunnel is installed by pre-drilling the pilot tunnel in the center of the large-section tunnel before the excavation on the ground surface. A construction method is disclosed in which a wire retainer is first installed on a tunnel excavation surface, and then expanded to the main excavation surface of a large cross section tunnel.

종래의 NATM 공법에 의한 터널에서는 터널 굴착 후, 숏크리트를 타설하고 전면 부착식 락볼트를 설치한다. 그러나, 이때에 이미 원지반이 총 변형량의 60~80%정도까지 변형을 받은 상태이며, 결과적으로는, 추가적인 변형량이 20~40% 정도만이 남아 있는 상태가 된다. 따라서, 락볼트 지보재에 발생하는 응력은 원지반의 변형량에 따라 생기므로 매우 적은 응력만이 발생하게 되는 것이다. 결국 락볼트 지보재의 실제 능력에 비해 지보 효과가 매우 미미하게 되는 문제점이 있었다.In the tunnel by the conventional NATM method, after the excavation of the tunnel, shotcrete is poured and a front mounting rock bolt is installed. However, at this time, the base has been deformed to about 60 to 80% of the total deformation amount, and as a result, only 20 to 40% of the additional deformation amount remains. Therefore, the stress generated in the rock bolt support material is generated according to the deformation amount of the base, so that very little stress is generated. Eventually, there was a problem that the support effect is very insignificant compared to the actual ability of the rock bolt support material.

반면에 선지보재는 선 설치 후, 굴착하므로써 원지반의 굴착 변형량을 초기부터 전량 부담하므로써 지보 역할이 NATM공법의 락볼트보다 더 크게 된다. 이와 같은 선지보재는 터널의 지표면에서 또는 갱내에서 수직으로 설치되거나 방사상으로 설치되었다. 그리고, 보통 선지보재는 강봉, 강연선, 고강도 탄소 섬유, FRP와 같은 선재를 사용한다.On the other hand, the preservation bears the role of the support more than the lock bolt of NATM method by paying the entire amount of excavation deformation of the original ground by excavation after installation. Such props were installed vertically or radially on the surface of the tunnel or in the pit. In addition, wire rods are usually used as wire rods, strands, high strength carbon fiber, FRP.

해저 터널과 같은 피압 용출수가 있거나 원지반의 물성을 개선해야 하는 지반 조건에서 천공홀에 선지보재를 설치하기 위한 과정에서 종래 기술에 따른 팩커에 의한 그라우팅 공법은 피압 용출수가 게속 흘러나오기 때문에 그라우팅을 할 수 없다는 문제점이 발생한다.The grouting method by the packer according to the prior art can grout because the pressurized effluent flows out in the process of installing the preservation material in the perforated hole in the ground condition under pressure such as a subsea tunnel or the ground condition where the physical properties of the ground should be improved. Problem occurs.

갱내에서 천단 쪽 상향으로 수 미터 내지 수십 미터가 되는 천공홀을 그라우팅을 위한 선지보재와 파이프형 팩커를 삽입하는 것은 인력으로는 비능률적이며 근골격계 질환을 야기하는 등의 문제점이 있어 선지보재나 파이프형 팩커를 삽입하는 작업을 회피하는 폐단이 있어 왔다.Inserting the preload and pipe packers for grouting drilled holes that are several meters to tens of meters upward in the pit are inefficient for manpower and cause musculoskeletal disorders. There has been a closure to avoid the task of inserting.

이러한 점을 개선하기 위하여, 본 발명은 선지보재와 파이프형 팩커를 상향으로 삽입하기 위한 기계 장치를 작업대에 장착하여 쉽게 시공하고 본 발명은 터널의 중심에 파일럿 터널을 선굴착하여 파일럿 터널에서 본 터널 굴착면에 선지보재를 먼저 설치한 후, 본 터널의 굴착면까지 확공하는 시공 방법에서 선지보재를 설치하는 과정에서 그라우팅을 효율적으로 하기 위한 것이다.
In order to improve this point, the present invention can be easily installed by mounting a mechanical device for inserting the preload material and the pipe-type packer upward on the workbench, and the present invention is a tunnel seen from the pilot tunnel by pre-excavating the pilot tunnel in the center of the tunnel After the installation of the props on the excavation surface first, in the construction method to expand to the excavation surface of the present tunnel in order to efficiently grout in the process of installing the props. In order to improve this point, the present invention can be easily installed by mounting a mechanical device for inserting the preload material and the pipe-type packer upward on the workbench, and the present invention is a tunnel seen from the pilot tunnel by pre- excavating the pilot tunnel in the center of the tunnel After the installation of the props on the excavation surface first, in the construction method to expand to the excavation surface of the present tunnel in order to efficiently grout in the process of installing the props.

본 발명의 목적은 종래 선지보 터널 공법에 있어서, 해저 터널과 같은 피압 용출수가 있거나 원지반의 물성을 개선해야 하는 지반 조건에서 천공홀에 선지보재를 설치하기 위한 과정에서 그라우팅을 효율적으로 하기 위한 선지보 터널에서 이중 팩커에 의한 그라우팅 공법을 제공하는 데 있다.An object of the present invention is to provide a grout for efficient grouting in the process of installing the scaffolding in the drilling hole in the ground conditions in which the pressure of the eluted water, such as the subsea tunnel or the physical properties of the ground should be improved It is to provide a grouting method by a double packer in the tunnel.

또한, 본 발명의 다른 목적은 경화 시간이 긴 시멘트와 같은 주입 재료도 용출수가 있는 지반에서 안정적으로 사용이 가능하게 하기 위한 선지보 터널에서 이중 팩커에 의한 그라우팅 공법을 제공하는 데 있다.
In addition, another object of the present invention is to provide a grouting method by the double packer in the line beam tunnel to enable the stable use of the injection material, such as cement with a long curing time in the ground with the eluted water.

발명의 상기 목적은 하기 특징들에 의해 달성된다. This object of the invention is achieved by the following features.

본 발명의 제 1 형태는 선지보 터널 공법에서 선지보재 천공홀에 임시 팩커와 본 팩커를 이중으로 설치하는 것을 특징으로 한다.The first aspect of the present invention is characterized in that a temporary packer and the present packer are provided in double in the propagation hole drilling hole in the propagation tunnel method.

본 발명의 제 2 형태는 시공 순서에 있어서 선지보재에 임시 팩커를 장착하여 홀입구까지 삽입하고 선지보재를 본 팩커가 구성된 파이프 선단에 연결하여 본 터널 굴착선까지 천공홀에 밀어넣는 단계와, 임시 팩커에 주입액을 충진 주입하는 단계와, 본 팩커를 작동하여 주주입재를 주입하는 단계와, 주입 완료 후, 본 팩커가 구성된 파이프를 회수하는 단계로 이루어진 것을 특징으로 한다.According to the second aspect of the present invention, a temporary packer is mounted on the billet holder in the construction order to insert it into the hole inlet, and the billet holder is connected to the pipe end configured with the packer. Pushing the injection hole to the main tunnel rig, filling and injecting the injection liquid into the temporary packer, injecting the main injection material by operating the packer, and recovering the pipe configured with the packer after the injection is completed. Characterized in consisting of steps.

본 발명의 제 3 형태는 상기 시공 순서에서 선지보재를 본 팩커가 구성된 파이프 선단에 연결하기 전에 단순 삽입용 파이프로 선지보재와 임시 팩커를 삽입하고 임시 팩커용 주입재를 먼저 주입하고 주입 호스(hose)를 제거한 후, 양생이 완료된 후, 본 팩커를 삽입하여 본 주입을 완료하는 것을 특징으로 한다.
According to the third aspect of the present invention, before the input material is connected to the pipe tip configured with the packer in the construction sequence, the input material and the temporary packer are inserted into the pipe for simple insertion, and the injection material for the temporary packer is first injected and the injection hose is made. After removal, after curing is completed, the present pack is inserted, characterized in that to complete the injection.

본 발명은 선지보재를 설치할 때, 임시 팩커를 장착하여 그라우팅하게 되므로 본 터널 굴착시 추가 프리 그라우팅이 필요하지 않게 되는 효과가 있다. The present invention has the effect that additional pre-grouting is not required during the excavation of the tunnel because the grinder is equipped with a temporary packer when installing the props.

본 발명은 선지보 터널에서 이중 팩커를 사용하므로 수압을 받는 용출수가 있는 지반에서도 주입액을 주입하고 즉시 본 팩커를 제거할 수 있는 효과가 있다.Since the present invention uses a double packer in the seismic tunnel, there is an effect of injecting the injection liquid and removing the present packer immediately even in the ground with the effluent water under hydraulic pressure.

본 발명은 겔타임이 짧은 주입재는 급격한 반응으로 맥상 주입을 긴시간 동안 할 수 없으나 겔타임이 긴 마이크로 시멘트와 같은 주입재를 서서히 긴시간 동안 주입하여 주입 확산 거리를 길게 할 수 있는 효과가 있다.In the present invention, an injection material having a short gel time cannot be injected for a long time due to a rapid reaction, but an injection material such as micro cement having a long gel time is gradually injected for a long time, thereby increasing the injection diffusion distance.

본 발명은 상향으로 주입시 겔타임이 긴 주입재는 경화 전에 팩커를 즉시 제거하면 주입재가 역류하나 본 공법은 임시 팩커가 역류를 방지하고 토출 호스가 임시 팩커에 구성되므로 홀 내에 용출수가 많아도 토출 호스로 물이 배출되면서 수압을 받지 않는 상태에서 팩커를 부풀릴 수 있어 용출수가 있는 곳에서도 용이하게 시공할 수 있는 효과가 있다.In the present invention, when the injection material with a long gel time when injected upward is removed from the packer immediately before curing, the injection material flows back, but this method prevents the back flow of the temporary packer and the discharge hose is configured in the temporary packer. As the water is discharged, the packer can be inflated without receiving water pressure, and thus it can be easily installed even in the presence of eluted water.

본 발명은 임시 팩커는 급결 시멘트 또는 우레탄 등을 주입재로 사용할 수 있고 겔타임이 짧은 우레탄은 즉시 발포되므로 시공을 신속하게 할 수 있는 효과가 있다. In the present invention, the temporary packer may use a cement or urethane as an injection material, and the urethane having a short gel time is immediately foamed, so that construction can be performed quickly.

또한, 파일럿 터널에서 본 터널의 상향으로 주입시 선지보재 삽입과 본 팩커가 구성된 파이를 용이하게 밀어 넣을 수 있는 유압식 선재 삽입 장치를 작업대에 정착하여 사용함으로써 시공 효율을 높게 하는 효과가 있다.
In addition, there is an effect of increasing the construction efficiency by using a hydraulic wire inserting device that can be easily pushed into the pre-insert insertion and the packer configured pie when the injection in the pilot tunnel upward injection. In addition, there is an effect of increasing the construction efficiency by using a hydraulic wire inserting device that can be easily pushed into the pre-insert insertion and the packer configured pie when the injection in the pilot tunnel upward injection.

도 1은 선지보 터널의 개념을 도시한 도면이다.
도 2는 이중 팩커가 설치된 상태를 도시한 도면이다.
도 3은 포대형 임시 팩커와 파이프형 본 팩커를 도시한 상세도이다.
도 4는 파이프형 본 팩커의 상세도로서 파이프 내부에 주입 호스와 토출 호스, 임시 팩커 내부 주입 호스가 장착된 상태를 도시한 도면이다.
도 5는 파이프형 본 팩커 선단 단면의 상세도이다.

도 6은 임시 팩커와 파이프형 본 팩커로서 토출 호스와 주입 호스가 파이프에 장착된 상태를 도시한 도면이다. 6 is a view showing a state in which a discharge hose and an injection hose are mounted on a pipe as a temporary packer and a pipe-type bone packer.
도 7은 선지보재 삽입을 위한 삽입 파이프를 도시한 도면이다. 7 is a view showing an insertion pipe for inserting a wire support material.
도 8은 선지보재를 삽입하기 위한 작업 대차 사진이다. Figure 8 is a photograph of a work cart for inserting the preservation material.
도 9는 그라우팅 파이프 삽입 장치의 평면도와 측면도이다. 9 is a plan view and a side view of a grouting pipe insertion device.
도 10은 양축에 파이프가 삽입된 상태를 도시한 도면이다. 10 is a view showing a state in which pipes are inserted into both shafts.
도 11은 파이프가 양축의 회전에 의해 인양된 상태를 도시한 도면이다. 11 is a view showing a state in which the pipe is lifted by rotation of both axes.
도 12 내지 도 17은 시공 순서를 보여주는 사진이다. 12 to 17 are photographs showing the construction sequence. 1 is a diagram illustrating the concept of a sunbo tunnel. 1 is a diagram illustrating the concept of a sunbo tunnel.
2 is a diagram illustrating a state in which a double packer is installed. 2 is a diagram illustrating a state in which a double packer is installed.
3 is a detailed view of the bag-type temporary packer and the pipe-type bone packer. 3 is a detailed view of the bag-type temporary packer and the pipe-type bone packer.
4 is a detailed view of a pipe-shaped bone packer showing a state in which an injection hose, a discharge hose, and a temporary packer internal injection hose are mounted inside the pipe. 4 is a detailed view of a pipe-shaped bone packer showing a state in which an injection hose, a discharge hose, and a temporary packer internal injection hose are mounted inside the pipe.
5 is a detailed view of a cross section of a pipe-shaped bone packer tip. 5 is a detailed view of a cross section of a pipe-shaped bone packer tip.
6 is a view showing a state where the discharge hose and the injection hose is mounted on the pipe as a temporary packer and a pipe-shaped bone packer. 6 is a view showing a state where the discharge hose and the injection hose is mounted on the pipe as a temporary packer and a pipe-shaped bone packer.
7 is a view illustrating an insertion pipe for inserting the preservation material. 7 is a view illustrating an insertion pipe for inserting the preservation material.
8 is a work balance picture for inserting the preservation material. 8 is a work balance picture for inserting the preservation material.
9 is a plan view and a side view of the grouting pipe insertion device. 9 is a plan view and a side view of the grouting pipe insertion device.
10 is a view illustrating a state in which a pipe is inserted into both shafts. 10 is a view illustrating a state in which a pipe is inserted into both shafts.
11 is a view showing a state in which a pipe is lifted by rotation of both shafts. 11 is a view showing a state in which a pipe is lifted by rotation of both shafts.
12 to 17 are photographs showing the construction sequence. 12 to 17 are photographs showing the construction sequence.

본 발명의 구성을 첨부된 도면을 참조하여 이하에서 상세하게 설명한다.The configuration of the present invention will be described in detail below with reference to the accompanying drawings.

도 1을 참조하면, 종래의 선지보 터널은 파일럿 터널선(2)까지 선 굴착하고 이 과정에서 지반을 확인하여 선지보재의 간격을 좁히거나 넓혀서 시공을 하게 된다. 이러한 선지보재는 본 터널 굴착선(1)을 지나 원 지반에 설치되어야 하며 선지보재(3) 시공을 위한 천공홀은 파일럿 터널과 본 터널의 굴착면 사이에는 빈공이 되고 그 나머지 부분인 원지반은 완벽히 그라우팅이 되어 지반과 일체화가 되어야 한다.Referring to FIG. 1, the conventional propagation tunnel is pre-excavated to the pilot tunnel line 2 and the ground is confirmed in this process to narrow or widen the spacing of the propagation. This preliminary treasure is to be installed on the original ground past the main tunnel excavation line (1), and the drilling hole for the construction of the preliminary treasure (3) becomes an empty space between the pilot tunnel and the excavation surface of the main tunnel, and the rest of the ground is completely It should be grouted and integrated with the ground.

만약에 지반이 연약하거나 용출수로 인하여 터널 시공에 부적합한 경우, 선지보재(3)를 시공하는 과정에서 그라우팅시 압력 그라우팅을 할 수 있다면 터널 원지반의 물성을 개선하고 차수를 할 수 있게 된다.If the ground is weak or unsuitable for tunnel construction due to elution water, if the grouting can be pressure grouted during the construction of the preload material (3), the properties of the tunnel ground can be improved and ordered.

그러나, 종래에는 압력 그라우팅을 터널 굴착면에서 할 경우, 지반이 연약할 경우, 그라우팅 압력을 굴착면의 구속압으로 유지하기에는 부족하였다. 반면, 선지보 터널 공법은 파일럿 터널에서 본 터널 굴착선에 팩커를 설치하고 가압하면 터널 굴착면에서 팩커까지의 깊이만큼 원지반이 버티는 구속압이 커지게 되므로 더 안전하게 압력 그라우팅을 할 수 있게 된다.     However, conventionally, when pressure grouting is performed on the tunnel excavation surface, when the ground is soft, it is insufficient to maintain the grouting pressure as the restraining pressure of the excavation surface. On the other hand, in the seismic tunneling method, when the packer is installed and pressurized in the tunnel drilling line seen from the pilot tunnel, the restraint pressure of the base is increased as much as the depth from the tunnel digging surface to the packer, so that the pressure grouting can be performed safely.

도 2 내지 도 17을 보면, 또한, 압력 그라우팅 방향이 파일럿 터널에서 터널 천단부에 그라우팅시는 그라우팅 완료 후, 팩커를 제거하면 주입홀에 받고 있는 수압과 중력에 의해 응결시간이 긴 주입액은 역으로 토출되게 된다. 이것을 해결하기 위하여, 홀 내에 매몰시키는 임시 팩커(4)를 선지보재에 설치하고 보다 더 큰 압력(15~30kg/cm2)으로 가압이 가능한 본 팩커(5)를 천공홀에 이중으로 사용하고 작업 완료 후에는 본 팩커(5)는 회수하고 임시 팩커(4)는 주입된 주입액이 경화될 때까지 토출되지 않도록 하는 역할을 한다.      2 to 17, in addition, when the grouting direction is pressure-grouting direction at the top end of the tunnel in the pilot tunnel and the packer is removed after the grouting is completed, the injection liquid having a long condensation time due to the hydraulic pressure and gravity received in the injection hole is reversed. To be discharged. In order to solve this problem, the temporary packer 4 buried in the hole is installed in the holding material, and this packer 5 capable of pressurizing at a higher pressure (15 to 30 kg / cm2) is used twice in the drilling hole and the work is completed. After this, the packer 5 is recovered and the temporary packer 4 serves to prevent the injected injection liquid from being discharged until it is cured.

상세히 작업 방법을 기술하면, 갱내 선지보 터널에서 파일럿 터널을 굴착 후, 본 터널(5)을 향해 선지보재(3)를 삽입하기 위한 천공홀을 시공 후, 선지보재를 삽입 후, 그라우팅을 하는 데 있어서, In detail, the method of operation is to excavate the pilot tunnel in the inner beam tunnel, construct a drilling hole for inserting the beam retainer 3 toward the main tunnel 5, insert the beam retainer, and grout. In

주입재의 흐름은 주입펌프에서 본 팩커(5)가 구성된 파이프와 임시팩커를 관통한 선단에 체크벨브(6)가 달린 주입관(9)을 통해 주입되며 천공홀에 충진이 완료되면 토출호스(8)를 통해 공기와 물이 배출되다가 주입액이 배출된다. 이때 토출 밸브를 닫아서 가압 그라우팅을 하게되는 것이다. 이 시공방법을 설명하면       The flow of injection material is injected through the injection pipe 9 with the check valve 6 at the tip through the pipe and the temporary packer where the packer 5 is formed in the injection pump, and when the filling of the drilling hole is completed, the discharge hose 8 Air and water are discharged through) and the injection liquid is discharged. At this time, the pressure is grouted by closing the discharge valve. Explaining this construction method

압력 그라우팅 후, 팩커 제거시 그라우팅이 토출되는 것을 방지하기 위한 임시 팩커(4) 선지보재에 설치하고 천공홀(21) 입구까지 삽입하는 단계, After the pressure grouting, the temporary packer (4) to prevent the grouting is discharged when the packer is removed, installed in the front retainer and inserted into the hole of the hole 21,

임시 팩커(4)의 내부 주입 호스(7), 선지보재 주입 호스(9), 천공홀내 토출 호스(8)를 본 팩커가 구성된 파이프 선단에 각각 연결하는 단계, Internal injection hose (7) of temporary packer (4), Connecting the pre-injected injection hose 9 and the discharge hole 8 in the drill hole to the pipe end configured with the present packer,

선지보재(3)를 본 팩커(5)가 구성된 파이프 선단에 연결하여 천공홀(21)에 밀어 넣는 단계, Connect the holding material (3) to the pipe end where the packer (5) Pushing into the drilling hole 21,

임시 팩커(4)에 주입액을 충진 주입 양생하는 것과 본 팩커(5)를 작동하여 주주입재를 주입하는 단계, Filling and curing the injection liquid into the temporary packer 4 and operating the main packer 5 to inject the main injection material;

주입 완료 후, 본 팩커(5)가 구성된 파이프(22)를 회수하는 단계로 이루어진다. After the completion of the injection, the packer 5 consists in recovering the configured pipe 22.

상기 방법에서 본 팩커(5)를 연결할 때, 작업대차(24)를 사용하여 상향으로 선지보재(3)와 본 팩커(5)가 구성된 파이프를 밀어넣는 그라우팅 파이프와 같은 선재 삽입 장치(25)를 사용하게 되며 임시 팩커(4)에 주입재를 넣을 때에는 지하수 용출이 많을 때에는 본 팩커(5)를 먼저 팽창시키고 주입할 수도 있는 데, 이때, 팩커 주입재는 경화 시간이 필요하다.When the bone packer 5 is connected in the above method, a wire inserting device 25 such as a grouting pipe for pushing the pipe including the preload material 3 and the bone packer 5 upwards using the work cart 24 is used. When the injection material is put into the temporary packer 4, when the groundwater is eluted, the packer 5 may be inflated and injected first, and the packer injection material needs curing time.

상기 선지보재 주입 호스는 선단이 막힌 파이프의 선단측 외주면에 구멍이 형성되고, 그 구멍을 원통 고무밴드로 채워서 막고 원통 고무밴드는 파이프에 일단을 밴드로 고정한 체크 밸브 역할을 하는 것으로 임시 팩커를 관통하여 체크 밸브 부분이 천공홀 심부쪽으로 설치하며 그 역할은 본 팩커(5)를 통한 주입재가 임시 팩커(4)를 통하여 선지보재 천공홀에 주입되고 선단의 체크 밸브(6)에 의해 주입 완료 후 역류를 방지한다.The prefilled injection hose is formed with a hole in the outer peripheral surface of the tip side of the pipe whose end is blocked, and the hole is filled with a cylindrical rubber band to prevent it, and the cylindrical rubber band acts as a check valve fixed at one end to the pipe by a band to penetrate the temporary packer. The check valve part is installed toward the center of the drilled hole, and its role is to inject the injected material through the packer 5 into the pre-loaded punched hole through the temporary packer 4 and backflow after completion of the injection by the check valve 6 at the tip. To prevent.

상기 천공홀 토출 호스(8)는 선지보재를 상향으로 설치시는 선단까지 본 팩커(5)가 구성된 파이프와 임시 팩커(4)를 관통하여 측면에 설치하며 주주입재를 주입시 천공홀 내에 공기와 물이 원활이 배출되도록 하고 임시 팩커에 그라우트액을 주입시는 팽창되어 경화될 때까지 임시 팩커(4)에 홀내 용출수에 의한 수압을 해소하는 역할을 한다. 또한 선지보재가 하향 설치시는 주 주입재 호스를 길게 선단까지 설치하고 토출 호스를 짧게 임시 패커앞 까지 설치한다. The drilling hole discharge hose (8) is installed on the side through the pipe and the temporary packer (4) consisting of the packer (5) to the front end to install the preservation material upwards, and the air in the drilling hole when the main injection material is injected When water is smoothly discharged and grout liquid is injected into the temporary packer, it serves to relieve the water pressure by the elution water in the hole in the temporary packer 4 until it is expanded and cured. In addition, when the preload is installed downward, install the main filler hose up to the tip and the discharge hose shortly up to the temporary packer.

그라우팅이 토출되는 것을 방지하기 위한 임시 팩커(4) 선지보재(3)에 조립하고, 파이프로 이 선지보재를 천공홀에 삽입하고, 먼저 임시 팩커에 급결용 그라우팅을 한 후에 임시 그라우팅 호스를 제거하고, 본 팩커가 구성된 파이프를 토출 호스를 내부로 넣어 천공홀에 삽입하여 그라우팅주제를 압력 그라우팅하는 시공 순서를 다르게 할 경우는, 천공홀 내에 용출 수압이 적을 때와, 임시 팩커에 양생 시간을 요하는 겔타임이 길 경우에 적합하다.Assemble the temporary packer 4 to the preloader 3 to prevent grouting from discharging, insert this preloader into the drilled hole with a pipe, first grout the temporary packer and then remove the temporary grouting hose. The pipe that the packer is configured to Put the discharge hose inside The application of the grouting subject by inserting the grouting subject in a different order for the grouting is suitable when the elution pressure is low in the punching hole and when the gel time requires a curing time in the temporary packer.

상기 임시 팩커(4)와 본 팩커(5)가 구성된 파이프는 파일럿 터널에서 천공한 홀의 본 터널 예정 굴착선 부위에 위치하여 그라우팅을 하게 된다. The pipe composed of the temporary packer 4 and the bone packer 5 is The grouting will be located at the site of the scheduled tunnel of the main tunnel of the hole drilled in the pilot tunnel.

물론, 파일럿 터널과 본 터널 사이에도 절리가 많아 그라우팅의 필요성이 있을 때에는 본 팩커(5)를 파일럿 터널의 굴착면에 설치하면 된다. Of course, when there are many joints between the pilot tunnel and the main tunnel and there is a need for grouting, the present packer 5 may be installed on the excavation surface of the pilot tunnel.

임시 팩커(4)는 내부에 급결형 우레탄을 주입하는 데 우레탄은 주제와 경화제를 별도의 호스로 이송하여 Y자관으로 합류시켜 주입하거나 미리 주제와 경화제를 섞어서 하나의 호스로 주입한다.Temporary packer (4) is injected into the urethane-type urethane inside the urethane transfers the main body and the curing agent in a separate hose to join the Y-shaped pipe or inject the main body and the curing agent in advance in a single hose.

여기에 사용되는 임시 팩커(4)는 부직포 등을 원통형 포대로 만들어 내부에 임시 펙커 내부 주입 호스를 삽입하고 토출 호스(8), 주주입 호스를 관통시키고 양단을 묶어서 사용한다. 이때, 팩커 내부에 팩킹 주입액이 세로로 설치된 경우 호스와 선지보재 틈으로 겔타임 전에 흘러내리게 되어 외부로 발포되는 문제점이 있다. 이를 개선하기 위하여, 포대의 묶은 틈을 에폭시 또는 실리콘으로 막아 사용한다.The temporary packer 4 used here is made of a non-woven fabric or the like as a cylindrical bag, and inserts an internal injection hose inside the temporary packer, passes through the discharge hose 8, the main injection hose, and binds both ends. In this case, when the packing injection liquid is installed vertically inside the packer, there is a problem in that the fluid flows out before the gel time into the gap between the hose and the preservation material and foams to the outside. To remedy this, the enclosed cracks of the bag are covered with epoxy or silicone.

본 팩커(5)가 구성된 파이프는 천공홀 심부측 파이프에 본 팩커(5)가 외부에 정착되고 파이프 선단은 선지보재(3) 주입 파이프와 임시 팩커(4)의 내부 주입 그라우팅 호스, 천공홀 내 토출 호스(8)가 연결되도록 구성되고 이 호스는 파이프 내부를 통하여 외부의 그라우팅 펌프와 배수로로 연결된다. The pipe in which the bone packer 5 is configured is fixed to the core pipe of the drilled hole, and the bone packer 5 is fixed to the outside, and the pipe tip is inside the grouting hose 3 and the internal injection grouting hose of the temporary packer 4, in the hole. The discharge hose 8 is configured to be connected, which is connected to the external grouting pump and drainage through the pipe.

상기 팩커가 정착된 파이프는 그라우팅을 위한 작업 과정에서 천공홀 내에서 이탈되지 않도록 천공홀 입구측 파이프의 외부에 스토퍼를 설치한다. The pipe on which the packer is fixed is installed with a stopper on the outside of the pipe at the inlet of the drill hole so as not to be separated from the drill hole during the grouting process.

스토퍼는 파이프 외측에 삼각으로 가시발이 너트를 조임에 따라 외측으로 벌어지면서 천공홀 외벽을 가압하게 되므로 파이프는 천공홀에 지지되어 이탈되지 않는다. The stopper is triangular to the outside of the pipe, and as the claws open outwards as the nut tightens, the pipe is pressurized to the outer wall, so that the pipe is supported by the hole and does not escape.

상기 선지보재(3)와 팩커로 구성된 파이프와 같은 선재는 양축의 회전 바퀴(26) 사이에 측면으로 삽입되어 물려서 회전력에 의해 용이하게 천공홀의 상향으로 삽입하거나 제거할 수 있는 장치이다. 상기 회전 바퀴(26)는 유압 모터(27)에 의해 회전 된다.The wire rod, such as a pipe consisting of the prop retainer (3) and the packer is inserted into the side between the rotating wheels 26 of both shafts is a device that can be easily inserted or removed upward of the drilling hole by the rotational force. The rotary wheel 26 is rotated by the hydraulic motor 27.

선재 삽입 장치(25)는 작업대(23)에 수평으로 회전하는 힌지(33)와 수직으로 회전하는 힌지(31)와 일정량 신축이 자유로운 신축 실린더(32)로 연결되어 강성이 있는 선재에 자유롭게 적응할 수 있는 파이프나 봉형 선재와 같은 선재 삽입 장치(25)이다.The wire rod inserting device 25 is connected to the hinge 33 that rotates horizontally on the worktable 23 and the hinge 31 that rotates vertically and the expansion and contraction free expansion cylinder 32 that can freely adapt to rigid wire rods. A wire insertion device 25 such as a pipe or rod-shaped wire rod.

상기 선재 삽입 장치(25)는 양축의 회전 바퀴(26)를 선단에 탄성 지압 스프링(30)이 장착되고 유압 호스(34)가 연결된 유압잭(28)으로 지압하는 구성으로 파이프나 봉형재와 같은 선재의 직경이 다소 변하여도 탄력적으로 구동하면서 회전하도록 하는 역할을 하도록 하였다. The wire rod inserting device 25 is configured to press the rotating wheels 26 of both shafts to the hydraulic jack 28 to which the elastic acupressure spring 30 is mounted at the front end and the hydraulic hose 34 is connected. Even if the diameter of the slightly changed to act to rotate while driving elastically.

1 : 본 터널 굴착선
2 : 파일럿 터널선
3 : 선지보재
4 : 임시 팩커
5 : 본 팩커

6 : 주입 호스 체크 밸브 6: infusion hose check valve
7 : 임시 팩커 주입 호스 7: temporary packer infusion hose
8 : 토출 호스 8: discharge hose
9 : 주입 호스 9: injection hose
21 : 천공홀 21: drilling hole
22 : 파이프 22: pipe
23 : 작업대 23: worktable
24 : 작업대차 24: work cart
25 : 선재 삽입 장치 25: wire rod insertion device
26 : 회전 바퀴 26: rotating wheel
27 : 유압 모터 27: hydraulic motor
28 : 유압잭 28: hydraulic jack
30 : 탄성 지압 스프링 30: elastic acupressure spring
31 : 수직 방향 회전 힌지 31: vertical rotation hinge
32 : 신축 실린더 32: expansion cylinder
33 : 수평 방향 회전 힌지 33: horizontal rotation hinge
34 : 유압 호스 1: main tunnel rig 34: hydraulic hose 1: main tunnel rig
2: pilot tunnel line 2: pilot tunnel line
3: Billboard treasure 3: Billboard treasure
4: temporary packer 4: temporary packer
5: bone packer 5: bone packer
6: injection hose check valve 6: injection hose check valve
7: temporary packer injection hose 7: temporary packer injection hose
8: discharge hose 8: discharge hose
9: infusion hose 9: infusion hose
21: drilling hole 21: drilling hole
22: pipe 22: pipe
23: working table 23: working table
24: work balance 24: work balance
25: wire rod inserting device 25: wire rod inserting device
26: spinning wheel 26: spinning wheel
27: hydraulic motor 27: hydraulic motor
28: hydraulic jack 28: hydraulic jack
30: Elastic Shiatsu Spring 30: Elastic Shiatsu Spring
31: vertical rotation hinge 31: vertical rotation hinge
32: telescopic cylinder 32: telescopic cylinder
33: horizontal rotation hinge 33: horizontal rotation hinge
34: hydraulic hose 34: hydraulic hose

Claims (11)

  1. 갱내 선지보 터널에서 파일럿 터널을 굴착 후, 본 터널을 향해 선지보재를 삽입하기 위한 천공홀을 시공 후 선지보재를 삽입 후 그라우팅하는 공법에 있어서,
    임시 팩커를 먼저 설치 후 본 팩커를 추가 설치하여 그라우팅 후 임시 팩커는 천공홀 내에 남겨두고 본 팩커만을 회수하여 재사용하는, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    In the method of excavating a pilot tunnel in the mine shaft tunnel tunnel, constructing a drilling hole for inserting the prop treasure toward the main tunnel, and then grouting after inserting the prop treasure,
    After the temporary packer is installed first, the packer is additionally installed, and after grouting, the temporary packer is left in the perforation hole and only the packer is recovered and reused.
  2. 갱내 선지보 터널에서 파일럿 터널을 굴착후 본 터널을 향해 선지보재를 삽입하기 위한 천공홀을 시공 후 선지보재를 삽입 후 그라우팅을 하는 공법에 있어서,
    압력 그라우팅 후, 팩커 제거시 그라우팅이 토출되는 것을 방지하기 위한 임시 팩커 선지보재에 설치하고 파일럿 터널 굴착면 천공홀 입구까지 삽입하는 단계,
    임시 팩커의 내부 주입 그라우팅 호스, 천공홀 주입 호스, 천공홀 내 토출 호스를 본 팩커가 구성된 파이프 선단에 각각 연결하는 단계,
    선지보재를 본 팩커가 구성된 파이프 선단에 연결하여 천공홀에 밀어넣는 단계,
    임시 팩커 내부에 주입액을 충진 주입 양생하는 것과 본 팩커를 작동하여 주주입재를 주입하는 단계,
    주입 완료 후 본 팩커가 구성된 파이프를 회수하는 단계로 이루어진, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법. A grouting method using a double packer in the Seonjibo tunnel, which consists of recovering the pipe consisting of this packer after injection is completed.
    In the method of grouting after inserting the preliminary treasure after constructing the drilling hole for inserting the preliminary treasure toward the main tunnel after excavating the pilot tunnel in the mine tunnel tunnel. In the method of grouting after inserting the preliminary treasure after constructing the drilling hole for inserting the preliminary treasure toward the main tunnel after excavating the pilot tunnel in the mine tunnel tunnel.
    After pressure grouting, the installation of temporary packer for preventing the grouting packer during the discharge to remove pre-support, and inserting the pilot tunnel to the entrance side perforations, After pressure grouting, the installation of temporary packer for preventing the grouting packer during the discharge to remove pre-support, and inserting the pilot tunnel to the entrance side perforations,
    Connecting the internal injection grouting hose of the temporary packer, the drilling hole injection hose , and the discharge hose in the drilling hole to the pipe tip configured with the packer, respectively, Connecting the internal injection grouting hose of the temporary packer, the drilling hole injection hose , and the discharge hose in the drilling hole to the pipe tip configured with the packer, respectively,
    Connect the bill of materials to the end of the pipe Connect the bill of materials to the end of the pipe Pushing into the drill hole, Pushing into the drill hole,
    Filling and curing the injection liquid into the temporary packer and operating the packer to inject the main injection material; Filling and curing the injection liquid into the temporary packer and operating the packer to inject the main injection material;
    A grouting method by a double packer in a sunbeam tunnel, comprising the steps of recovering the pipe the packer is configured after completion of the injection. A grouting method by a double packer in a sunbeam tunnel, comprising the steps of recovering the pipe the packer is configured after completion of the injection.
  3. 청구항 2에 있어서,
    상기 천공홀 주입 호스는 선단이 막힌 파이프의 선단측 외주면에 구멍이 형성되고, 상기 구멍을 원통 고무밴드로 채워 막고 원통 고무밴드는 파이프에 일단을 밴드로 고정한 체크 밸브 역할을 하는 것으로 임시 팩커를 관통하여 체크 밸브 부분이 천공홀 심부쪽으로 설치한, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    The method according to claim 2,

    The drill hole injection hose is formed with a hole in the outer peripheral surface of the tip side of the pipe is blocked, the hole is filled with a cylindrical rubber band and the cylindrical rubber band acts as a check valve fixed to one end of the pipe by a band to penetrate the temporary packer. The drill hole injection hose is formed with a hole in the outer peripheral surface of the tip side of the pipe is blocked, the hole is filled with a cylindrical rubber band and the cylindrical rubber band acts as a check valve fixed to one end of the pipe by a band to penetrate the temporary packer. Grouting method by double packer in sun beam tunnel where the check valve part is installed toward the center of the drilled hole. Grouting method by double packer in sun beam tunnel where the check valve part is installed toward the center of the drilled hole.
  4. 청구항 2에 있어서,
    상기 천공홀 토출 호스는 본 팩커가 구성된 파이프와 선지보재 임시 팩커를 관통하여 측면에 설치하여 천공홀 내로 공기와 물이 원활하게 배출되도록 한, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    The method according to claim 2,

    The drill hole discharge hose is installed on the side through the pipe and the pre-loaded temporary packer configured to pack the packer so that air and water can be smoothly discharged into the drilled hole, grouting method by a double packer in the pilot beam tunnel. The drill hole discharge hose is installed on the side through the pipe and the pre-loaded temporary packer configured to pack the packer so that air and water can be smoothly discharged into the drilled hole, grouting method by a double packer in the pilot beam tunnel .
  5. 청구항 2항에 있어서
    그라우팅이 토출되는 것을 방지하기 위한 임시 팩커 선지보재에 설치하고 천공홀에 삽입하는 단계에서 먼저 임시 팩커에 급결용 그라우팅을 한 후에 임시 그라우팅 호스를 제거하고 본 팩커가 구성된 파이프를 토출 호스를 내부로 넣어 추가 삽입하여 그라우팅주제를 압력 그라우팅하는 시공순서가 다른, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    The method according to claim 2

    Grouting is to install a temporary packer for preventing the discharge to the pre-supports and configured in the step of inserting in the hole before removing the temporary grouting hose after the class gyeolyong grouting a temporary packer and the present packer pipe into the discharge hose The grouting method by double packers in the tunnel beam, which differs in the order of construction for pressure grouting the grouting topics by adding additional inserts. Grouting is to install a temporary packer for preventing the discharge to the pre-supports and configured in the step of inserting in the hole before removing the temporary grouting hose after the class gyeolyong grouting a temporary packer and the present packer pipe into the discharge hose The grouting method by double packers in the tunnel beam, which differs in the order of construction for pressure grouting the grouting topics by adding additional inserts.
  6. 청구항 2에 있어서,
    파일럿 터널에서 천공한 홀의 본 터널 예정 굴착선 부근 위치에 임시 팩커와 본 팩커가 설치된, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    The method according to claim 2,

    Double packer grouting method in sunbeam tunnel, where temporary packers and bone packers are installed in the vicinity of the main tunnel scheduled excavation line of the hole drilled in the pilot tunnel. Double packer grouting method in sunbeam tunnel, where temporary packers and bone packers are installed in the vicinity of the main tunnel scheduled excavation line of the hole drilled in the pilot tunnel.
  7. 청구항 2에 있어서,
    임시 팩커에는 우레탄을 주입하는, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.
    The method according to claim 2,
    The grouting method by double packer in sun beam tunnel which injects urethane into temporary packer.
  8. 청구항 2에 있어서
    본 팩커가 구성된 파이프는 천공홀 심부측 파이프에 본 팩커가 외부에 정착되고 파이프 내부에 그라우팅에 필요한 토출 호스와 주입 호스가 삽입된, 선지보 터널에서 이중 팩커에 의한 그라우팅 공법.

    The method according to claim 2 The method according to claim 2
    The pipe with bone packer is a grouting method by double packer in sunbeam tunnel where the bone packer is settled outside and the discharge hose and injection hose necessary for grouting are inserted in the pipe in the deep hole of the drill hole. The pipe with bone packer is a grouting method by double packer in sunbeam tunnel where the bone packer is settled outside and the discharge hose and injection hose necessary for grouting are inserted in the pipe in the deep hole of the drill hole.
  9. 선지보재와 팩커가 구성된 파이프를 양축의 회전 바퀴 사이에 물려서 회전력에 의해 용이하게 삽입할 수 있는, 유압식 선재 삽입 장치.
    A hydraulic wire inserting device which can be easily inserted by rotational force by being clamped between the rotating wheels of both shafts.
  10. 청구항 9에 있어서
    파이프 삽입 장치는 작업대에 수평으로 회전하는 힌지와 수직으로 회전하는 힌지와,

    일정량 신축이 자유로운 실린더로 연결되어 강성이 있는 선재에 자유롭게 적응할 수 있는, 유압식 선재 삽입 장치. A hydraulic wire rod insertion device that can be freely adapted to rigid wire rods by connecting a certain amount of expansion and contraction free cylinders.
    The method according to claim 9 The method according to claim 9
    The pipe insertion device includes a hinge that rotates horizontally and a hinge that rotates vertically, The pipe insertion device includes a hinge that rotates horizontally and a hinge that rotates vertically,
    Hydraulic wire inserting device that can be freely adapted to rigid wires by connecting a certain amount of expansion and contraction with free cylinders. Hydraulic wire inserting device that can be freely adapted to rigid wires by connecting a certain amount of expansion and contraction with free cylinders.
  11. 청구항 9에 있어서,
    양축의 회전 바퀴를 선단에 탄성 지압 스프링이 장착된 유압잭으로 지압하는, 유압식 선재 삽입 장치.

    The method according to claim 9,
    A hydraulic wire inserting device which presses both rotating wheels with a hydraulic jack equipped with an elastic shiatsu spring at the tip.

KR1020100076222A 2010-08-09 2010-08-09 Method of grouting by double packer in pre-stressed tunnel KR101251240B1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590840A (en) * 2013-11-29 2014-02-19 王威 Floor grouting method
CN108533272A (en) * 2018-03-30 2018-09-14 贵州省公路工程集团有限公司 A kind of minimum clear-distance tunnel goes out cavity construction method
CN108756932A (en) * 2018-07-05 2018-11-06 西南交通大学 A kind of method for tunnel construction of new supporting structure
CN108798704A (en) * 2018-07-05 2018-11-13 西南交通大学 A kind of rock stratum active support and change method suitable for underground engineering construction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3112748B2 (en) * 1992-07-31 2000-11-27 前田建設工業株式会社 Self-piercing mini pipe roof construction method
JP2504151Y2 (en) * 1993-10-15 1996-07-10 賢二 梶原 PC steel material insertion device
KR100740200B1 (en) * 2004-11-29 2007-07-18 서동현 Tunnelling method using pre-support concept and an adjustable apparatus thereof
KR100807258B1 (en) * 2006-05-10 2008-02-28 임사인 Steel tube inserting apparatus having a plural of packers and grouting execution method using thereof

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590840A (en) * 2013-11-29 2014-02-19 王威 Floor grouting method
CN108533272A (en) * 2018-03-30 2018-09-14 贵州省公路工程集团有限公司 A kind of minimum clear-distance tunnel goes out cavity construction method
CN108756932A (en) * 2018-07-05 2018-11-06 西南交通大学 A kind of method for tunnel construction of new supporting structure
CN108798704A (en) * 2018-07-05 2018-11-13 西南交通大学 A kind of rock stratum active support and change method suitable for underground engineering construction
CN108756932B (en) * 2018-07-05 2020-04-21 西南交通大学 Tunnel construction method comprising supporting structure

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