Construction method for bailing out stuck single-shield tunnel boring machine

A construction method and single-shield technology, applied in earthwork drilling, shaft equipment, wellbore lining, etc., can solve the problems of inconvenient construction in front of the cutter head, increased construction difficulty, increased risk factor, etc., to save cost and time, Fewer construction steps, high safety effect

Pending Publication Date: 2021-03-16
CHINA RAILWAY 19TH BUREAU GRP 1ST ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method is simpler and more effective than the previous method of escape, the workload of this method is large, and the risk factor increases because it needs to cross the landslide area to construct in front of the cutterhead, and the construction in front of the cutterhead is extremely inconvenient, which increases the difficulty of construction

Method used

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  • Construction method for bailing out stuck single-shield tunnel boring machine
  • Construction method for bailing out stuck single-shield tunnel boring machine
  • Construction method for bailing out stuck single-shield tunnel boring machine

Examples

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Embodiment 1

[0024] Embodiment 1: as figure 1 , 2 , 3, and 4, including the following steps:

[0025] 1. Arrange hollow anchor pipe grouting behind the shield to consolidate the surrounding rock in the operation area;

[0026] 2. Expand the excavation and replace the arch support in the working area of ​​the pipe shed drilling rig;

[0027] 3. Build an advanced pipe shed to the front of the tunnel face and the area affected by the landslide;

[0028] 4. Excavate pilot holes on both sides of the left and right shields;

[0029] 5. Manually clean the slag accumulated in the landslide area in front of the cutter head in the cutter head and through the guide holes on both sides;

[0030] 6. Clean up the collapsed debris in front of the cutter head until the cutter head can rotate normally, and the TBM can solve the problem; step 4 can be operated simultaneously with steps 1, 2 and 3.

[0031] Wherein, in the first step, its specific operation is as follows: the first hollow anchor pipe 22...

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Abstract

The invention discloses a construction method for bailing out a stuck single-shield tunnel boring machine. The construction method is invented mainly for solving the problems that an existing TBM escape method is complex and involves a large workload. The method comprises the following steps that a hollow anchor pipe is arranged behind a shield for grouting, and surrounding rock of an operation area is solidified; expanding excavation and arch replacement supporting are conducted on a pipe roof drilling machine working area; an advanced pipe shed is constructed in a collapse influence area infront of a tunnel face; pilot tunnels are excavated in the two sides of a shield; accumulated slag in a collapse area in front of a cutterhead is manually cleaned in the cutterhead and through pilot tunnels in the two sides; and collapsed slag in front of the cutter head is cleaned until the cutter head can rotate normally, and the tunnel boring machine is saved. The method has the advantages thatthe operation of bailing out the tunnel boring machine is safe, the stuck tunnel boring machine can be released in an extremely short time, and the cost and the time are saved.

Description

Technical field: [0001] The invention relates to a trouble-free construction method, in particular to a trouble-free construction method for a single-shield TBM stuck machine. Background technique: [0002] At present, in the construction process of large and long tunnels, TBMs are widely used for excavation for the sake of high efficiency, environmental protection and safety. However, due to geological influences, when excavation construction passes through unfavorable geological sections, the surrounding rock is often extremely weak and broken, causing the TBM to be stuck. After some TBM jamming accidents occurred, the TBM was forced to abandon the TBM and reroute due to the failure of the TBM to get out of trouble, which caused great losses. [0003] Disclosed in CN105781562A is the invention patent titled "the method for getting rid of the stuck machine during tunnel boring machine construction"; 2. The shield of the tunnel boring machine adopts an inner and outer two-...

Claims

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Application Information

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IPC IPC(8): E21D9/08E21D20/02E21D11/14E21D11/18
CPCE21D9/08E21D20/02E21D20/025E21D11/14E21D11/18Y02E10/20
Inventor 余情园吕海明王家海李宏伟李鹏邓斌连凯徐健程永丰张涛
Owner CHINA RAILWAY 19TH BUREAU GRP 1ST ENG
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