Equipment and method for synchronous thaw settlement grouting during unfreezing

A technology of melting and sinking grouting and grouting, applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems of high construction risk, tunnel deformation, body settlement, etc., and achieve the effect of reducing risks and shortening the construction period.

Inactive Publication Date: 2019-01-25
CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a device and method for synchronous thawing and grouting during thawing to solve the problems of uneven ground settlement, tunnel deformation and body settlement, and high construction risk when the pipe curtain is thawed

Method used

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  • Equipment and method for synchronous thaw settlement grouting during unfreezing
  • Equipment and method for synchronous thaw settlement grouting during unfreezing
  • Equipment and method for synchronous thaw settlement grouting during unfreezing

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Embodiment Construction

[0024] Such as Figure 1-3 As shown, a device and method for synchronous thawing and grouting during thawing uses pipe curtains to pre-support frozen soil. The pipe curtains are composed of 36 numbered steel pipes 1 from No. 1 to No. 36, and the odd-numbered pipes are filled with concrete The actual pipes, the even pipes are empty pipes, and the even numbers are the main construction areas for grouting in the later stage; 36 numbered steel pipes 1 divide the permafrost area into A frozen area 2, B frozen area 3 and C frozen area 4, and the The numbered steel pipes 1 in the A freezing area 2 are No. 1-6 and No. 32-36, the numbered steel pipes 1 in the B freezing area 3 are No. 7-12 and 26-31, and the C freezing The numbered steel pipes 1 in zone 4 are No. 13-25.

[0025] There are symmetrical jacking pipes 7 inside the permafrost, and two sets of grouting machines 5 are arranged in the working wells on both sides. The grouting pumps in the grouting machines 5 are hydraulic dou...

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Abstract

The invention discloses equipment and a method for synchronous thaw settlement grouting during unfreezing. The equipment and the method are characterized in that frozen earth is pre-supported by pipecurtains, each pipe curtain comprises 36 steel pipes with the serial numbers from No. 1 to No. 36, a frozen earth region is divided into a frozen region A, a frozen region B and a frozen region C by every 36 corresponding steel pipes with the serial numbers, jacking pipes in the frozen regions A start to be synchronously cleaned before three-lining structures of tunnels are completely constructed,then circulating hot brine is turned on to gradually forcibly unfreeze the frozen regions A and the frozen regions C, then the frozen regions B are naturally unfrozen, the temperatures of temperaturemeasuring pipes in frozen pipes and settlement of earth surfaces are timely monitored during unfreezing, grounding is carried out according to monitored data, grouting machines of work wells on two sides of the equipment are synchronously turned on, every two symmetric jacking pipes are synchronously grouted, and grouting regions of earth facing sides of the jacking pipes are synchronously grouted. The equipment and the method have the advantages that grouting can be simultaneously synchronously carried out, the equipment and the method are short in synchronous thaw settlement grouting construction period during unfreezing, the method is safe and reliable, and risks of settlement of the ground and tunnel bodies in unfreezing procedures can be effectively reduced.

Description

technical field [0001] The invention relates to the field of moving tunnel construction, in particular to a device and method for synchronous thawing and grouting during thawing. Background technique [0002] With the rapid development of China's economy and the acceleration of urbanization, various forms of tunnels are constantly being constructed. It is inevitable to build tunnels with super large cross-sections and shallow buried tunnels, which is also a huge challenge for modern construction technology. For example, the Gongbei Tunnel of the Zhuhai Link of the Hong Kong-Zhuhai-Macao Bridge is a controlling project of the Zhuhai Link. The underground excavation section is a two-way six-lane tunnel with upper and lower layers, passing through the restricted area of ​​the Gongbei Port. Two working wells are set up. The geological conditions are complex. The surrounding environment is sensitive, and the tunnel is supported by tertiary composite lining. After the construction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
CPCE21D9/001
Inventor 潘建立史鹏飞刘应亮郭凤雨崔玉强蒋峰峰甄孟芹金鑫马会力
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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