Soil stabilization structure and method for railway yard shield tunneling construction

A railway station yard and soil reinforcement technology, which is applied in earthwork drilling, wellbore lining, tunnel lining, etc., can solve the problems of shield tunnel crossing danger, achieve the effect of facilitating crossing construction, improving strength and self-stability

Inactive Publication Date: 2014-06-18
中铁二十五局集团轨道交通工程有限公司 +1
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Under harsh geological conditions such as silt layers, sandy pebble layers, and water-bearing strata, it is very dangerous for shield tunnels to cross railway yards

Method used

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  • Soil stabilization structure and method for railway yard shield tunneling construction
  • Soil stabilization structure and method for railway yard shield tunneling construction

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Embodiment Construction

[0010] A soil reinforcement structure for shield tunneling through railway yard construction, such as figure 1 , the grouting hole 1 is set on both sides of the platform and extends obliquely downward to a position below four meters from the bottom of the railway line. The grouting hole 1 on one side is arranged in a plum blossom shape, as shown in figure 2 , the sleeve valve tube 2 is inserted into the grouting hole, and the sleeve valve tube is filled with double liquid slurry mixed with cement and water glass, which is condensed into a reinforcing rod in the sleeve valve tube, and the slurry is diffused outward from the slurry outlet of the sleeve valve tube A grout diffusion ball 4 that is fixedly connected to the sleeve valve tube and the reinforcing rod inside the sleeve valve tube is formed, and the two parts of the grout diffusion ball adjacent to the sleeve valve tube are overlapped and connected together; the grouting holes on both sides are parallel and staggered, a...

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Abstract

The invention discloses a soil stabilization structure and method for railway yard shield tunneling construction. Grouting holes stretching into the bottom of a rail track obliquely are formed in the two sides of a platform, double liquid grout contained in a sleeve valve pipe in each grouting hole condenses to form a reinforcing rod and a grout connecting ball outside the reinforcing rod, the grouting holes in each side are quincuncial, the grouting holes in the two sides are arranged in parallel in a staggered mode, every two adjacent grout connecting balls on the same side are connected, the grout connecting balls on the two sides are connected to form an integrated stereo netty structure, and then a stereo netty reinforcing structure is formed for the soil under the rail track, the strength and self-stability of the soil are improved, and shield tunneling construction is facilitated.

Description

technical field [0001] The invention relates to a soil body reinforcement structure and method in tunnel construction, in particular to a soil body reinforcement structure and method for the construction of a shield tunnel passing through a railway station. Background technique [0002] With the rapid development of urban rail transit construction, shield tunneling often needs to pass through dense buildings, existing railway lines, or near permanent buildings and municipal public facilities that must be protected. In these cases, Subsidence and displacement must be strictly controlled. Avoid disasters such as ground collapse, excessive ground subsidence, and ground displacement caused by shield construction, which pose a threat to the safety of surrounding buildings, underground structures, and pipelines. [0003] In large-scale railway stations, trains pass frequently in the stations. In order not to affect railway operations, during the construction of shield tunnels, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D9/06
Inventor 程杰田天长徐波田慧生任国阳沈炜东曾利民彭健蔡文胜曾克诚邹世涛符望春王海波
Owner 中铁二十五局集团轨道交通工程有限公司
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