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Compound stratum shield residual soil improvement construction system and method

A technology of muck soil improvement and composite stratum, which is applied in the direction of earth cube drilling, mining equipment, tunnels, etc., can solve the problems of shield cutter damage, full tunneling speed, ground collapse, etc., to reduce maintenance costs, increase tunneling speed, and better The effect of protection

Inactive Publication Date: 2018-10-12
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies existing in the prior art, the present invention provides a construction system and a construction method for the improvement of shield tunneling muck in composite strata, which solve the problems existing in the prior art such as high tunneling speed, serious damage to the shield cutter, and ground collapse accident problem

Method used

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  • Compound stratum shield residual soil improvement construction system and method
  • Compound stratum shield residual soil improvement construction system and method

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Embodiment approach

[0041] The specific implementation method, in the above step (6), first open the door of the soil bin in the man gate, observe the soil condition in the bin, use steel brazing to drill multiple holes, and observe whether there is gushing phenomenon, if there is no gushing phenomenon and the condition of the tunnel surface If it is stable, the soil in the soil bin will be manually cleaned directly, and the cleaning sequence is from left to right and from top to bottom. Use chisel removal devices for warehouse clearance, such as picks and shovels, use woven bags to pack the soil, send it to the belt conveyor manually, and then send it to the muck truck by belt conveyor. , Try not to disturb the soil at the opening of the cutter head and the incision ring, if some places are over-chiseled during the chisel removal process. Immediately block it with quick-hardening cement. When cleaning the ball valve at 9 o'clock, clean the soil around the ball valve, and connect the exhaust fan ...

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Abstract

The invention relates to the technical field of building construction, in particular to a compound stratum shield residual improvement construction system and method. The compound stratum shield residual improvement construction system comprises a bentonite system and a foam injection system, and further comprises a soil bin replacement tool changing system; the soil bin replacement tool changingsystem is combined with the bentonite system and the foam injection system, after a foam injection solution and bentonite slurry are stirred and mixed, a tool can be replaced, the replacement time isshortened, and the tunneling speed is effectively guaranteed. A foaming agent, P1 polymer and coal ash are mixed to enable shield cutting residual soil to have good flow plasticity, consistence, low water permeability and small frictional resistance.

Description

technical field [0001] The invention relates to the technical field of building construction, and more specifically, relates to a construction system and a construction method for improving shield tunneling muck in composite strata. Background technique [0002] Slag improvement is to inject water, foam, bentonite, high molecular polymer and other additives into the surface of the cutterhead, the soil bin or the screw conveyor through the special device configured by the shield, and use the rotary stirring of the cutter head, the soil bin stirring device or the screw The conveyor selects stirring to mix the additives with the soil slag, so that the slag cut by the shield machine has good flow plasticity, suitable consistency, low water permeability and small frictional resistance. Muck soil improvement is an important means to ensure safe, smooth and rapid shield tunneling construction. It can improve the anti-seepage ability of the dregs in the soil bin, avoid large surface...

Claims

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Application Information

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IPC IPC(8): E21D9/08E21D9/06
CPCE21D9/0678E21D9/08
Inventor 李宏飞张隽赵香萍赵峰峰李晓
Owner CHINA RAILWAY 12TH BUREAU GRP
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