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Method for replacing main drive seal of slurry shield in complex stratum

A technology of complex strata and muddy water shield, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problem of lack of replacement of the main drive seal, and achieve the effect of reducing replacement risk and improving safety and efficiency.

Active Publication Date: 2015-04-29
SHANGHAI TUNNEL ENG CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defects existing in the prior art, a method for replacing the main drive seal in the muddy water shield in complex formations is now provided to solve the problem of lack of replacement of the main drive seal in complex formations in the existing technical solutions

Method used

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  • Method for replacing main drive seal of slurry shield in complex stratum
  • Method for replacing main drive seal of slurry shield in complex stratum
  • Method for replacing main drive seal of slurry shield in complex stratum

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Embodiment Construction

[0025] In order to facilitate the understanding of the structure of the present invention, the following description will be made in conjunction with the accompanying drawings and embodiments.

[0026] refer to figure 1 As shown, the present invention provides a method for replacing the main drive seal of a muddy water shield in complex formations, comprising the following steps:

[0027] S1, setting multiple reinforced MJS piles on the advancing axis of the shield tunnel through the MJS construction method to form a reinforced area;

[0028] S2, pushing the cutter head of the shield machine into the reinforcement area;

[0029] S3, setting the inlet pressure as the groundwater head pressure;

[0030] S4, performing the operation of replacing the seal of the main drive under the pressure of entering the chamber.

[0031] Specifically, in step S1 and step S2, please refer to figure 2 , image 3 , Figure 4 and Figure 5 , figure 2 A plan view of the reinforcement area...

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Abstract

The invention provides a method for replacing the main drive seal of a slurry shield in a complex stratum. The method comprises the following steps: arranging a plurality of reinforced MJS (Metro Jet System) piles on the propelling axis of a shield tunnel to form a reinforced area; propelling a cutter head of a shield machine into the reinforced area; setting the storehouse entry pressure as the underground head pressure; replacing the main drive seal under the storehouse entry pressure. By adopting the method, the problem of lack of replacement of the main drive seal in the complex stratum in the existing technical scheme is solved, the replacement risk of the main drive seal is lowered greatly, and the safety and efficiency of main drive seal replacement construction are improved.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a method for replacing a main drive seal of a mud-water shield in complex formations. Background technique [0002] With the rapid development of urban municipal construction and rail transit, underground space has been continuously developed and utilized. Large-diameter mud-water shield tunneling method is more and more used in urban road and subway construction. Such tunnel projects have long-distance , tight schedule and difficult construction. As the main drive seal is a part that may be damaged by the muddy water shield, once a problem occurs, it is difficult to repair. [0003] Most of the existing technical solutions rely on the background of small-diameter earth pressure balance shields, and there are few solutions for super-large-diameter mud-water balance shields to replace the main drive seal, and the existing technical solutions are generally under normal pressu...

Claims

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Application Information

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IPC IPC(8): E21D9/06
CPCE21D9/06E21D9/08
Inventor 罗赛楠黄德中王金一张轶张亮王旋东蒋健卢康明牛恒栓张伟丰平
Owner SHANGHAI TUNNEL ENG CO LTD
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