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Shield ground compartment opening method

A ground and shield technology, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., can solve the problems of low safety factor, large body injury, and complicated procedures, so as to ensure safety, prevent water and soil influx, and have high promotion value Effect

Active Publication Date: 2015-05-13
CHINA RAILWAY NO 3 GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has many procedures, long construction period, and high cost. At the same time, people working in a high-pressure environment will cause great harm to the body.

Method used

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  • Shield ground compartment opening method
  • Shield ground compartment opening method
  • Shield ground compartment opening method

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Embodiment Construction

[0025] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.

[0026] The method of opening a position on the shield ground, the steps are as follows:

[0027] (1) For the construction stratum, pre-calculate the wear amount of the cutter head and the position where the tool needs to be changed, that is, the preset opening position;

[0028] (2) Use stirring piles or rotary grouting piles in advance to complete the wall construction of the peripheral wall according to the set opening peripheral wall size at the preset opening position;

[0029] (3) Seal the bottom by double-fluid grouting to form a box with an upper end open, and pump out groundwater in the box formed by mixing piles and grouting;

[0030] (4) The shield continues to push through the wall formed by the mixing pile, and the head enters the box formed by the mixing pile and grouting, and the gap between the shield and the wall is blocked by ...

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Abstract

The invention belongs to shield construction fields such as metro shield tunnels and hydraulic engineering shield tunnels, particularly relates to a shield ground compartment opening method, and solves the problems of the existing passive compartment opening methods. The method includes: presetting a compartment opening position; building a peripheral wall; grouting with double slurry for bottom sealing; advancing shield continuously to penetrate the wall formed by mixing piles; drilling a hole on the ground to a cutter head of the shield; placing a seal gate type steel protective cylinder; and opening the seal gate for maintenance or replacement. The method can be performed along with shield construction, shield advancing is unaffected, and construction period is shortened greatly. The method is performed under normal pressure, so that safety of constructers is guaranteed. The method is clear in process, simple, practicable, easy to operate and popularize, outstanding in economical and social benefits in the field of tunnel construction, and worthy of popularization.

Description

technical field [0001] The invention belongs to the field of shield construction such as subway shield tunnels and water conservancy project shield tunnels, and in particular relates to a shield tunnel opening method on the ground. Background technique [0002] As an advanced automatic machine for tunnel excavation, the shield machine has been widely used after being introduced into China. At present, the tunnel construction of most subway projects and civil engineering projects such as water conservancy cannot do without the participation of the shield machine. During the shield construction process, especially In the process of interval construction, due to geological conditions, mechanical failures and other reasons, it is necessary to open the warehouse to replace parts or perform maintenance operations, so the rapid and safe opening of the warehouse has become one of the main risk sources of the current shield construction, and the use of shield tunnels is becoming more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06
Inventor 辛振省
Owner CHINA RAILWAY NO 3 GRP CO LTD
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