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Light-section mud shield powder fine sand layer receiving method

A receiving method and technology of shield powder, which can be used in earth-moving drilling, mining equipment, tunnels, etc., and can solve problems such as bad social impact, water and sand gushing, and ground subsidence.

Inactive Publication Date: 2011-02-16
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Shield tunnels, especially in saturated silt and fine sand layers, are prone to water gushing and sand gushing, and large-scale ground subsidence, causing extremely bad social impacts

Method used

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  • Light-section mud shield powder fine sand layer receiving method
  • Light-section mud shield powder fine sand layer receiving method
  • Light-section mud shield powder fine sand layer receiving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] 1. Technical preparation

[0035] 1. On the basis of maintaining the balance of water and soil pressure inside and outside the well, simulate the situation when the shield machine is excavating down the river to carry out the design of sand filling and irrigation, so as to ensure that there is no water and sand gushing during the breakthrough.

[0036] 2. In order to enable the shield machine to smoothly cut the diaphragm wall, reduce the shield propulsion resistance, and facilitate the position determination of the shield machine, the diaphragm wall within the opening range can be chiseled manually or by other means. The length of the continuous wall is determined based on the purpose of achieving smooth cutting of the shield, reducing the resistance of the shield to advance, and facilitating the determination of the position of the shield. In this embodiment, the length of the continuous wall is 30 cm.

[0037] 3. After the cutterhead cuts into the continuous wall fo...

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Abstract

The invention discloses a light-section mud shield powder fine sand layer receiving method, which comprises the following steps of: preparing technology; embedding an injection pipe at an opening; mounting a cord fabric rubber plate and a pressing plate; constructing a temporary tunnel portal; installing a receiving facility; refilling sand and recharging water; shielding to reach a front measuring state; reinforcing duct pieces; and pushing the shield, assembling the duct pieces and recharging mortar in the tunnel. The method has the advantages of high operability and good social and economic benefits.

Description

technical field [0001] The invention relates to a method for receiving silt and fine sand layers of a small-section mud-water shield. Background technique [0002] With the continuous deepening of urban rail transit construction, the application of shield tunneling technology in the field of underground engineering is becoming more and more extensive. At the same time, the underground pipe network and existing tunnels are becoming more and more dense, and the environmental and geological conditions faced by shield tunneling construction are also more complex. , the difficulty and risk of shield tunneling construction are increasing. The risk prevention and technical management of tunnels and complex underground engineering construction projects in China have made great progress in both theoretical research and practical application. [0003] Shield entrance and exit holes are the key process of shield tunnel construction. The quality of the construction technology in this p...

Claims

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Application Information

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IPC IPC(8): E21D9/06
Inventor 谢仁根马小汀陈庆怀蒋卓许金林王春强杨成春
Owner ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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