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A method for shield receiving and lateral translation hoisting in the air duct of underground excavation station

A lateral translation and air duct technology, which is used in tunnels, earth-moving drilling, mining equipment, etc., can solve the problems of inconvenient installation, disassembly and maintenance, inconvenient processing and manufacturing, and complex structural settings, so as to reduce the impact, speed up the progress, and overcome the traffic problems. Guiding difficult effects

Active Publication Date: 2020-10-30
POWERCHINA RAILWAY CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] None of the above invention patent applications can solve the problem of safely and conveniently hoisting the shield machine out of the well in the subway construction of the bustling road section, and there are defects such as complex structure setting, inconvenient processing and manufacturing, high manufacturing cost, and inconvenient installation, disassembly and maintenance.

Method used

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Examples

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Effect test

Embodiment Construction

[0048] The concrete steps of method of the present invention are as follows:

[0049] Step 1, construction underground excavation of air duct

[0050] Step 1.1, using the CRD construction method, the air duct is divided into 5 layers, and three air duct guide holes are designed for each layer, and the air duct guide holes are layered and excavated step by step from top to bottom. For the air duct guide tunnel on each floor, the air duct guide tunnels on both sides are first excavated; the air duct guide tunnel adopts the upper and lower steps method to reserve the core soil for excavation; the grid steel frame is constructed, and the initial stage of mesh anchor spraying is carried out. support.

[0051] Step 1.2, Grouting and strengthening the shield end in the air duct

[0052] After the excavation of the air duct is completed, horizontal grouting is carried out on the end of the shield machine in the air duct, and a depth of 3.5m is drilled at the upper, middle, lower, le...

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Abstract

The invention relates to a method for shield receiving and lateral horizontal-moving lifting-out in an air flue of an underground excavation station. The method comprises the following specific construction steps: 1, the underground excavation air flue is constructed; 2, shield receiving is conducted; 3, a front shield of a shield machine and a middle shield of the shield machine are separated; 4,the front shield of the shield machine and a cutterhead are transversely moved and rotated to be lifted out; 5, a shield tail of the shield machine is disengaged from a segment; 6, the shield machineis separated from a rear supporting trolley; 7, the middle shield of the shield machine is transversely moved and rotated to be lifted out; 8, a tail shield of the shield machine is transversely moved and rotated to be lifted out; and 9, the rear supporting trolley is dismantled. The method has the superior effects that the pending technical problem that up to now, shield machine lifting-out wells cannot be arranged at the two ends of the underground excavation station in a city busy road section to lift out a shield from an underground construction well is solved, the traffic pressure of a city is significantly relieved, and a pioneering design method is provided for design of adjacent intervals of the underground excavation station.

Description

technical field [0001] The invention relates to a shield tunneling machine in an air duct of a buried station, and more specifically relates to a method for receiving and laterally moving and lifting out a shield machine in an air duct of a buried station. Background technique [0002] With the rapid development of China's urban subway construction, there are more and more construction methods for subway stations. In order to reduce the pressure on urban traffic on urban arterial roads, underground excavation station construction methods will become the first design scheme for future subway construction. Therefore, which construction method to use for the sections at both ends of the underground excavation station can be completed more safely and quickly, entirely depends on whether the shield can come out of the underground excavation station, which is the key to the selection of the shield tunneling scheme. The present invention provides a solution The shield machine is re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08
CPCE21D9/06E21D9/08
Inventor 毛宇飞
Owner POWERCHINA RAILWAY CONSTR
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