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Construction method of strata reinforcement before shield cutterhead opening

A construction method and shield cutter head technology, which can be applied to earth drilling, underground chambers, shaft equipment, etc., and can solve problems such as inability to complete the vertical reinforcement of the ground

Active Publication Date: 2022-03-04
中建八局轨道交通建设有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the prior art, provide a construction method for ground reinforcement before the shield cutter head is opened, and solve the problem that the existing buildings on the ground make it impossible to complete the vertical soil reinforcement on the ground

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  • Construction method of strata reinforcement before shield cutterhead opening
  • Construction method of strata reinforcement before shield cutterhead opening
  • Construction method of strata reinforcement before shield cutterhead opening

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] refer to figure 1 , The present invention provides a construction method for ground reinforcement before the shield cutter head is opened, which is used to solve the problem that the ground vertical soil reinforcement cannot be completed due to the existence of existing structures on the ground. The construction method of the present invention adopts the cross passage as the working surface of the reinforced soil construction, and the cross passage is arranged above the tunnel formed by the tunneling of the shield machine. The bottom of the cross channel is reinforced by drilling and grouting, which avoids the existing structures on the ground and solves the problem that the ground cannot be reinforced vertically. And the construction of soil reinforcement using the transverse channel can be pre-constructed, that is, the soil reinforcem...

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Abstract

The invention relates to a construction method for ground reinforcement before a shield cutter head is opened, comprising the following steps: constructing a cross passage at the designed tool change position of a shield machine, and the formed cross passage is located at the shield machine to be excavated and formed above the tunnel; and a grouting hole is constructed at the bottom of the transverse channel corresponding to the position where the shield machine is to pass, and grouting is carried out into the grouting hole to form a reinforcement pile, thereby utilizing the formed reinforcement The piles reinforce the soil at the location where the TBM is to pass. The present invention uses the transverse channel as the construction work surface for strengthening the soil, and the bottom of the transverse channel corresponds to the soil in front of the cutter head of the shield machine, so as to ensure the construction safety of the cutter head. It solves the problem that the existing buildings on the existing ground affect the vertical reinforcement of the ground.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a construction method for ground reinforcement before a shield cutter head is opened. Background technique [0002] During the long tunneling process of the shield tunneling machine, it is inevitable that the cutter head of the shield machine will be worn out and the cutter needs to be opened halfway to change the tool. Normally, the vertical reinforcement of the ground above the cutter head of the shield machine can be completed, but most shield tunneling It will pass through urban roads, ground buildings or structures. Under such conditions, it is impossible to complete the demand for ground vertical reinforcement. Contents of the invention [0003] The purpose of the present invention is to overcome the defects of the prior art, provide a construction method for ground reinforcement before the shield cutter head is opened, and solve the problem that the existing bui...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/06E21D11/10
CPCE21D9/001E21D11/10E21D9/0671
Inventor 王孟龙耿晓亮姚文杰彭嵚杜亚非郑永杰骆小芳付智多
Owner 中建八局轨道交通建设有限公司
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