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WSS Grouting Reinforcement Assisted Pneumatic Tool Change Method in Shield Tunnel

A technology of grouting reinforcement and shield tunneling, which is applied to tunnels, earthwork drilling, mining equipment, etc., to achieve reasonable design, safe drilling process, and enhanced stability

Active Publication Date: 2017-06-16
CHINA RAILWAY FIRST GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to design a method with simple steps, reasonable design, easy operation, high safety factor, and good use effect. The WSS grouting reinforcement assisted pneumatic tool change method in the shield tunnel can effectively solve the problem of the shield machine when there is no reinforcement space on the ground. Tool change problem

Method used

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  • WSS Grouting Reinforcement Assisted Pneumatic Tool Change Method in Shield Tunnel
  • WSS Grouting Reinforcement Assisted Pneumatic Tool Change Method in Shield Tunnel
  • WSS Grouting Reinforcement Assisted Pneumatic Tool Change Method in Shield Tunnel

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Embodiment Construction

[0048] Such as figure 1 A WSS grouting reinforcement-assisted air pressure tool change method in a shield tunnel shown includes the following steps:

[0049] Step 1. Soil reinforcement before tool change, the process is as follows:

[0050] Step 101, setting up the grouting platform: if figure 2 As shown, a grouting platform is set up in the shield body of the shield machine 1, and the shield body is assembled from the front shield, the middle shield and the shield tail from front to back, and the grouting platform is located in the middle shield; A knife disc is installed at the front of the front shield;

[0051] Step 102, drilling rig in place: installing the drilling rig on the grouting platform described in step 1;

[0052] Step 103, drilling and grouting: drilling and grouting the multiple grouting holes 2 in the soil outside the shield;

[0053] combine image 3 A plurality of the grouting holes 2 are drill holes formed by drilling through the plurality of radial ...

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Abstract

The invention discloses a method for WSS grouting reinforcement in a shield tunnel to assist air pressure tool change. Grouting platform, the grouting platform is located in the middle shield; 102. Drilling rig in place: install the drilling rig on the grouting platform; 103. Drilling and grouting: drill multiple grouting holes in the soil outside the shield body hole and grouting; a plurality of grouting holes are drilled through a plurality of radial holes arranged on the central shield from back to front in the soil outside the shield body; the grouting hole and the central axis of the shield body The included angles between them are all 11°-12.5°; 2. Tool change: After the grouting liquid in step 1034 is solidified, replace the tools on the cutter head. The method of the invention has simple steps, reasonable design, easy operation, high safety factor and good use effect, and can effectively solve the difficult problem of shield machine tool change when there is no reinforcement space on the ground.

Description

technical field [0001] The invention belongs to the technical field of tunnel shield construction, and in particular relates to a method for assisting air pressure tool change by WSS grouting reinforcement in a shield tunnel. Background technique [0002] The shield method is a fully mechanized construction method for modern tunnel construction. The main mechanical equipment used is the shield machine, which is divided into two types: earth pressure balance shield and mud-water balance shield. Among them, the earth pressure balance shield is used more. During the tunneling process, the shield machine uses the cutter to cut the soil and break the rock, and after the shield machine is excavated for a long distance, especially when the shield is constructed in the hard rock stratum or the soft and hard stratum, the cutter will inevitably produce eccentric wear and Damage to the ring, if the tool is not replaced in time and the excavation continues, the normal excavation effici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/08E21D9/00
Inventor 许建飞杨永强张登云田黎明张伟张大洋
Owner CHINA RAILWAY FIRST GRP CO LTD
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