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A microbial reinforcement structure at the end of a shield tunnel and its construction method

A technology for shield tunneling and reinforcing structures, which is applied in tunnels, earthwork drilling, mining equipment, etc., to achieve the effects of strong construction practicability, convenient construction quality control, and promotion of growth and reproduction.

Inactive Publication Date: 2018-02-27
HAINAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to provide a shield tunnel end microbial reinforcement structure and its construction method in order to solve many problems existing in the commonly used reinforcement methods at the end of shield tunnels

Method used

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  • A microbial reinforcement structure at the end of a shield tunnel and its construction method
  • A microbial reinforcement structure at the end of a shield tunnel and its construction method
  • A microbial reinforcement structure at the end of a shield tunnel and its construction method

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Embodiment Construction

[0045] see figure 1 , figure 2 with image 3 Shown:

[0046] In the microbial reinforcement structure at the end of the shield tunnel provided by the present invention, a microbial reinforcement area 2 is provided at the front end of the enclosure structure 1 , and a vertical pipe 3 is provided at the side of the microbial reinforcement area 3 close to the enclosure structure 1 .

[0047] The scope of microbial reinforcement zone 2: the vertical distance of the transverse section of tunnel 5 is from the bottom 3.0m below the outer diameter of shield machine 4 to the ground, and the left and right distance of the transverse section of tunnel 5 is 3.0m from the left of the outer diameter of shield machine 4 to the shield machine At 3.0m to the right of the outer diameter of machine 4, the longitudinal section direction of tunnel 5 is the length of the main shield machine plus 2-3 times the segment width as the longitudinal reinforcement length, and the 3.0m outer diameter cir...

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Abstract

The invention discloses a shield tunnel end microorganism reinforcing structure and a construction method thereof. According to the reinforcing structure, a microorganism reinforcing area is arranged at the front end of an envelope structure, and a vertical tube s arranged on the side, close to the envelope structure, of the microorganism. The range of the microorganism reinforcing area is that the up-down distance of the cross section of a tunnel is the distance from the position 3.0 m lower than the bottom of the outer diameter of a shield tunneling machine to the ground, the left-right distance of the cross section of the tunnel is the distance from the position 3.0 m away from the left side of the outer diameter of the shield tunneling machine and the position 3.0 m away from the right side of the outer diameter of the shield tunneling machine, and the longitudinal reinforcing length of the longitudinal section direction of the tunnel is that sum of the length of a shield tunneling machine main body and 2-3 times of the width of a tube piece. The construction method comprises the first step of construction of the microorganism reinforcing area, the second step of construction of a heating circulation system, the third step of construction of vertical freezing, the fourth step of removing of freezing tubes. The shield tunnel end microorganism reinforcing structure and the construction method thereof have the advantages that the problem that the reinforcing effect through the conventional reinforcing mode in the area is not good is solved, and it can be guaranteed that the shield tunneling machine can come out of a hole smoothly.

Description

technical field [0001] The invention relates to a microbial reinforcement structure and a construction method thereof, in particular to a microbial reinforcement structure at the end of a shield tunnel and a construction method thereof. Background technique [0002] At present, when the shield machine enters and exits the tunnel, the general construction method is to complete the main structure of the shield tunnel first, then improve and strengthen the soil at the end of the shield tunnel, and then remove the reinforced concrete enclosure structure at the portal, and then complete the tunnel. The shield machine departs or arrives. Among them, the time required for demolition of the cave door is very tight, and the construction is difficult. After the portal is demolished, the strength and sealing of the reinforced body are very high. If the reinforcement effect is not good, the gap between the shield and the portal and the surface settlement will easily occur during the de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00
CPCE21D9/001
Inventor 胡俊卫宏李玉萍刘勇姚凯佳琳
Owner HAINAN UNIV
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