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Counter-pulled anchor cable structure for controlling bias deformation of tunnel and construction method of counter-pulled anchor cable structure

A technology for controlling tunnels and anchor cables, applied in tunnels, tunnel linings, installation of anchor rods, etc., can solve the problems of affecting construction progress, high cost, and large number of polluting workers, and achieves reduction of eccentric loads, low economic costs, and low cost. The effect of preventing bias deformation and destruction

Pending Publication Date: 2017-09-08
山东省地质矿产勘查开发局八0一水文地质工程地质大队
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, anti-sliding piles have the advantage of high anti-sliding ability, but the number of sewage workers is large and the cost is relatively high, which affects the construction progress

Method used

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  • Counter-pulled anchor cable structure for controlling bias deformation of tunnel and construction method of counter-pulled anchor cable structure
  • Counter-pulled anchor cable structure for controlling bias deformation of tunnel and construction method of counter-pulled anchor cable structure
  • Counter-pulled anchor cable structure for controlling bias deformation of tunnel and construction method of counter-pulled anchor cable structure

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Effect test

Embodiment 1

[0048] figure 1 It shows the anti-tension anchor cable structure for controlling tunnel bias deformation of the present invention, which includes steel pipe piles 1, which are arranged along the bias tunnel 100 and apply to the bias tunnel 100 In the side of the mountain with relatively large bias load, the steel pipe pile 1 is used to reinforce the rock mass of the side of the mountain with relatively large bias load before excavation. In this embodiment, parameters such as the diameter, spacing, length, and wall thickness of the steel pipe pile 1 can be determined according to influencing factors such as tunnel burial depth, surrounding rock conditions, groundwater state, and mountain stability, as long as it can ensure that the tunnel on one side of the mountain is stability of the rock mass. Here, the steel pipe piles 1 have a diameter of 50-1000 mm and are arranged in a quincunx shape or a grid pattern, and the horizontal and vertical spacings are both 0.3-5 m (preferabl...

Embodiment 2

[0066] Such as Figure 10 As shown, the present invention also provides a construction method for preventing bias deformation of a bias tunnel on the basis of the first embodiment above, which includes the following steps:

[0067] S1, prefabricated steel pipe pile 1;

[0068] S2. Install the steel pipe pile 1 in the mountain body on the side where a large bias load is applied to the bias tunnel 100 ; and perform grouting reinforcement on the surrounding rock mass of the steel pipe pile 1 .

[0069] Specifically, step S2 includes:

[0070] S21, such as Figure 11 As shown, a crown beam 2 is set in the rock body of the mountain body on the side where a large bias load is applied, and the top of the steel pipe pile 1 is fixed in the crown beam 2, and at the same time, a drill can also be pre-drilled. hole 308, and extend the bottom of the steel pipe 10 of the steel pipe pile 1 into the pre-drilled hole, so that the steel pipe pile 1 is arranged along the bias tunnel 100, and ...

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Abstract

The invention discloses a counter-pulled anchor cable structure for controlling bias deformation of a tunnel and a construction method. The counter-pulled anchor cable structure for controlling bias deformation of the tunnel comprises steel pipe piles which are arranged on one side of a mountain along the bias tunnel; and the steel pipe piles are used for reinforcing rock masses on one side of the mountain. The bias load stressed by the bias tunnel is reduced by the miniature steel pipe piles mainly, and the situations of diseases and unstability of the tunnel structure due to the fact that the tunnel is in a severe bias state are avoided.

Description

technical field [0001] The invention relates to the field of geotechnical engineering, in particular to an anti-tension anchor cable structure and a construction method for controlling bias deformation of a tunnel. Background technique [0002] Unbiased tunnel refers to the tunnel where the surrounding rock pressure on both sides of the tunnel support structure is quite different or the load is asymmetrical. For example, the section of a highway tunnel is generally horseshoe-shaped. Due to factors such as terrain asymmetry, geological rock formations, and construction, the loads on both sides of the tunnel structure are asymmetrical, forming a bias. The effect of bias is one of the main reasons for tunnel deformation and collapse. Therefore, when the tunnel is under severe bias, measures should be taken to prevent the tunnel structure from being damaged or unstable. The main defects during the construction period are that the pressure on the bias side is high, which is pron...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/14E21D11/10E21D20/00
CPCE21D11/10E21D11/14E21D20/00
Inventor 赵振华李洪涛曾纯品武法伟钟秀燕张慧黄薛雷炳宵张文刚
Owner 山东省地质矿产勘查开发局八0一水文地质工程地质大队