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A device and method for testing the cooperative bearing performance of an anchor cable system

A test device and technology of anchor cables, applied in the field of collaborative load-bearing performance test devices, can solve problems such as design problems of anchor cable parameters in large-deformation tunnels, achieve convenience in the design of anchor cable parameters, simple structure, and ensure accuracy and accuracy sexual effect

Active Publication Date: 2022-01-18
STATE KEY LAB OF SHIELD & TUNNELING TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of the present invention is to provide a device and method for testing the cooperative bearing performance of the anchor cable system in view of the technical problems of large deformation tunnel support and the design problems of the anchor cable parameters in the prior art

Method used

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  • A device and method for testing the cooperative bearing performance of an anchor cable system
  • A device and method for testing the cooperative bearing performance of an anchor cable system
  • A device and method for testing the cooperative bearing performance of an anchor cable system

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Experimental program
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Embodiment 1

[0043] Embodiment 1, the horizontal spacing of the guide rail 1-1 is 0.5m, the vertical spacing of the guide rail 1-1 is 0.5m, the length of the guide rail 1-1 is 10m, and the rigidity of the guide rail 1-1 is the anchor rod 2-1 and the anchor cable 10 times the rigidity of anchor rod 3-1; the rigidity of anchor rod limiter 2-3 is 10 times that of anchor rod 2-1; the rigidity of anchor cable limiter 3-3 is that of said anchor cable 3-1 10 times the stiffness; the stiffness of the traction frame 4-2 needs to meet the two conditions of 10 times the stiffness of the anchor rod 2-1 and more than 10 times the stiffness of the anchor cable 3-1.

[0044] In specific implementation,

[0045] 1) A tunnel support is designed with a bolt length of 2.6m, a diameter of 25mm, and an anchorage length of 1.8m, using a 150×150×8mm butterfly tray with a pre-tightening force of 80kN; an anchor cable length of 6.3m, a diameter of 17.8mm, and an anchorage length of 1.7 m, preload 100kN. Comparin...

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Abstract

The invention discloses a device and method for testing the cooperative bearing performance of a bolt-cable system, belonging to the technical field of surrounding rock support for large-deformation tunnels. Aiming at solving the problem of bolt-cable collaborative support design for tunnel surrounding rock deformation control. The device includes a guide rail component, an anchor rod anchor, an anchor cable anchor, and a traction system. During implementation, determine the variables that affect the cooperative bearing performance of the bolt and cable to be studied, install the bolt anchor and the anchor cable anchor, and use the traction system to stretch the anchor and the anchor cable synchronously. According to the failure location, sequence, mode, stress and deformation characteristics of the anchor cable anchorage system, the cooperative bearing performance of the anchor cable is evaluated. Its structure is simple and easy to operate, which solves the shortcomings of the traditional experimental research on the bearing performance of a single anchor rod or anchor cable, and realizes the purpose of testing the cooperative bearing performance of anchor rods and anchor cables. Highly close, can guide the on-site construction more scientifically and effectively.

Description

technical field [0001] The invention relates to a cooperative bearing performance testing device and method, in particular to a bolt cable system cooperative bearing performance testing device and method suitable for the technical field of large-deformation tunnel surrounding rock support. Background technique [0002] In traffic, water conservancy, and mine tunnels buried deep in soft and broken rock formations, the stability of the surrounding rock is poor, and large deformation disasters occur frequently. Common support technologies include lining, steel arch, anchor cable, etc. The concept of bolt-cable joint support technology is to give full play to the respective advantages of the bolt and the anchor cable. In the initial stage of tunnel excavation and support, the flexible support of the bolt is mainly used, and the suspension function of the anchor cable is mainly used in the later stage. . The two are not combined to strengthen the support at the same time, but c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M99/00
CPCG01M99/007
Inventor 潘东江洪开荣孙振川周建军张兵杨延栋赵海雷秦银平陈桥王利明韩伟锋杨振兴李宏波
Owner STATE KEY LAB OF SHIELD & TUNNELING TECH
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