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Device and method suitable for in-situ direct shear test of rock-soil body in tunnel

A technology of a test device and a test method, which is applied in the direction of using a stable shear force to test the strength of materials, can solve the problems of low test efficiency, poor test result accuracy, and complicated test operations, and achieves convenient transportation, low cost, and guaranteed The effect of experimental safety

Pending Publication Date: 2018-09-21
CHANGAN UNIV
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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a device and method suitable for the in-situ direct shear test of rock and soil in tunnels, so as

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  • Device and method suitable for in-situ direct shear test of rock-soil body in tunnel
  • Device and method suitable for in-situ direct shear test of rock-soil body in tunnel
  • Device and method suitable for in-situ direct shear test of rock-soil body in tunnel

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Abstract

The invention discloses a device and method suitable for an in-situ direct shear test of a rock-soil body in a tunnel. A set of test loading device adopts a strain control type, and the test process is completed by manually pressing to control the displacement of a sample. The device and method suitable for the in-situ direct shear test of the rock-soil body in the tunnel have the advantages thatfor the complex test conditions in the tunnel, the site environment characteristics are fully combined, the structure is simple, the disassembly and assembly are easy, the operation is convenient, thedata recording accuracy is high, an ordinary technician can quickly grasp the method, the stability of the whole experimental process is improved, and the safety of the test process and experimentersare fully guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering testing, and in particular relates to an in-situ direct shear test device and method suitable for rock and soil in tunnels. Background technique [0002] Physical and mechanical parameters such as cohesion and friction angle of surrounding rock are important basic data for evaluating the stability of tunnel surrounding rock and the rationality of support parameters. For a relatively complete rock mass, the cohesion and friction angle of the tunnel surrounding rock can generally be obtained through on-site coring, and then an indoor shear test or triaxial test. For very weak, broken, and loose rock mass, it is difficult to take cores, and in-situ direct shear tests must be used to obtain the cohesion and friction angle of the surrounding rock. However, due to the constraints of various complex conditions on site, it has been difficult to conduct in-situ direct shear tests on rock and so...

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Application Information

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IPC IPC(8): G01N3/24
CPCG01N3/24
Inventor 陈建勋陈丽俊罗彦斌刘立明郭亚龙杨亚楠许岛赵毅
Owner CHANGAN UNIV
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