Testing device and method for rock straight shear-seepage

A test device and direct shearing technology, applied in the direction of applying stable shear force to test the strength of materials, can solve the problems of ignoring sample defects and low shear strength, and achieve cost-effectiveness, fine data collection, and rich functions Effect

Active Publication Date: 2019-05-10
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

However, there are many deficiencies in the determination of rock shear strength by conventional direct shear tests.
[0005] 1. The sample can only undergo shear failure along the pre-selected failure surface in the direct shear instrument, ignoring the internal defects of the sample, and can only simulate the

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  • Testing device and method for rock straight shear-seepage
  • Testing device and method for rock straight shear-seepage
  • Testing device and method for rock straight shear-seepage

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Embodiment Construction

[0046] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0047] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof;

[0048]For the convenience of description, if the words "up", "down", "left" and "right" appear in the present in...

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Abstract

The invention discloses a testing device and method for rock straight shear-seepage, and relates to a rock mechanics test technique. An involved three-axis compression shear testing device comprises an axial shear pressing head (1), a pressure chamber (3), sealing tape (4), a deformation rubber sleeve (5) for isolating contact between a test piece and oil, the testing test piece (6) with a prefabricated joint, and a rigid cylindrical base plate (8). According to the adopted testing method and test piece preparation method, the characteristics of a rock three-axis compression experiment are fully utilized, the stable confining pressure is provided for the test piece through the oil pressure chamber, the rock test piece with the prefabricated joint is prepared through the special method, meanwhile, the conditions for a shear test are created, and then a seepage test is carried out. By adopting the method to carry out the shear-seepage tests through a three-axis testing instrument, obtained data are more accurate and more reliable, and the shear damage condition of rock under the natural conditions is simulated to a larger extent.

Description

technical field [0001] The invention relates to a test device and method for direct shear-seepage of rock, in particular to a test method for shear-seepage by using rock triaxial compression test equipment. Background technique [0002] The coupling characteristics of seepage and shear in deep rock mass joints has become a key scientific problem that needs to be solved urgently in the stability analysis of large deep underground engineering. The full shear seepage coupling test of rock joints is the most effective and direct method to study the hydraulic characteristics of rock joints. The rock shear strength and shear strength parameters are the premise and basis for numerical simulation and stability analysis of surrounding rock deformation. [0003] At present, the test methods for rock shear strength mainly include direct shear test and triaxial shear test. [0004] The rock direct shear test device and test method are relatively simple, and can be carried out in the l...

Claims

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Application Information

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IPC IPC(8): G01N3/24
Inventor 杨旭旭孙德康孙盼盼乔卫国吴岳
Owner SHANDONG UNIV OF SCI & TECH
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