A device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions

A technology of fractured rock mass and permeability coefficient, which is applied in measurement devices, permeability/surface area analysis, suspension and porous material analysis, etc., can solve the problems of inaccurate test results, complicated operation, high cost, etc. Accurate water passage area and simple structure

Active Publication Date: 2022-04-29
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology

However, since fluid seepage in rock is a very complicated problem, whether it is in-situ pumping, water pressure test, or common rock permeability tester, there are high costs, cumbersome operation, and inaccurate test results, etc. question

Method used

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  • A device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions
  • A device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions
  • A device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions

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Embodiment Construction

[0029] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] A device for testing the permeability coefficient of fractured rock mass under different water pressure conditions of the present invention is as follows: figure 1 As shown, it consists of test equipment, water inlet equipment and calculation equipment.

[0031] Test equipment such as figure 2 Shown includes water pressure box 6, base box 13 and the limiter between the two (the limiter plays a supporting and fixing role).

[0032] Such as image 3 As shown, the water pressure box 6 is in the shape of a cuboid as a whole, and the upper part is provided with a water inlet valve 4, and the bottom plate of the water pressure box 6 has an upper sample groove 20, and the size of the groove is slightly larger than the size of the rock sample 7; the base box 13 A lower sample slot 19 is opened on the top plate, correspon...

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Abstract

The invention discloses a device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions. The test device is composed of test equipment, water inlet equipment and computing equipment; The water pressure box is in the shape of a cuboid as a whole, with a water inlet valve on the upper part, and an upper sample groove is opened on the bottom plate of the water pressure box, and the size of the groove is slightly larger than the size of the rock sample; the top plate of the base box is opened with a The lower sample slot corresponds to the upper sample slot; the inside of the base box is equipped with a sample holder, a measuring cup and a gravity sensor from top to bottom; during the test, the water pressure is adjusted by the pressure stabilizer, and the gravity sensor is used to obtain The amount of seepage water changes, and the permeability coefficient is calculated by Darcy's law. The invention has the advantages of low cost, simple structure, portability and convenient operation, and can test the permeability coefficient of fractured rock mass under different water pressure conditions.

Description

technical field [0001] The invention belongs to the technical field of rock permeability tests, in particular to a device and method for testing the permeability coefficient of fractured rock mass under different water pressure conditions. Background technique [0002] Rock permeability is an important parameter in rock mechanics, which refers to the ability of rock to be flowed through by fluid. In practical engineering, rock seepage has an important influence on the mechanical properties of rock. It will change the stress of rock, cause rock deformation, cracking, softening, mudification or dissolution, thus endangering the stability of rock mass. However, since fluid seepage in rock is a very complicated problem, whether it is in-situ pumping, water pressure test, or common rock permeability tester, there are high costs, cumbersome operation, and inaccurate test results, etc. question. Contents of the invention [0003] Aiming at the existing problems of rock permeabi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08
CPCG01N15/08
Inventor 罗刚王翔赵永杰张辉傲
Owner SOUTHWEST JIAOTONG UNIV
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