Device and method for testing permeability coefficient of fractured rock mass under different water pressure conditions

A technology for fractured rock mass and permeability coefficient, which is applied in measuring devices, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve problems such as complexity, inaccurate test results, and cumbersome operations

Active Publication Date: 2021-07-06
SOUTHWEST JIAOTONG UNIV
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  • Abstract
  • Description
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  • Application Information

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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, o

Method used

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  • Device and method for testing permeability coefficient of fractured rock mass under different water pressure conditions
  • Device and method for testing permeability coefficient of fractured rock mass under different water pressure conditions
  • Device and method for testing 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 testing device and method for permeability coefficient of fractured rock mass under different water pressure conditions. The testing device is composed of testing equipment, water inlet equipment and computing equipment. The testing equipment comprises a water pressure box, a base box and a limiter between the water pressure box and the base box. The water pressure tank in a cuboid shape as a whole, a water inlet valve is arranged at the upper part of the water pressure tank, an upper sample groove is formed in the bottom plate of the water pressure tank, and the size of the groove is slightly greater than that of a rock sample; a lower sample groove is formed in a top plate of the base box and corresponds to the upper sample groove; a sample bracket, a measuring cup and a gravity sensor are respectively arranged in the base box from top to bottom; during testing, the water pressure is adjusted through the pressure stabilizer, the seepage water quantity change is obtained through the gravity sensor, and the permeability coefficient is calculated through the Darcy law. The device is low in cost, simple in structure, convenient to carry and operate and capable of testing the permeability coefficients of the 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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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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