Multi-field coupling monitoring and testing device for coal rock

A test device, coal and rock technology, applied in the direction of measuring device, using stable tension/pressure test material strength, instruments, etc., can solve the problem of less test devices
CN107727508APending Publication Date: 2018-02-23LIAONING TECHNICAL UNIVERSITY
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
LIAONING TECHNICAL UNIVERSITY
Publication Date
2018-02-23

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Abstract

The invention discloses a multi-field coupling monitoring and testing device for coal rock and belongs to the technical field of mining. The multi-field coupling monitoring and testing device comprises a base, a testing cavity body, an axial-pressure applying system, a confining-pressure applying system, a pore flowing-pressure simulation system, a temperature applying system, a charge acquisitionsystem, an acoustic emission signal acquisition system, a strain acquisition system and a data acquisition and analysis device, wherein the testing cavity body comprises a steel pressure-resistant cavity and a sealing flange disc, a transmission rod is arranged at the middle part of the sealing flange disc, and an upper pressing head and a lower pressing head are arranged in a sealed space formedby the steel pressure-resistant cavity and the sealing flange disc; the pore flowing-pressure simulation system comprises a first pore flow-pressure port formed in the upper pressing head, a second pore flow-pressure port formed in the lower pressing head, a first flowing-pressure transmission hole and a second flowing-pressure transmission hole formed in the sealing flange disc, a flow meter anda flowing-pressure applying system; the temperature applying system comprises an electric-control heating belt wound on the surface of a thermoplastic sleeve; and the axial-pressure applying system comprises an axial hydraulic cylinder and a pressure sensor.
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Description

technical field

[0001] The invention relates to the technical field of mining, in particular to a coal-rock multi-field coupling monitoring test device. Background technique

[0002] The long-term mechanical behavior of coal and rock is an important research direction in the field of rock mechanics, and it is also a hot issue in engineering. In recent years, the coal industry has officially entered the stage of deep mining. The deep coal rock mass is not only affected by high geostress, but also coupled with high osmotic pressure and high geothermal temperature. Therefore, mining engineering activities have changed the stability of the original rock stress. Therefore, it is extremely important to study the long-term mechanical behavior of coal and rock mass under the coupling effect of high ground stress-high seepage pressure-high ground temperature, which is conducive to a more scientific understanding of deep high stress, The catastrophe breeding mechanism of coal and roc...

Claims

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