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Testing device and testing method for uniaxial compressive strength of coal-rock mass

A technology for uniaxial compressive strength and testing equipment, which is applied in the direction of measuring equipment, strength characteristics, and the use of stable tension/pressure to test the strength of materials, etc., can solve the problems of drilling holes, fewer test points, and high cost, and achieve easy access, Feasibility improvement and strong pressurization effect

Pending Publication Date: 2019-11-12
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a simple and portable in-situ testing instrument and method that can quickly measure the uniaxial compressive strength of coal and rock mass: a coal and rock mass uniaxial compressive strength testing device and testing method for Solve the problems of high cost, few test points, and the need to drill additional holes in the existing technology

Method used

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  • Testing device and testing method for uniaxial compressive strength of coal-rock mass
  • Testing device and testing method for uniaxial compressive strength of coal-rock mass
  • Testing device and testing method for uniaxial compressive strength of coal-rock mass

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Embodiment 1

[0056] A specific embodiment of the device of the present invention, such as Figure 1-Figure 3 As shown, a coal and rock mass uniaxial compressive strength test device includes a power supply device, a probe 7 and a mounting rod 6; the power supply device is used to provide power for the probe 7, and the power supply device is connected to the probe 7 through a high-pressure pipe 4 The power supply device includes a pneumatic booster pump 1 and a three-way valve 2; the pneumatic booster pump 1 is connected to a high-pressure air source; the first end of the three-way valve 2 is connected to the pneumatic booster pump 1 through a pressure-resistant pipe 18, and the pressure-resistant pipe 18 can be a steel wire wound pressure-resistant rubber hose, the second end of the three-way valve 2 is connected to the probe 7 through the high-pressure pipe 4; the probe 7 is connected to the installation rod 6, and the installation rod 6 is used to send the probe 7 to the test section; the...

Embodiment 2

[0067] This embodiment provides a test method using the above-mentioned uniaxial compressive strength test device for coal and rock mass, using the uniaxial compressive strength test device for coal and rock mass provided in Example 1, the method includes the following steps:

[0068] S1. Select the test section of the coal or rock mass to be tested; the test section can be selected at different depths according to the test needs, and can test small apertures and weak coal and rock masses that cannot be sampled;

[0069] S2. Connect the power supply device: connect the pneumatic booster pump 1 with the high-pressure air source through the conversion joint 13 and the high-pressure air pipe 14 to provide a power source for it; the pneumatic booster pump 1 is connected to the three-way valve through the pressure-resistant pipe 18 2 connected to the first end; the third end of the three-way valve 2 is connected to the pressure relief pipe; the three-way valve 2 is connected to the ...

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Abstract

The invention discloses a testing device and a testing method for uniaxial compressive strength of coal-rock mass, belongs to the field of coal-rock mass strength testing, and solves the problems thatin the prior art, the consumption is high, testing points are few, additional holing is needed, and a liquid medium is difficult to obtain. The testing device comprises a power supply device, a probe(7) and a mounting rod (6); the power supply device is used for providing power for the probe (7), and is connected with the probe (7) through a high-pressure pipe (4); the power supply device comprises a pneumatic booster pump (1) and a three-way valve (2); the pneumatic booster pump (1) is connected with a high-pressure air source; the first end of the three-way valve (2) is connected with thepneumatic booster pump (1) through a pressure-resistant pipe (18); and the second end of the three-way valve (2) is connected with the probe (7) through a high-pressure pipe (4). The testing device and the testing method provided by the invention are suitable for small-aperture in-situ testing of the uniaxial compressive strength of the coal-rock mass.

Description

technical field [0001] The invention belongs to the technical field of uniaxial compressive strength of rock coal, and in particular relates to a test device and method for uniaxial compressive strength of coal and rock mass. Background technique [0002] The mechanical parameters of coal and rock mass include uniaxial compressive strength, uniaxial tensile strength, uniaxial shear strength and triaxial compressive strength, etc. It is an essential basic parameter for excavation and support, mine construction, etc. [0003] The mechanical parameters of coal and rock mass can be obtained through laboratory tests or on-site in-situ tests. However, the samples used in laboratory tests are all coal or rock blocks, and it is difficult to simulate and reflect the state of coal and rock mass in field engineering during the test. Therefore, the laboratory test results are often quite different from the actual site, which is generally too large for engineering. Moreover, most coal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12
CPCG01N3/12G01N2203/0003G01N2203/0019G01N2203/0044G01N2203/0252
Inventor 姚强岭杨朴朱柳夏泽闫凯
Owner CHINA UNIV OF MINING & TECH
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