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Gas sealing device and test method for coal rock impact test

A technology of sealing device and impact experiment, which is applied in the direction of measuring device, testing the strength of materials and instruments using one-time impact force, so as to avoid a large amount of loss, ensure the gas-solid coupling state and gas content.

Active Publication Date: 2013-09-25
ANHUI UNIV OF SCI & TECH
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Problems solved by technology

However, the gas-solid coupling parameter tester for gas-containing gas can only carry out experiments for static and quasi-static loading, but cannot carry out experiments for dynamic loading.

Method used

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  • Gas sealing device and test method for coal rock impact test
  • Gas sealing device and test method for coal rock impact test
  • Gas sealing device and test method for coal rock impact test

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Experimental program
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Embodiment Construction

[0039] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0040] Referring to Fig. 1(b), it shows a schematic structural diagram of a sample gas sealing device used in gas-solid coupling state impact experiments of gas-rich coal and rock according to an embodiment of the present invention. Compared with the traditional SHPB structure schematic diagram shown in Figure 1(a), Figure 1(b) is a schematic diagram of the equipment after the traditional SHPB is loaded with a new device.

[0041] In Figure 1(b), the punch 1 moves towards the incident rod 2, the incident rod 2, the transmission rod 5, and the absorption rod 6 are collinear, and the connection end 12 of the injection rod 2 and the transmission rod connection end of the transmission rod 5 A sample gas sealing device 7 is arranged between 17, and the sample 4 is placed in the sample gas sealing device 7, and the sample 4 is collinear with the incident rod 2...

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Abstract

The invention provides a test sample gas sealing device for a gas-enriched coal rock gas solid coupling state impact test so as to research the impact mechanical property of a gas-enriched gas coal rock. The device comprises a support, a gas sealing storehouse, a sealing storehouse cover, a transmission rod connecting end, an incident rod connecting end, a transmission rod, an incident rod, an O-shaped sealing ring, a YX-shaped sealing ring, an incident rod connecting end and storehouse cover fixing bolt, a transmission rod connecting end and sealing storehouse fixing bolt, a gas inlet hole, a gas outlet hole, an electromagnetic adjusting control valve, a gas inlet adjusting gas valve, a gas tank, a gas outlet gas valve, a gas suction pump, a high-frequency gas gas-pressure sensor, a super-dynamic gas pressure acquisition instrument, a gas pressure monitoring instrument, a computer, a balance adjusting bolt and a fixing bolt. By adoption of the device, the gas content of a test sample is constant in the impact stress wave loading process in the gas-enriched gas coal rock impact test process. A unique test device is provided for research on the mechanical property of the gas coal rock.

Description

technical field [0001] The invention belongs to the technical field of testing mechanical properties of coal and rock, and more specifically relates to a sample gas sealing device and an experimental method for an impact loading experiment of gas-rich coal and rock in a gas-solid coupling state. Background technique [0002] During the mining process of underground coal resources, the coal rock is in a gas-rich state, and a large number of mechanized fully mechanized coal cutters are used to break the coal rock during mining. To power load, it is necessary to master the dynamic mechanical properties of gas-bearing coal rocks. These dynamic mechanical properties are usually obtained by carrying out various impact tests in the laboratory. The impact test system that is widely used and the results are relatively reliable is the SHPB (split Hopkinson pressure bar, separate Hopkinson pressure bar) device, and thus Improved various deformation devices. [0003] In the traditiona...

Claims

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Application Information

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IPC IPC(8): G01N3/02G01N3/30
Inventor 谢广祥殷志强王磊胡祖祥
Owner ANHUI UNIV OF SCI & TECH
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