Device for Simultaneous Measurement of Gas Injection Coal Expansion and Permeability under Triaxial Stress Conditions
A gas injection, triaxial stress technology, applied in measurement devices, fluid devices, permeability/surface area analysis, etc., can solve the problem that permeability cannot be quantitatively expressed
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[0022] Such as figure 1 As shown, the device for simultaneous measurement of gas injection coal expansion and permeability under triaxial stress conditions of the present invention includes a gas injection system 1, a confining pressure system 2, an axial pressure loader 25, a permeability testing system 3 and a data acquisition system 4. The air outlet of the gas injection system 1 is connected to the air inlet of the confining pressure system 2 through the high pressure air inlet pipe 43, the axial pressure loader 25 is set outside the confining pressure system 2, and the permeability testing system 3 is connected to the confining pressure system through the high pressure air pipe 43. The gas outlet of the system 2 is connected, and the data acquisition system 4 is connected with the confining pressure system 2 through a data line with a sensor.
[0023] The confining pressure system 2 includes a water tank 28, a high-pressure water pump 29, a support 27, a sample cylinder 3...
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