Coal body permeability characteristic testing system and method
A technology of permeability characteristics and testing system, applied in the field of coal permeability testing system, can solve problems such as uncontrollable confining pressure, change of seepage characteristics, and confining pressure factors provided by engineers and technicians
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Embodiment 1
[0094] Such as figure 1 and image 3 As shown, a coal permeability characteristic testing system of the present invention includes an electronic universal testing machine 40, a permeability characteristic testing device 41, a vibration detection device 50, a first gas system, a confining pressure hydraulic system and a computer 42. The characteristic testing device 41 is centrally placed on the base of the electronic universal testing machine 40, and the electronic universal testing machine 40 is connected with the computer 42;
[0095] The permeability characteristic testing device 41 is composed of a roadside simulation mechanism and a roadside surrounding environment simulation mechanism. The roadside simulation mechanism includes a baffle plate 1, a ventilating plate 2, a coal rock sample 3 and a U-shaped ferrule 4 which are butted in sequence, The baffle plate 1, the vent plate 2, the coal rock sample 3 and the U-shaped ferrule 4 are wound and fixed as a whole by electri...
Embodiment 2
[0126] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the present invention also includes a second methane gas system, the second methane gas system includes a second methane gas tank 38, and the gas outlet of the second methane gas tank 38 It is connected to the vent pipe 34 through a third gas transmission pipeline 47 , and the third gas transmission pipeline 47 is provided with a second pressure reducing valve 48 and a second air pressure gauge 49 . Specifically, the third gas transmission pipeline 47 is connected to the vent pipe 34 through a third quick connector. All the other structures are the same as in Example 1.
[0127] The method for testing the permeability characteristics of a coal body under the influence of a disturbance by using a coal permeability characteristic testing system in this embodiment includes the following steps:
[0128] Step 1. Assembling the test system for coal permeability characteristics, the s...
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