Closed goaf mashgas three-dimensional seepage simulation device and simulation method thereof
A technology of seepage simulation and goaf, which is applied in the direction of material inspection, fuel oil testing, etc., can solve the problems that simulated rock formations cannot be reused, and the distribution characteristics of goaf permeability are uncontrollable, etc., and achieve light weight, low density, and easy operation. Time-saving and labor-saving effect
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[0029] Below in conjunction with embodiment the present invention is further described.
[0030] Such as figure 1 , figure 2 , image 3 A gas three-dimensional seepage simulation device in a closed goaf is shown, which includes a sealed box 1, a permeability control system, a gas release system, a gas drainage system and a data acquisition system;
[0031] A plurality of piston cylinders 3 are embedded on the top cover plate of the sealed box 1, and the permeability control system includes a cylinder array composed of the plurality of piston cylinders 3. The area below the piston cylinders 3 Filled with high-resilience sponge 4 as a porous medium material for simulating gobs, the sealed box 1 area below the piston cylinder 3 is provided with adjacent gas release layer I11, adjacent gas release layer II12 and coal gas from top to bottom Release layer 13.
[0032] The size of the sealed box 1 is scaled down according to the actual size of the goaf. The sealed box 1 is tight...
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