Research on coal bedding structure is the theory foundation and precondition of coal seam gas exploitation.Because it must be non-magnetism,which was put in the equipment of nuclear magnetic resonance image,a kind of non-magnetism self-press triaxial stress permeability instrument was developed using the non-magnetism and high-strength gathers carbonic ether material.Using this equipment,the actual stress situation of samples with a applied press could be simulated.The results show that sample which was loa...
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