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Variation law of coal permeability under cyclic loading and unloading
2019
Thermal Science
Original scientific paper https://doi.org/10.2298/TSCI180907215G In the excavation process, the coal pillar will undergo shear failure due to repeated loading and unloading from mining stress. Meanwhile, plastic flow will occur after shear failure. The permeability change of the coal pillar under plastic flow is closely related to the loading path. Through a permeability test of the coal sample after shear yielding under cyclic loading and unloading conditions, the variation law of permeability
doi:10.2298/tsci180907215g
fatcat:ewuqyadx4fagff7irxdngwmyrm