TY - JOUR TI - Effect of cyclic temperature impact on coal seam permeability AU - Wang Dengke AU - Yao Banghua AU - Gao Yanan AU - Li Weirui AU - Lv Ruihua JN - Thermal Science PY - 2017 VL - 21 IS - 11 SP - 351 EP - 357 PT - Article AB - The gas permeability of the coal samples, subjected to cyclic temperature impact under different conditions, was considered in the article. Meanwhile, the change of the coal sample permeability and fractures were analyzed through scanning electron microscopy. The obtained results show that the cyclic temperature impact has largely positive effect on the increase of the coal sample permeability and that new fractures and permeability growth increase with the higher temperature difference.