Abstract Gas explosion is one of the five major hazards in mines. with about 36% of such incidents occurring in the excavation working face. Therefore. to investigate the impact of gas explosion propagation laws within excavation roadways. https://www.roneverhart.com/HGST-Ultrastar-7K6000-HUS726040ALS214-4TB-7-2K-RPM-SAS-12Gb-s-512n-128MB-3-5-SE-Hard-Drive/