Experimental research on the venting characteristics of methane and coal dust two-phase system mixture explosions

•Venting characteristics of gas/dust hybrid explosions was researched by experiment.•Relationship between the venting flame propagation and pressure rise was clarified.•Propagation characteristics of venting flame and its change mechanism were studied.•Distribution and variation of venting flame temperature field were analyzed deeply.•Physical model of gas/dust two-phase explosion venting process was established.