Analysis on blast wave induced by surrounding rock falling in accident of extremely large mine-out area

According to the present situation of landslide in south No.6 mine-out areas of Tongxing Company,three different models of extrusion instantly of lateral type,extrusion instantly of side tumbling type,scattered gradually in large area are built,and the pressure and wind speed of shock wave in different models are calculated.In order to confirm the scope affected by blast wave when landslide falling,blast wave's attenuation in roadway is calculated.Thickness of ore cushion in bottom of mine-out areas is checked out by use experience formula of wave attenuation by ore cushion.