The Study Of Stress Pressure And Mining Of The Shallow Coal Seam In Shen-dong District

Because overlying Strata upon shallow coal seam is thin, movement and stress behaviors of overlying Strata all bear particularity during mining.During mining, the stress behaviors of workface are very obvious. Thin rock strata of roof fall by full thick, procreant cranny reach the earth's surface and have clearly sidesteppedsubsidence.Whereas the character of roof's movement and falling caused by coal seam is shallow in Shen-dong mine district, the workface advance rate must be picked up during mining, in order to control strata of roof effectively.