在采用留刚性矿柱的房柱采矿法开采上卡姆钾盐矿床的过程中,出现围岩中石盐的滑移现象。当隔水顶柱中产生和发育裂隙时,盐上杂岩层的充水会给钾盐矿山造成淹没地下巷道的危险。在预估开采负荷下,利用隔水层强度与裂隙大小的关系和容许的裂隙尺寸可以令人满意地评价破坏机理。众所周知,完全可 During the exploitation of the Ka-Kam potash deposit by adopting the pillar-and-pillar mining method of leaving rigid pillar, the slip of rock salt in the surrounding rock appears. When fissures are created and developed in the riser column, filling of the salt layers with complex strata of mud can risk submerging underground tunnels in the potash mines. Under the predicted mining load, the failure mechanism can be satisfactorily evaluated by using the relationship between the strength of the aquitard and the size of the fracture and the allowable fracture size. As we all know, completely