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本文对如何确定裂隙带和塌落带的高度以及由于采掘工作而引起的岩体内部和地面的水平变形的大小做了详细的论述。岩石松散系数对裂隙带和塌落带高度的影响岩石松散系数K就是被崩落岩石的体积同它还处在围岩中时的体积之比,可用下列公式表示:K=(V_u)/(V_c)>1 (1)式中:V_u——被崩落岩石的体积;V_c——岩石处在围岩中时的体积。这一系数与岩石压实的时间有关:压实的时间越长,系数值就越小。矿山压力,特别是矿层采区周围岩体的压力也有很大的影响。压力越大,作用的时间越长,系数值就越不均衡
In this paper, how to determine the height of fissure zone and slump zone and the size of horizontal deformation in rock mass and ground caused by excavation work are discussed in detail. Rock Loose Coefficient Impact on Fracture Zone and Slump Zone Height The rock loose coefficient, K, is the ratio of the volume of rock that is being rocked to the volume of the rock it is still in. It is expressed by the following equation: K = (V_u) / (V_c )> 1 (1) Where: V_u is the volume of the rock that is caving in; V_c is the volume of the rock when it is in the surrounding rock. This factor is related to the rock compaction time: the longer the compaction time, the smaller the coefficient value. Mine pressure, especially the pressure of rock mass around the mining area, also has a great impact. The greater the pressure, the longer the duration, the more unbalanced the values of the coefficients