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许多文献阐述了关于地下开采层状矿层所导致的岩层变形机理.当破坏力矩M_(max)为M_(max)>W_x·R_g (1)时,则矿物采出后其采空区上部顶板状态如图1所示.式中M_(max)岩体中各岩层的最大破坏力矩为
Many documents describe the deformation mechanism of rock strata caused by the underground mining of strata. When the maximal damage moment M_ (max)> W_x · R_g (1), the top roof state of the mined-out area Shown in Figure 1. Where M_ (max) rock in the rock of the maximum failure moment