在奥陶系灰岩岩溶承压水上带压开采时,用综合方法进行了观测,在室内做了相似材料模拟试验,得到了不同情况下的放(注)水规律;底板岩层水平及垂直方向受力情况;附加最大剪应力值;主压力方向;应力分布曲线;底板位移曲线及底板裂隙发育状况等,从而确定了底板破坏深度。 During Ordovician limestone karst pressure water pressure mining, the observation was made by the integrated method. Similar material simulations were done indoors, and the water law was released under different conditions. The horizontal and vertical direction of the bottom rock strata The maximum stress value, the direction of the main pressure, the stress distribution curve, the displacement curve of the bottom plate and the development status of the crack in the bottom plate, so as to determine the destructive depth of the bottom plate.