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采用力学理论研究了裂隙岩体渗透系数随埋深及水压力的变化规律，得出渗透系数与埋深及水压力的关系式．另外，将裂隙岩体介质假设为互相平行的几组裂隙网络，提出了应力与渗流的耦合模型，得出了裂隙岩体与三向应力的关系式．利用这些公式及有限元方法计算了受采矿影响后岩体的渗透性变化值，并且得到了试验结果的证实．
The mechanics theory is used to study the variation law of the permeability coefficient of fractured rock mass with depth and water pressure. The relation between permeability coefficient and depth and water pressure is obtained. In addition, the fractured rock mass is assumed to be several groups of fracture networks parallel to each other, and a coupled model of stress and seepage is proposed. The relation between fractured rock mass and three-direction stress is obtained. Using these formulas and the finite element method, the change of permeability of rock mass after mining is calculated, and the result of the experiment is confirmed.