Coupled Stress and Fluid Flow Analysis for Jointed Rock Masses

为了提供一组求解应力和流体耦合流动的控制方程，将通常含有大量地质不连续面的岩体视为各向异性弹性多孔介质，其弹性柔量和渗透率张量与不连续岩体的流体力学等效。在假定裂纹可以由两个弹簧连接的平行平板代替的假设下，建立了特别强调渗透张量的流体力学等效项。渗流网络的二维数值分析支持渗透张量的有效性。通过对现场资料的分析，验证了该模型在岩石水力学实际应用中的适用性。

To provide a set of governing equations for solving the coupled stress and fluid flow, a rock mass, which commonly contains a large number of geological discontinuities, is treated as an anisotropic, elastic porous medium with the corresponding elastic compliance and permeability tensors, hydro-mechanical equivalents to the discontinuous mass. The hydro-mechanical equivalents, with the special emphasis on the permeability tensor, are formulated on the assumption that cracks can be replaced by a set of parallel planar plates connected by two springs. Two-dimensional numerical analyses on seepage flow networks support the validity of the permeability tensor. Some field evidence is analyzed to examine the applicability of the present model for the practical purpose of rock hydraulics.