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岩石力学工程中常利用等效多孔介质方法研究裂隙岩体水力特征,等效渗透系数就是等效方法中的重要参数,典型单元体(REV)尺度与存在性决定了等效渗透系数的可靠性和有效性。因此,研究典型单元体的尺度和存在性有重要意义。利用随机方法和水量均衡法开发离散网格软件FractureToKarst研究裂隙岩体渗透问题,从理论推导和多元线性回归分析两种方法验证了程序在研究裂隙岩体渗流的尺度效应的可靠性。以此为基础建立了两组正交中等迹线长度的二维裂隙网格,讨论了此类裂隙岩体REV的存在性及尺度与其裂隙间距的关系,并通过统计学的方法求解出渗透系数张量。
Equivalent porous media is often used in rock mechanics to study the hydraulic characteristics of fractured rock mass. The equivalent permeability coefficient is an important parameter in the equivalent method. The scale and existence of typical unit body (REV) determine the reliability of the equivalent permeability coefficient and Effectiveness. Therefore, it is significant to study the scale and existence of typical unitary bodies. The fractal rock mass infiltration problem was developed by using the random method and water balance method FractureToKarst. The reliability of the scale effect of the program in studying the seepage of fractured rock mass was verified by theoretical derivation and multiple linear regression analysis. Based on this, two sets of two-dimensional fracture meshes with orthogonal medium trace lengths were established. The relationship between the existence and the scale of such fractured rock mass REV and its fracture spacing was discussed. The permeability coefficient Tensor.