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节理迹长与隙宽的相关性影响节理网络的分布和透水性,最终影响裂隙岩体的水力学特性。为此,结合Sellafield处置库工程,从统计学的角度研究节理迹长和隙宽符合幂律分布时的相关关系,基于离散元软件UDEC分析节理迹长和隙宽的相关性对裂隙岩体水力耦合特性的影响,给出一套考虑节理参数相关性的裂隙岩体水力学计算方法。计算结果表明:节理迹长与隙宽符合幂率分布时,其相关关系呈指数函数形式;考虑两者相关性时,裂隙岩体的渗透率张量及表征单元体积均变大,因此不可忽略节理参数相关性的影响。
The correlation between the joint length and the gap width affects the distribution and water permeability of the joint network and finally affects the hydraulic characteristics of the fractured rock mass. Therefore, combined with the Sellafield repository project, the correlation between the joint length and width of the joint is studied statistically from the perspective of power law distribution. Based on the correlation between joint track length and gap width of discrete element software UDEC, Coupled with the coupling characteristics, a set of hydraulic calculation method for fractured rock mass considering the correlation of joint parameters is given. The calculated results show that the relationship between joint length and gap width is exponential when the correlation between the joint length and the gap width is exponential. Considering the correlation between them, the permeability tensor and the volume of the characterizing unit in the fractured rock mass become larger and can not be ignored Influence of joint parameters on correlation.