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裂隙岩体渗透张量是基岩地区地下水研究中非常重要的水文地质参数。基于裂隙岩体渗透张量的基本表达式和矩阵特征值扰动理论,以青岛黄岛地下洞库现场试验成果为例,在查明了岩体中裂隙的空间产状、位置基础上,建立了裂隙渗透性与岩体整体渗透张量之间的定量关系,分析了单条裂隙和单组裂隙渗透张量特征值的扰动问题,提出了优势裂隙渗透性对岩体整体渗透张量贡献的评价方法。研究结果表明,并非岩体中发育的裂隙对渗流都具有均等的作用,而只有优势裂隙组中的优势裂隙在裂隙渗流问题中占主导地位。这些成果对于基岩地区地下水资源开发和评价、地下水污染预测和控制、地下工程渗流计算和控制都具有重要的意义。
Oscillatory rock mass permeability tensor is a very important hydrogeological parameter in groundwater research in bedrock area. Based on the fundamental expressions of the permeability tensor of rock mass and the perturbation theory of matrix eigenvalues, taking the field test results of Huangdao underground cavern in Qingdao as an example, based on the identification of the spatial occurrence and location of fractures in the rock mass, The relationship between fracture permeability and integral permeability tensor of rock mass, the perturbation of the eigenvalues of permeability tensor of single fracture and single fracture are analyzed, and the evaluation method of the contribution of dominant fracture permeability to the overall permeability tensor of rock mass is proposed . The results show that not all fractures developed in the rock mass have an equal effect on the seepage but only the dominant fractures in the predominant fracture group dominate the seepage problem of fractures. These results are of great significance to the development and evaluation of groundwater resources in base rock area, prediction and control of groundwater pollution, calculation and control of seepage flow in underground engineering.