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本文论述了钻孔揭露裂隙岩体与裂隙斜交情况下通过示踪方法测定裂隙渗透性及其参数， 将稀释测井与示踪测井方法相结合建立了井流理论． 推导了双井系统中单裂隙岩体的渗透系数、等效水力隙宽、静水头、影响半径及水力坡度等的计算公式， 并将此研究成果应用于大坝的渗流场探测之中．
This paper discusses the determination of fracture permeability and its parameters by the tracer method when the borehole reveals fractured rock masses and cracks, and combines the dilution logging method with the trace logging method to establish the well flow theory. The formulas for permeability coefficient, equivalent hydraulic gap width, static head, influence radius and hydraulic slope of single fractured rock mass in the twin well system are deduced, and the research results are applied to the seepage field detection of the dam.