单孔示踪方法测定裂隙岩体渗透性研究

论述了单孔中测定裂隙岩体渗透系数、等效水力了隙宽及静水头的方法与有关的井流理论，单孔稀释定理推广到测定岩体渗透流速、流向等参数方面，推导了钻孔揭露多裂隙组稳定流混合井流理论，分别对吸水、涌水及单裂隙（组）的情况进行了讨论，并且介绍了试验仪器与方法，将单孔示踪方法应用于群孔之中，结合裂隙岩体的走向、倾角、裂隙分布等，确定出研究区域的裂隙岩体中的渗流场分布，该茂成果已应用于对家峡左坝肩裂隙岩体流场的研

Study of Fissured Rock Permeability Measurement by Using Single-well Tracer Method

A single well flow principle for the detection of fissured rock permeability coefficient,equivalent mechanical fissured rock width and hydrostatic level is studied in this paper. Single well dilution logging for detecting the direction, velocity and other hydrogeological coefficient is applied to fissured rocks. The well flow principle of multi fissure group is deduced in detail. Borehole water flowing in or out of the fissure is discussed separately. The equipment and testing method are introduced in this paper. In combination with fissured rock strike,dip angle and distribution seepage flow in fissured rocks is determined by use of single well tracer method for the area under study. The achievements have been applied to seepage flow around the left dam abutment of Liujiaxia dam.[WT5HZ]