乌溪江水电厂右坝绕坝渗流的同位素示踪应用研究

Study on the Leakage of Wuxijiang River Right Dam by Using Isotope Trace Field Survey

结合乌溪江大坝右坝绕坝渗流场的测试，叙述了同位素示踪法在水库现有水位观测孔中测定绕坝渗漏通道的方法．通过天然流场下单孔测定含水层的渗透流速、流向、涌（吸）水量、垂向流、温度、电导率的变化等，对渗漏通道的路径进行了较深入的讨论。

A method for measuring the pathes of the leaks under the dam through the piezometric boreholls by using isotope tracers was stated.In natural groundwater field the coefficient of direction,velocity,current flow,discharge or recharge,temperature,electric conductor and in artificial field the permeability,head of each aquifers and the position of the leakage can be measured in each of boreholes.To test and verify the pathes,supply quanlity,delay time and relationship between the boreholes in the dam,some interconnection experiments between reservoir or boreholes were made.A new method for measusing the pathes of the leaks bypassing the dam of Wuxijiang River by artificial and natural tracers was stated.The reason for the formation of the leakage and seepage under the dam was discussed in detail.The judging condition of the leakage and seepage in a dam was put forward.