冶勒水电站坝区承压含水层渗透系数的测定

Measurement of Percolation Coefficient in Confilled Aquifer at Damsite Area of Yele Hydropower Station

在冶勒坝区钻孔水文地质试验中，遇到高水头承压含水层，抽（注）水试验无法进行。地质与钻探配合，用溢水试验代替抽水试验，对坝基深部Q'1-3承压水层的渗透系数进行了测定。经分析认为：溢水试验成果与现场抽水试验及试块的渗透试验成果基本一致，可作为地质上确定建议K值的依据。

In Drillhole hydrogeological test at Yele damsite,because high dead confined aquifer is encontered,it is impossible to carry out pumping test. By combination of geology and drilling,percolation coefficient of Q1-3 confined aquifers is measured deep in the dam foundation by overflow test instead of pumping test. The analysis results shows that overflow test results are mainly consistent with that of in-situ pumping test cind permeability test of sample. These results provide biological basis for determing the proposed value K.