江雄水库新建大坝渗漏成因分析与处理

Causes Analysis on Seepage of Newly Built Dam of Tibet Jiangxiong Reservoir and Treatment

摘要:

江雄水库蓄水初期，随着库水位逐渐上升，观测孔内水位高，坝下游陆续出现的渗漏量不断增大，量水堰最大渗漏量达到300 L/s的异常现象，影响大坝安全。通过大坝监测系统、电法探测、连通试验等成果，分析了坝基、绕坝、溢洪道、输水洞等渗漏主因，查找到主要渗流通道，为大坝堵漏处理方案设计提供了决策依据。还提出了安全渗流对保护下游生态有巨大作用的观点。

Abstract:

At initial impoundment period, the water level in observation hole became high, the seepage amount was gradually increasing at the downstream of Jiangxiong reservoir dam and the abnormal phenomena appeared with maximum seepage amount of 300 L/s at the measuring weir, which affect the dam safety. Analysis was made on the major seepage causes of dam foundation, around-the-dam, spillway and water intake tunnel by dam observation system， electricity detection and interconnection test, the main seepage channels found to provide decision basis for dam impermeable scheme. And a view is also presented in this paper that safe seepage has enormous function to protect downstream ecology.