江苏庆安水库成库条件分析

Analysis on Formation Conditions of Qing an Reservoir in Jiangsu

基于水文地质与工程地质勘探、物探、数值模拟等手段,分别对江苏庆安水库的邻谷、库首、库区等渗漏的可能性进行分析,以论证庆安水库成库条件的可靠性。研究结果表明:(1)在正常蓄水位为344 m时,庆安水库基本不存在永久邻谷渗漏问题;(2)通过综合分析对比,选择上坝址为推荐坝址,上坝址在采取防渗措施后,库首渗漏量基本可控;(3)根据模型渗漏量综合估算,在水库正常蓄水位344 m时,库区渗漏严重,须采取工程防渗处理措施;(4)库坝区不存在其他制约水库建设的重大工程地质问题,庆安水库基本具备成库条件。

In combination with hydrogeology and engineering geological exploration,geophysical prospecting,numerical simulation and other means,this study separately makes analysis on seepage possibility of adjacent valley,head and reservoir area of Qingan Reservoir in Jiangsu Province.It demonstrates the reliability of reservoir-forming conditions of Qingan Reservoir.The results show that:(1)there is no permanent adjacent valley leakage in Qingan Reservoir when the normal water level is 344m.(2)Through comprehensive analysis and comparison,the upper dam site is selected as the recommended dam site.After taking anti-seepage measures at the upper dam site,the seepage at the reservoir head can be basically controlled.(3)According to the comprehensive estimation of model leakage,when the normal water level of reservoir is 344m,the reservoir area leaks seriously,so engineering seepage prevention measures must be taken.(4)There are no other major engineering geological problems restricting reservoir construction in the reservoir dam area,and Qingan Reservoir basically has reservoir-forming conditions.