摘要
杨家洞水库位于湖南省新田县,属碳酸盐岩强岩溶发育区。由于此水库存在多处严重渗漏,为了提高水库的防洪、蓄水、灌溉等能力,特通过开展水库库盆及周边地区岩溶水文地质调查和水文地质钻探工作,并辅以连通试验,查明了杨家洞水库的渗漏类型和渗漏位置并估算了水库溢洪道垭口段的渗漏量。结果表明,水库溢洪道垭口段、溢洪道至副坝段、分隔堤至副坝段存在渗漏,主坝西侧段发生渗漏的可能性较大,溢洪道垭口段渗漏量大于114.2l/s。针对本水库渗漏情况,认为灌浆帷幕是最重要的防渗措施,另外应结合采用截水墙、堵洞、铺盖等进行防渗。
Yangjiadong reservoir is located in Xintian county of Hunan province,this areas have the characteristic of karst strongly development.Due to the existence of multiple serious leakages of reservoir,the reservoir can＇t achieve a positive effect towards the flood control,irrigation and water storage,so many scientific methods,including the hydrogeological survey,hydrogeological drilling and in-situ connectivity experiment,were put in the reservoir＇s basin and the surrounding areas to get the leakages of reservoir solved,the leakages type and location have been identified and the amount of leakages of reservoir situated in the puerto of spillway have also been estimated.The results suggested the leakages mainly appeared in three sections of the spillway,the first section is from the separation of dike to the auxiliary dam,and the rest two sections respectively is the puerto and auxiliary dam of spillway.There is a greater possibility of leakage at the west side of the main dam section and leakage amount can achieve more than 114.2l/s in the section of spillway＇s puerto.To solve the leak problem of reservoir,the grouting curtain is considered of the most important approach for seepage control,the effective methods of the cutoff wall,caulking and beding should be carried on at the same time to prevent leakage.
出处
《海洋湖沼通报》
CSCD
北大核心
2016年第5期69-77,共9页
Transactions of Oceanology and Limnology
基金
湖南省新田县杨家洞水库综合岩溶水文地质调查(项目编号:2002371320017)
湘江上游岩溶流域1:5万水文地质环境地质调查(项目编号:121201107000150003)资助
关键词
杨家洞水库
岩溶发育
水文地质
渗漏类型
Yangjiadong reservoir
karst development
hydrogeology
the leakage type
