土坝除险加固安全复核及套井回填粘土防渗技术应用  

Safety Review and Application of Casing Well Backfill Clay Anti-seepage Control Technology for Earth-fill Dam Reinforcement

作　　者：史天波 陈文斌[2] 

机构地区：[1]贵州中水建设管理股份有限公司,贵州贵阳550002 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《浙江水利水电学院学报》2017年第4期36-40,共5页Journal of Zhejiang University of Water Resources and Electric Power

基　　金：国家科技支撑计划项目(2015SXC21P35);中央高校基本科研业务费专项基金(37809506)

摘　　要：团结水库大坝设计标准低、施工质量差和运行维护落实不到位等,在高水位蓄水运行中,存在坝顶高程不满足防洪标准、坝体渗漏和坝基坝肩接触段渗漏等问题,且呈加剧趋势.为消除水库安全隐患,经实地踏勘和钻芯取样,结合大坝安全复核结果,优选坝顶培厚增高与套井回填粘土防渗相结合的除险加固修复方案.防渗加固处理后,大坝防洪标准、坝体渗流和抗滑稳定性等特性指标均满足规范要求,大坝渗漏问题得到有效控制.The problems of the crest elevation cannot meet the flood control standard,and the leakage exists both in the dam body and the contact belt at dam foundation and abutment and in increasing trend in the dam of Tuanjie Reservoir,which were caused by low design standard,poor construction quality,unplaced operation and poor maintenance measures and other reasons. In order to eliminate the leakage problems of the reservoir,combined with the dam safety review results,the field surveying and drill core sampling are conducted,the anti-seepage reinforcement scheme with increasing crest＇s height and thickness as well as casing well backfill clay anti-seepage has been adopted. After dam reinforcement treatments,the flood control standards,dam seepage characteristics and anti-sliding stability and other indicators can meet the regulatory requirements,and the dam leakage problems have been successfully processed.

关 键 词：坝体渗漏 套井回填 渗透比降 防渗加固 

分 类 号：TV641.2[水利工程—水利水电工程]