水库大坝渗流问题及防渗措施  

Seepage Problems and Seepage Control Measures of Reservoir Dam

作　　者：郝雷 庄作义 HAO Lei;ZHUANG Zuoyi(Linyi Water Conservancy Engineering Office,Linyi 276000,China)

机构地区：[1]临沂市水利工程处,山东临沂276000

出　　处：《河南水利与南水北调》2023年第7期101-102,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：渗流一直以来是影响水库大坝安全的重要问题,主要影响因素包括地质条件差、坝基岩体不连续或是坝体填筑材料。目前主要的处理措施包括在基础下设置灌浆帷幕、在黏土芯接触面设置反滤层、坝体下游设置排水沟、坝址处设置防渗墙等。由于基础材料力学性能不同、水力压裂、不均匀沉降等问题,坝体易形成裂缝并进一步加剧渗流问题,形成渗流通道,故预防水库大坝渗流的关键点就在于排水。Seepage has always been an important problem affecting the safety of reservoir dams.The main influencing factors include poor geological conditions,discontinuity of dam foundation rock mass or dam filling materials.At present,the main treatment measures include setting up the grouting curtain under the foundation,setting up inverted filter layer on the contact surface of clay core,setting up drainage ditch downstream of the dam body,and setting the anti-seepage wall at the dam site.Due to the different mechanical properties of basic materials,hydraulic fracturing,uneven settlement and other problems,the dam body is prone to form cracks and further aggravate the seepage problem,forming seepage channels.Therefore,the key point to prevent seepage of the reservoir dam is drainage.

关 键 词：渗流 水库大坝 水力压裂 排水 

分 类 号：TV697.3[水利工程—水利水电工程]