粘土心墙堆石坝施工初期渗流控制及渗压监测  

Seepage control and seepage pressure monitoring of clay core rockfill dam in early construction period

作　　者：马能武[1] 唐培武 葛培清 李家仁[1] 李林[1] 

机构地区：[1]长江空间信息技术工程有限公司,湖北武汉430010 [2]华能澜沧江糯扎渡水电工程筹建处,云南普洱665625

出　　处：《人民长江》2010年第20期82-85,共4页Yangtze River

摘　　要：糯扎渡水电站初期施工中的基坑防渗问题,采用了由上、下游围堰防渗墙及掺砾粘土心墙(包括灌浆帷幕)组成渗控系统的实施方案。从各部位渗压监测结果分析,各项施工中的防渗措施均达到了预期的理想效果,也表明了所布设的监测仪器分布合理、工作状态良好,保证了初期的施工安全。监测中反映出心墙内渗压值偏高的现象,经分析论证,认为是与心墙填筑高密实度有关,而从其他监测仪器所反映的工作状态,证明心墙(含垫层与灌浆帷幕)的防渗效果很好。In the early construction period,the seepage control system for foundation pit of Nuozhadu Hydropower Station consisted of cut-off walls in upstream and downstream cofferdams,and dam clay core wall mixed with gravels.The seepage pressure monitoring data demonstrates that desired effects are obtained through the seepage control measures;the layout of monitoring instruments is proper and with good working status,which ensures the safety of early construction.The seepage pressure values in the core wall are found in a higher level,which is analyzed and considered to be related with its filling density.However,the results from other monitoring instruments indicate that the seepage control of core wall is very effective.

关 键 词：初期施工防渗 渗流控制 渗压分布 粘土心墙 糯扎渡水电站 

分 类 号：TV698[水利工程—水利水电工程]