某砾石土心墙坝施工期安全监测分析  

Analysis of the safety monitoring of a clay water cut-off wall of the gravel dam during construction period

作　　者：陈科文[1] 李轩 

机构地区：[1]四川大学水利水电学院,四川成都610065 [2]长江三峡技术经济发展有限公司,湖北宜昌443133

出　　处：《吉林水利》2008年第12期13-16,共4页Jilin Water Resources

摘　　要：文章以某心墙坝的实际监测情况为例,结合监测仪器设计布置对仪器的运行情况进行分析。根据观测资料对施工期心墙孔隙水压力、应力以及沉降变形观测分析后得到:心墙在施工期产生的高孔隙水压力与填筑进度以及土料含水量大小密切相关,施工期将土料的含水量控制在最优含水量附近对心墙填筑有利。鉴于坝体沉降变形观测数据较其实际沉降量偏大,建议尽量对测斜管附近土料夯实以缩小观测数据与实际之间的差值。The paper analyses the operation of the equipment, taking the actual monitoring of the water cut--off wall as an example, and combining with the monitoring equipment design layout, according to the observation data of pore water pressure, stress, and settlement deformation of the wall during construction period. The result shows that the wall has a high pore water pressure which is closely related with filling progress, the soil moisture content, and the earth moisture controlled around the optimum water content during construction period is benefit for the filling of the wall. In view of the dam settlement observation data is bigger than the actual settlement, as far as possible compacted the earth around the inclinometer to reduce the difference between observational data and the actual.

关 键 词：心墙坝 孔隙水压力 应力 沉降 最优含水量 

分 类 号：TV641.25[水利工程—水利水电工程]