三板溪面板堆石坝主坝沉降资料分析  

Settlement Data analysis of Sanbanxi Concrete Face Rockfill Dam

作　　者：张玉平 黄文萃 ZHANG Yuping;HUANG Wencui(Hunan Wuling Power Technology Corporation,Changsha 410000,China)

机构地区：[1]湖南五凌电力科技有限公司,湖南省长沙市410000

出　　处：《水电与抽水蓄能》2022年第1期99-104,共6页Hydropower and Pumped Storage

摘　　要：三板溪水电站大坝监测系统已经正常运行13年,主要采用人工几何水准测量了解大坝变形量和运行状况,对大坝进行沉降变形监测是为了及时掌握大坝的运行状态,如有发现异常情况,及时做出有效措施,确保大坝安全运行。利用沉降观测资料,分析三板溪水库大坝多年的沉降数据,绘制沉降过程线,沉降分布图及测点沉降回归拟合曲线。通过沉降资料分析,找到了年沉降量与库水位的变化的对应关系,而且其监测数据表明,主坝各坝段间存在不均匀沉降现象,年沉降量与库水位变幅,呈正相关性;特别是库水位达到460m以上后,月沉降量明显增大一点。The dam monitoring system of Sanbanxi Hydropower Station has been in normal operation for 13 years.The method of manual geometric leveling is mainly used to evaluate the deformation extent and the running status of the dam in order to ensure the dam operation safety.By analyze the settlement process line,the settlement distribution map and the settlement regression fitting curve,the relationship between the annual settlement and water level of the reservoir is found.The measurement data still show the uneven settlement occurs between the main dam sections and there is a positive correlation between year's settlement and the reservoir water level.Especially,monthly settlement dramatically increased when the water lever is over 460 meters.

关 键 词：三板溪水电站 混凝土面板堆石坝 沉降量 

分 类 号：TV641.4[水利工程—水利水电工程]