某高海拔土石坝蓄水安全监测资料分析  

Analysis of Water Storage Safety Monitoring Data of an Earth-rock Dam in High Altitude Area

作　　者：旺加 杨军 吕梽槟 田振华[2,3] Wangjia;YANG Jun;Lü Zhibin;TIAN Zhenhua(Laluo Hydro-junction and Irrigation District Administration of Tibet Autonomous Region,Lhasa 851414,Tibet,China;China Institute of Water Resources and Hydropower Research,Beijing 100038,China;Beijing IWHR Corporation,Beijing 100038,China)

机构地区：[1]西藏自治区拉洛水利枢纽及灌区管理局,西藏拉萨851414 [2]中国水利水电科学研究院,北京100038 [3]北京中水科工程集团有限公司,北京100038

出　　处：《水力发电》2022年第4期104-110,共7页Water Power

基　　金：国家重点研发计划(2018YFC1508502)。

摘　　要：对蓄水安全监测资料进行及时有效分析,是提高水电站设计、施工和管理的技术水平的重要途径。以西藏拉洛水电站为例,从原型观测资料出发,结合有限元模拟,对高海拔地区土石坝监测项目及仪器布设、资料分析方法等进行研究,重点探究坝体填筑及蓄水运行后水位升降对沉降变形、渗流渗压与应力分布等安全监测资料的影响。结果显示,大坝基础及心墙渗流微小,坝体坝坡等部位位移及变形均较小,基本趋于稳定。Timely and effective analysis of water storage safety monitoring data is an important way to improve the technical level of design,construction and management of hydropower stations.Taking the Laluo Hydropower Station in Tibet as an example,the monitoring items,instrument layout and data analysis method of earth-rock dam in high altitude area are studied based on prototype observation data and combined with finite element simulation,and the influences of water level fluctuation caused by dam body filling and reservoir impoundment on safety monitoring data such as settlement deformation,osmotic pressure and seepage,and stress distribution are mainly explored.The results show that the seepage of dam foundation and core wall is barely small,and the displacement and deformation of dam body and dam slope are small and basically tend to be stable.

关 键 词：高海拔地区 土石坝 蓄水 监测资料 沉降变形 渗流渗压 应力分布 分析 拉洛水电站 

分 类 号：TV698.1[水利工程—水利水电工程]