摘要
水电站边坡是否稳定直接影响工程运行期坝址区安全生产,对整个水电站的发电效益也至关重要。某水电站在施工过程中,形成了包括左岸的厂房边坡和缆机边坡、右岸的坝肩边坡共3个主要高边坡,在对坝址区高边坡所获取的实测安全监测资料进行分析的基础上,指出该水电站边坡不同高程部位变形存在以下规律:即坡脚最大、坡中次之、坡顶最小;对同一区域垂直河流向的月累计位移变化速度和月累计位移量可用来量化边坡发生滑坡的条件。另外,边坡位移量与降雨存在直接关系,但有一定的滞后性。通过对该水电站坝址区高边坡安全监测资料分析,可为坝址区边坡变形预测和预警提供依据。
Whether the slope of a hydropower station is stable directly affects the safety of the dam site during the operation period of the project,and it is also crucial to the power generation efficiency of the entire hydropower station.During the construction of a certain hydropower station,three main high slopes including the power plant slope and cable machine slope on the left bank and the dam shoulder slope on the right bank were formed.The measured safety monitoring data obtained on the high slope in the dam site area were carried out.Based on the analysis,it was analyzed that there were regular deformations at different elevations of the slope of the hydropower station.The slope foot was the largest,the slope was the second and the slope top was the smallest.The monthly cumulative displacement change rate and monthly cumulative displacement of the vertical river direction in the same area could be used to quantify conditions under which a landslide occurs.In addition,the slope displacement was directly related to rainfall,but there was a certain lag.Analysis of the high slope safety monitoring data in the dam site area of the hydropower station can provide a basis for slope deformation prediction and early warning of the dam site area.
作者
肖国年
李铮
李宏恩
李斌
狄洪伟
吴闽
Xiao Guonian;Li Zheng;Li Hongen;Li Bin;Di Hongwei;Wu Min(East China Yixing Pumped Storage Power Co.,Ltd.,Yixing 214205,China;Nanjing Hydraulic Research Institute,Nanjing 210029,China)
出处
《能源与环保》
2020年第3期54-60,76,共8页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
国家电网公司科技项目(SGXYYX00JHJS1800145)
中央级公益性科研院所基本科研业务费项目(Y717012,Y717013)
广西重点研发计划(桂科AB17195073)。
关键词
实测资料
水电站
高边坡
边坡变形
位移量
降雨
measured data
hydropower station
high slope
slope deformation
displacement
rainfall
