乌江渡水电站坝体接缝变形监测分析  

Analysis on the Joint Deformation Monitoring Data for Wujiangdu Arch Gravity Dam

作　　者：马传彬 文富勇 MA Chuanbin;WEN Fuyong(PowerChina Zhongnan Engineering Corporation Limited,Changsha 410014,China;Hunan Provincial Key Laboratory of Hydropower Development Key Technology,Changsha 410014,China)

机构地区：[1]中国电建集团中南勘测设计研究院有限公司,长沙410014 [2]水资源利用关键技术湖南省重点实验室,长沙410014

出　　处：《西北水电》2022年第4期85-89,共5页Northwest Hydropower

摘　　要：坝体接缝变形是混凝土拱形重力坝安全稳定的重要监测效应量。结合混凝土拱形重力坝不同结构部位受力特点,对乌江渡水电站1983—2013年间的坝体接缝变形监测数据分析表明:坝体纵、横缝变形测值均随坝址气温呈现明显的年周期性变化,变形测值逐年和多年变幅相对较小且趋于稳定,能够反映混凝土拱形重力坝接缝变形的发展规律;另外,针对坝体重点接缝变形部位且可修复或更换的监测仪器提出了建议,可为大坝日常观测维护提供参考。Dam joint deformation is an important factor that affect the effectiveness of monitoring for the safety and stability of arch gravity dams.Combined with the stress characteristics of different structural parts of concrete arch gravity dam,analysis of dam joint deformation monitoring data of Wujiangdu Hydropower Station from 1983 to 2013 indicates that the longitudinal and transverse joint deformation of the dam body shows an obvious annual periodic change with the temperature at the dam site,and the annual variations of deformation measurements are relatively small and tend to be stable,which reflects the development law of joint deformation of concrete arch gravity dam.In addition,some suggestions are given for the monitoring instruments which can be repaired or replaced in key joint deformation parts of dam body,providing reference for daily dam observation and maintenance.

关 键 词：混凝土拱形重力坝 坝体接缝变形 监测分析 乌江渡水电站 

分 类 号：TV698.1[水利工程—水利水电工程]