摘要
基于某水电站拱坝工程的监测结果,分析该拱坝在首次蓄水期初期的变形、渗流及应力应变等的变化规律和分布特征,进而评判拱坝的运行工作性态。监测结果分析表明,该工程坝体及坝基的变形量较小且正常,应力分布合理且蓄水后变化符合拱坝低水位运行特征,基础渗压分布合理,渗流量总体较小。变形、渗流及应力应变实测值均在设计控制指标范围内,因此可判断该工程拱坝在首次蓄水期初期的工作性态正常,基本满足设计要求。
Based on the monitoring results of the arch dam of a hydropower station,the variation law and distribution characteristics of deformation,seepage,stress and strain of the arch dam during initial impoundment period are analyzed,then its working behavior is evaluated.Monitoring results show that the deformation of dam body and dam foundation is small and normal,the stress distribution is reasonable and its variation after impoundment accords with the operation characteristics of the arch dam under low water level.As well,the seepage pressure distribution of foundation is reasonable,and the seepage flow is small.The values of deformation,seepage,stress and strain are all within the range of design control indicators.Therefore,it can be judged that the working behavior of the arch dam during initial impoundment period is normal and basically meets the design requirements.
作者
陈锴
CHEN Kai(Large Dam Safety Supervision Center,National Energy Administration)
出处
《大坝与安全》
2025年第2期41-46,共6页
Dam & Safety
关键词
首次蓄水期
安全监测
设计控制指标
工作性态
initial impoundment period
safety monitoring
design control indicator
working behavior
