大岗山水电站运行初期拱坝工作性态分析  

Analysis on Initial Operational Characteristics of Arch Dam,Dagangshan Hydropower Station

作　　者：王继刚 汤国庆 

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]国电大渡河大岗山水电开发有限公司,四川省石棉县625409

出　　处：《西北水电》2017年第6期108-111,121,共5页Northwest Hydropower

摘　　要：大岗山水电站自2014年底导流洞下闸蓄水以来,拱坝在正常水位下运行1 a多,其工作性态对验证建筑物是否满足设计要求及指导后期运行具有重要意义。笔者对该拱坝运行初期工作性态进行了初步分析,主要内容包括坝体变形、横缝增开度、坝体应力应变、坝体温度场、基础渗流等。历经2个汛期,大岗山水电站库水位在死水位与正常蓄水位之间往复变化,大坝呈现出良好工作状态,坝体变位规律良好,应力分布正常,实测坝体混凝土温升符合一般规律,坝基及两岸渗控系统运行良好,扬压力小于设计值。The arch dam of Dagangsha Hydropower Station has been operating for over 1 a at normal storage level since impoundment. Its operating characteristics is significant for verifying whether the structure can satisfy design requirement and guiding future operation as well. The initial operating characteristics of the arch dam,in the paper,are analyzed preliminarily. The analysis includes dam body de- formation, opening degree of transverse joints, stress and strain of the dam body, temperature field of the dam body, foundation seepage, etc. With experience of two flood seasons,the storage level of Dagangshan Hydropower Station fluctuates between dead level and normal storage level in cycle. The arch dam operates in good condition,the law of the dam deformation and displacement is excellent and the stress distribution is at normal. The measured temperature rise of the dam concrete complies with normal law. The seepage control systems for dam foundation and both banks operate well and the uplift pressure is lower than the design one.

关 键 词：拱坝 运行初期 工作性态 大岗山水电站 

分 类 号：TV737[水利工程—水利水电工程]