范厝水电站厂房坝段异常扬压力分析  

Analysis of Abnormal Uplift Pressures under the Powerhouse Section in Fancuo Hydropower Station

作　　者：肖小玲 万磊 施玉群[2] 

机构地区：[1]福建省金湖电力有限责任公司,福建将乐353300 [2]武汉大学水利水电学院,湖北武汉430072

出　　处：《水电与新能源》2016年第9期1-4,12,共5页Hydropower and New Energy

基　　金：国家自然科学基金项目(51079114);中央高校基本科研业务费专项(2042016kf1081);广东省水利科技创新项目(2016-06)

摘　　要：采用灵敏度现场测试、变化规律定性分析、统计模型定量分析等方法,对范厝水电站大坝厂房坝段坝基防渗帷幕后各测压孔扬压水位异常现象进行了综合分析。分析表明,这些测压孔扬压水位异常,主要是由于进水口部位混凝土内存在与上游水位和测压孔连通的细小裂缝,与上游水位之间不存在明显的关联性,因而不代表厂房坝段坝基防渗帷幕存在缺陷或已被削弱。In the powerhouse dam section of Fancuo Hydropower Station, abnormal foundation uplift pressures are ob- served in pressure holes behind the seepage-proof curtain. Based on the in-situ sensitivity testing, qualitative change a- nalysis, and quantitative statistical analysis, this abnormality problem is analyzed. The results show that small fractures exist in the intake concrete mass and connect the reservoir water and the pressure holes. A weak correlation is found be- tween the reservoir water level and the pressures, which means that the seepage-proof curtain still works well without damages or weakness.

关 键 词：大坝 扬压力 测压孔 异常 成因分析 

分 类 号：TV649[水利工程—水利水电工程]