沙溪口大坝19号坝段廊道裂缝成因分析及影响  

Cause analysis and effect of gallery cracks on dam block 19 at Shaxikou dam

作　　者：吕永宁[1] 李涛[1] 林潘斌 黄剑文 

机构地区：[1]国家电力监管委员会大坝安全监察中心,浙江杭州310014 [2]中电(福建)电力开发有限公司,福建南平353000

出　　处：《大坝与安全》2007年第4期36-38,50,共4页Dam & Safety

摘　　要：近年来,发现了19号坝段排水廊道的裂缝,第二次大坝定期检查把裂缝成因及其影响列为专题研究项目之一。有限元结果表明,正常情况下裂缝不可能出现。通过复查施工记录知裂缝出现在施工期,根据地质资料和施工期温度监测资料,分析探讨了裂缝成因及其对大坝安全的影响。Cracks on drainage gallery at dam block 19 were found recent years. The cause of cracks and its effects to dam safety was listed as a special item in the second periodic dam inspection. According to the results of FEM, cracks would not appear under normal conditions. It was found that the cracks appeared during construction by re-referring to construction records. The cause of cracks and its effects to dam safety were analyzed according to geological data and temperature monitoring data in construction.

关 键 词：裂缝成因 裂缝处理 温度应力 安全监测 有限元法 沙溪口大坝 

分 类 号：TV698.2[水利工程—水利水电工程]