基于混合模型的溢流坝参数反演和监控指标拟定  

Inverse analysis of parameters and determination of monitoring index of overflow dam based on hybrid model

作　　者：吕高峰[1] 朱锦杰[1] 吴伟[1] 

机构地区：[1]国家能源局大坝安全监察中心,浙江杭州311122

出　　处：《大坝与安全》2015年第6期37-41,共5页Dam & Safety

摘　　要：以混合模型为基本原理,结合大坝坝顶水平位移实测值,运用有限元分别计算由坝体和坝基引起的坝顶顺河向水平向位移,以此建立溢流坝坝顶顺河向水平位移的混合模型,通过混合模型分别反演坝体和坝基的弹模,并初步拟定监控指标。从计算结果看,实测值和拟合值非常接近,且其复相关系数R为0.892,剩余方差为0.921,说明该混合模型精度较高,在反演坝体坝基弹模和设置监控指标中具有一定的价值,为工程运行提供参考。Taking the hybrid model as the basic principle, FEM combined with measured horizontal dis-placement of dam crest was used to calculate the stream-wise horizontal displacement of dam crest re-spectively caused by dam body and foundation. Then the hybrid model of stream-wise horizontal dis-placement of overflow dam crest was established on these grounds. Finally, the elastic modulus of dambody and foundation were obtained respectively by inversion through the hybrid model, and the monitor-ing index was determined preliminarily. The result showed that, the measured value and fitted valuewere very close, and the multiple correlation coefficient was 0.892, the residual variance was 0.921,which proved the hybrid model had high precision, worthy reference.

关 键 词：混合模型 溢流坝 弹模 反演 监控指标 

分 类 号：TV652.1[水利工程—水利水电工程]