ISSN 1671-1092 CN 33-1260/TK

大坝与安全 ›› 2015 ›› Issue (6): 37-.

• 资料分析 • 上一篇    下一篇

基于混合模型的溢流坝参数反演和监控指标拟定

吕高峰,朱锦杰,吴   伟   

  1. 国家能源局大坝安全监察中心,浙江 杭州,311122
  • 收稿日期:2014-12-15 出版日期:2015-12-08 发布日期:2015-12-08
  • 作者简介:吕高峰(1987- ),男,浙江临安人,工程师,主要从事大坝安全监测与土石坝及岩土工程数值计算工作。

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

LV Gao-feng, ZHU Jin-jie and WU Wei   

  1. Large Dam Safety Supervision Center, National Energy Administration
  • Received:2014-12-15 Online:2015-12-08 Published:2015-12-08

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。

关键词: 混合模型, 溢流坝, 弹模, 反演, 监控指标

Abstract: Taking the hybrid model as the basic principle, FEM combined with measured horizontal displacement of dam crest was used to calculate the stream-wise horizontal displacement of dam crest respectively caused by dam body and foundation. Then the hybrid model of stream-wise horizontal displacement of overflow dam crest was established on these grounds. Finally, the elastic modulus of dam body and foundation were obtained respectively by inversion through the hybrid model, and the monitoring index was determined preliminarily. The result showed that, the measured value and fitted value were 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.

Key words: hybrid model, overflow dam, elastic modulus, inverse analysis, monitoring index