3D-Numerical Back Analysis of Tectonic Stress Field in Dam Site of Hydropower Project
详细信息
- 责任者：Zhou Hongfu (Chengdu Institute of Geology & Mineral Resources ; Chengdu 610081 ; China) ; Nie Dexin
- 刊名：Journal of Jilin University
- 出版年：2012
- 卷期：42(3)
- 关键词：工程地质条件 ; engineering geological conditions ; 构造应力场 ; tectonic stress field ; 坝 ; dams
- 页码：p.785-791
- 图表：3 illus., 5 tables, 11 refs.
- 分类号：1702
- issnNo：ISSN1671-5888
- isbnNo：CN22-1343/P
摘要
A back analysis for tectonic stress field in dam site of hydropower project is implemented by using three-dimensional FEM base on locale investigation and stress testing.It can be find out the reasonable numerical values and direction of boundary loads by contrasting the principal stresses between calculation and tested in-situ at the points for stress fitting by means of applying boundary loads with a different values and directions to three-dimensional model.The results from back analysis are regarded as the value and the direction of tectonic stress field in this region.The results show that the major principal stress σ1 is 6-7 MPa and its direction is S50°-60°E and minor principal stress σ3 is 3-4 MPa in direction of N50°-60°E in dam site of hydropower station.