REGRESSION ANALYSIS OF IN-SITU STRESS FIELD IN UNDERGROUND POWERHOUSE AREA OF ONE HYDROPOWER STATION
Based on the measured data of in-situ stress and engineering geological conditions, three-dimensional regression calculating model of the in-situ stress in an underground powerhouse zone is established. It takes into account the actual stratigraphic distribution as well as the fault. The optimal regression coefficient of in-situ stress is obtained through multiple regression method and three-dimensional numerical calculation. The initial in-situ stress in underground powerhouse zone is regressed accurately. The calculated result shows the magnitude and orientation of the principle stress obtained from regression analysis is closed to the measured data. It provides a rational three-dimensional initial in-situ stress field for excavating simulation and analysis of long-term stability of the underground powerhouse. Furthermore, the orientation of maximum principal stress parallels to the powerhouse axes. This result also validates that the design is rational in underground zone of the hydropower station.
WEN-DONG YANG QIANG-YONG ZHANG XIU-YONG YU GANG WANG YUAN LI
Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, 250061, P.R.China
国际会议
The 7th International Symposium on Rockburst and Seismicity in Mines(2009年第七届国际岩爆与微振动性学术研讨会)
大连
英文
593-598
2009-08-21（万方平台首次上网日期，不代表论文的发表时间）