标题：Inversion of Initial In-situ Stress Field by the Method of Multivariate Analysis and Engineering Application
作者：Yue, Xiaolei; Li, Yong; Wang, Hanpeng
作者机构：[Yue, Xiaolei] Shandong Jianzhu Univ, Sch Civil Engn, Jinan 250101, Peoples R China.; [Li, Yong; Wang, Hanpeng] Shandong Univ, Geotech & Struct Engn 更多
会议名称：International Conference on Frontiers of Manufacturing and Design Science (ICFMD2010)
会议日期：DEC 11-12, 2010
来源：FRONTIERS OF MANUFACTURING AND DESIGN SCIENCE, PTS 1-4
关键词：In-situ stress survey; Initial in-situ stress field; Inverse analysis;; Multivariate regression analysis; Finite element method
摘要：Based on engineering geological conditions and measured data of the in-situ stress at a hydropower station, 3D geological models under each affecting factor are calculated by means of finite element computing tools ABAQUS and MATLAB. Then, a multivariate regression model is created between the measured and calculated value of in-situ stress at measurement points, and the optimal regression coefficient of the model is found. Consequently, the distributions of initial in-situ stress of this area are obtained. It is the first time to take into account the independence and internal relations among each stress components. Thus, the more reasonable distributions of initial in-situ stress of this area are obtained. The results indicate that the 3D calculating in-situ stress field is reasonable.