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《Chinese Journal of Underground Space and Engineering》 2006-06
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Regression Analysis of In-situ Stress for Wudongde Hydropower Station,Jinsha River

AI Kai,HAN Xiao-yu,LI Yong-song(Yangtze River Scientific Research Institute,Wuhan 430010,P.R.China)  
Considering the gravity and tectonic stress as the main factors of in-situ stress of rock mass,a multivariatble regression method based on 3-D FEM direct modeling,is presented in this paper.This method is applied to study the in-situ stress of Wudongde Hydropower Plant site by determining the regression coefficients corresponding to the in-situ stress factors after fitting the stress measured values,so the intial stress distribution is obtained for the rock mass of the whole engineering area.The regression output shows that the calculated stress match the measured data,also the gravity and horizontal tectonic stress are the main factors of the stress field in the project area.
【CateGory Index】: TV221.2
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