摘要
Abstract
Ground stress is the basic load in underground engineering construction,and the multiple linear regression method is often used for inversion,but the essence of this method is the linear combination of different basic stress field components,which fails to reflect the nonlinear relationship of stress and strain in rock mass under complex stress states.In order to solve this problem,a method combining linear inversion and iterative approximation is proposed to improve the accuracy and reliability of inversion.By introducing the strategy of iterative approximation,we expect to deal with the plastic stage of finite element calculation effectively,so as to reveal the real state of the initial geostress field of rock mass more accurately.关键词
地应力/多元线性回归/迭代逼近/综合反演/弹塑性Key words
ground stress/multivariate linear regression/iterative approximation/synthetic inversion/elastoplastic分类
天文与地球科学
