初始应力的回归与三维拟合

Regression analysis and 3 D fitting of initial stress

初始应力是地下工程围岩稳定与支护结构设计的基本因素之一，本文介绍一种初始应力场的回归拟合方法，该方法考虑了影响初始应力的主要因素。对工程实例地应力场的回归拟合计算表明，该方法回归拟合精度高，可广泛用于工程实践中。

The stress in primary rock is one of the basic factors which decide surrounding stability and support pattern of underground engineering. A method of regression analysis and 3 D fitting of initial stress is explained in this paper, and the prinicple factors that affect the stress of primary rock are considered in this method. The computation of practical engineering example shows this method is highly accurate , and can be used widely in practical engineering.