基于人工神经网络的初始地应力场三维反分析

通过对初始地应力场的计算方法的回顾，结合有限变形理论和人工神经网络理论，提出基于人工神经网络的初始地应力场三维反分析方法。该方法综合了目前初始地应力场计算方法的优点，并考虑了我种因素对地应力场分布的影响。实例表明，按本文提出方法模拟的初始地应力场较为合理，且其精度也较高。此外，由于考虑了断层对初始地应力场的影响，可较好地解释实测地应力值分散的原因。

ANN-Based 3-D Back Analysis of Initial Stress in Rock Masses

The methods for calculation of the initial earth stress in rock masses are reviewed. In combination with the theory of Fast Lagrangian Analysis of Continua and Artificial Neural Network (ANN), a new approach is proposed for the calculation of the initial earth stress. Based on the 3 D FEM, the new approach integrates the merits of other methods and takes into account the factors affecting the initial stress. A case study is given to show the reasonability of the present method. In consideration of the influence of faults on the initial stress, the approach may help reveal the distribution of measured initial earth stress.