运用最优化理论 ,通过构造公差准则函数序列 ,在近似可行概念和非线性加速单纯形法的基础上 ,得出了三维非线性位移随机反分析的伸缩保养法 岩体的性态采用弹塑性 开裂模型描述 ,考虑工程中实测位移的随机波动性 ,应用随机反分析的目标函数 非线性迭代采用收敛稳定的子增量变Kp 法 工程实例表明该方法是有效和可行的 Based on the feasible concept and the nonlinear acceleration simplex method, the optimization theory is used to construct the tolerance criterion function sequence. Based on the three-dimensional nonlinear displacement stochastic back analysis, Model description, stochastic volatility of measured displacements in engineering, non-linear iteration of objective function using stochastic back analysis, and convergence and stability of sub-incremental Kp engineering examples show that this method is effective and feasible