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Stability assessment of Silin powerhouse cavern based on displacement back analysis method

机译：基于位移回分析方法的硅蛋白功率洞穴稳定性评估

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A back analysis procedure synthetically using parameters sensitivity analysis based on orthogonal design variance analysis, support vector regression modeling of nonlinear relation between mechanical parameters and displacement, and a hybrid optimization algorithm of particle swarm optimizer (PSO) and differential evolution (DE), was proposed. Optimum values of elasto-plastic mechanic parameters of rock mass were identified using the back analysis procedure and the measured displacement data. Assigning to the numerical model the optimum values of parameters, numerical simulation of powerhouse construction process was carried out to investigate the reliability of result of back analysis and the stability of powerhouse cavern. The result shows that calculated displacements are in good agreement with the measured, the powerhouse cavern is stable and has a considerable safety margin, and the existing support system can satisfy the need of local stability of powerhouse.
机译：基于正交设计方差分析的基于正交设计方差分析的参数灵敏度分析，提出了一种基于正交设计方差分析的参数灵敏度分析的后分析程序，提出了机械参数与位移之间的非线性关系的回归建模，以及粒子群优化器（PSO）的混合优化算法和差分演进（de）。 。使用后分析程序和测量的位移数据识别岩体弹性塑料机械参数的最佳值。分配了数值模型的参数最佳值，开展了功率施工过程的数值模拟，以研究了后分析结果的可靠性和省电洞穴的稳定性。结果表明，计算出的位移与测量的稳定性稳定，具有相当大的安全保证金，并且现有的支持系统可以满足局部稳定性的稳定性。

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