双相介质物理参数反演的进化策略方法

The Methods of Evolution Strategy Inversing the Parameters of Two-Phase Medium

由于物理参数反演问题在很大程度上取决于计算方法的稳定性和收敛性 ,而进化计算方法目前已在一些有关优化计算中得到较为广泛的应用 ,并证明该方法行之有效 .本文先从理论上分析了采用进化策略这种进化计算方法来进行Biot双相介质参数反演的可行性 .并采用进化策略方法对一维Biot双相介质模型的地层物性参数进行反演计算 ,文中给出的数值算例验证了这种进化算法进行参数反演的可行性和稳定性 .

Because dynamic inverse problem mostly depends on the stability and astringency of calculational methods,now Evolutionary Computation method have been used widely in aspect of optimize calculation, and proved effectively. The paper firstly analyzes the feasibility of using Evolutionary Computation method(Genetic Algorithms,Evolution Strategy,Evolution Programming)to inverse the parameter of Biot's Fluid_Saturated Porous Media(FSPM) Model in theory, and apply Evolution Strategy to inverse the parameters of wave equations in 1 D two phase medium. The trial computation examples prove the method feasible.