基于改进粒子群优化算法的地应力场反演

摘要

为提升粒子群优化算法反演地应力的效率和精度，采用改进粒子群算法，并对随机数进行针对性设置，联合使用MATLAB与FLAC3D ，以沙溪铜矿区的声发射数据为基础进行了算例分析。结果表明，操作流程简单易行，改进后的算法精度高、效率高，对类似工程有一定的参考性。%In order to enhance the efficiency and accuracy of the inversion analysis of initial stress field, the analysis of calculation examples was performed based on the acoustic emission data of Shaxi Copper Mine, by adopting the modified particle swarm optimization(MPSO) with a special set of random numbers, together with MATLAB and FLAC3D. Result shows that the MPSO is characterized by high accuracy and efficiency, as well as simple operation process. It is of certain reference value to the similar engineering.