基于FLAC^(3D)和粒子群优化算法的初始地应力场反演  

Back Analysis of Initial Ground Stress Based on FLAC^(3D) and Particle Swarm Optimization

作　　者：何竹叶 任旭华[1] 刘燕[1] 

机构地区：[1]河海大学水利水电学院,江苏南京210098

出　　处：《水电能源科学》2010年第8期46-48,共3页Water Resources and Power

摘　　要：针对岩体初始地应力场反演分析需采用多次正向计算、效率较低、优化程序与正向数值计算程序需大量耦合等问题,利用FLAC3D内嵌的FISH语言将FLAC3D正向数值计算与粒子群优化算法相结合编写了程序,以山东文登抽水蓄能电站地下洞室的初始地应力场为例,分析了反演的整个过程。结果表明,该法简单易实现、收敛速度较快,精度较高,为岩体初始应力场的反演提供了一种新思路。The back analysis of initial ground stress field needs forward calculation repeatedly and results in low efficiency.Furthermore,it also needs enormous coupling work for development of optimization program and forward numerical simulation code.In order to solve these problems,FISH,which is embedded language of FLAC3D,is applied to compile a program of back analysis for initial stress by combining particle swam optimization algorithm and FLAC3D.Finally,this program is used to analyze initial ground stress field of underground cavern in Wendeng pumped storage station,Shandong Province.The results show that this method is simple and easy to implement,and has rapid convergence rate and high precision.Thus,it provides a new idea for back analysis of rock initial stress field.

关 键 词：FLAC3D 粒子群优化算法 地应力场反演 Particle SWARM Optimization Based Ground Stress Initial 初始地应力场 数值计算程序 抽水蓄能电站 初始应力场 优化程序 岩体 收敛速度 反演分析 地下洞室 新思路 语言 效率 问题 

分 类 号：TK79[动力工程及工程热物理—流体机械及工程] TV7[水利工程—水利水电工程]