摘要
水文地质参数的反演是一个复杂的非线性优化问题,针对标准模拟退火算法收敛速度慢的缺陷,提出了反演水文地质参数的改进模拟退火算法。采取了设置内阀值、增加约束条件和记忆功能等措施,以提高标准模拟退火算法的收敛速度。实例分析结果表明,改进模拟退火算法在水文地质参数反演和含水层隔水边界的识别问题中不仅是可行的,而且求解精度较高。同时,结合实例的结果分析并给出了影响算法收敛性能的几个因素。
The problem of hydro-geological parameters identification is actually a complex nonlinear program. With the limit of the slow convergence of the standard simulation-annealing algorithm, a modified simulation-annealing algorithm for the identification of hydro-geological parameters is proposed in this paper. Some strategies such as adding supplement constraint to the variables, setting up inner valve value and adding memory function in the inner loops are taken to quicken the convergence of the standard simulation anneal algorithm. Application of the method in practice shows that the proposed method is applicable to hydro-geological parameter and aquifer impervious boundary identifications with high accuracy. Additionally, several factors affecting the convergence of the algorithm are analyzed in the case study.
出处
《中国农村水利水电》
北大核心
2005年第9期5-8,共4页
China Rural Water and Hydropower
基金
中国科学院知识创新工程重要方向性项目(KZCX3-SW-428)
关键词
改进模拟退火算法
反演
水文地质参数
隔水边界
参数识别
modified simulation annealing algorithm
inverse problem
hydro-geological parameter
impervious boundary
parameter identification
