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从函数优化问题的角度出发,采用模拟退火算法对抽水试验资料进行分析,推求符合实际含水层特性的水力参数。并针对模拟退火算法收敛速度慢的缺点,采取了增加约束条件、设置内阀值和记忆功能等措施,以提高标准模拟退火法的收敛速度。实例分析结果表明,该方法在推求含水层参数中是可行的,且无需长时间的抽水试验资料,求解过程在计算机上完成,省时高效。同时,结合实例的结果分析并给出了影响SA算法收敛速度的几个因素。
From the perspective of the function optimization problem, the simulated annealing algorithm is used to analyze the pumping test data to deduce the hydraulic parameters in line with the actual aquifer characteristics. Aiming at the shortcoming of the slow convergence speed of simulated annealing algorithm, some measures such as adding constraints, setting internal threshold and memory function are taken to improve the convergence speed of standard simulated annealing method. The case study shows that the proposed method is feasible in deriving aquifer parameters and does not require a long time of pumping test data. The solving process is completed on the computer, saving time and energy. At the same time, several factors that affect the convergence rate of SA algorithm are analyzed and presented based on the results of examples.