[关键词]
[摘要]
将混沌序列优化算法应用在第一类越流系统含水层非稳定流井流问题上,进行抽水试验数据的分析、含水层参数的求解,并就算法的搜索能力和结果与给定含水层各参数取值范围的关系进行探讨。结果表明:①求解越流条件下含水层参数的计算问题能用混沌序列优化算法得到很好的解决;②除越流因数上限取值会降低越流因数搜索结果的准确性外,储水系数、导水系数、越流因数上限取值对算法的搜索能力和搜索结果没有太明显的影响。相较于其他方法,混沌序列优化算法易于编程、运算简单、运算结果不被人为因素干扰等特点更为突出。
[Key word]
[Abstract]
Based on the analytical solution to well flow problem of unsteady flows in the first type leakage aquifer, the chaotic time-series optimization algorithm is employed to analyze the data of pumpling tests to determine aquifer parameters. Numerical simulation is conducted through analysis of the influence of the initial value of aquifer parameters and other factors on the convergence and results of the algorithm. The results show that:①chaotic time-series optimization algorithm can be effectively applied to the calculation problem of aquifer parameters; ②the initial value of leakage factor and the coefficient of storage and conductivity don’t have too much obvious effect on the search and results of the algorithm,except reduce the accurancy of results of leakage factor due to its initial value. Compared with other methods, the chaotic optimization method has such advantages as simple in principle of algorithm, easy to make program and to conduct, and the precision of aquifer parameters calculated is not affected by artificial subjective factors.
[中图分类号]
[基金项目]
国家自然科学基金项目(41302253);青海省(应用)基础研究计划(2014-ZJ-706);中国地质调查局项目( 12120113 009000)