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Study on step pumping test inversion of hydrogeological parameters based on genetic algorithm method
Pages: 51-55
Year: Issue:  9
Journal: Geotechnical Investigation & Surveying

Keyword:  Pumping testgenetic algorithmhydrogeological parameterstep pumpingparameter setting;
Abstract: In order to make full use of the pumping test data,step pumping hydrogeological parameter is calculated by genetic algorithm.Comparison study on the selection methods,crossover methods and mutation methods is performed through an ideal model.It is proved that the calculation is more precise and stable under the parameter setting of stochastic uniform choosing,scattered crossover,constraint dependent mutation method.The genetic algorithm is proved superior to traditional curve fitting method and trail method.The method is applied in the Beijing emergency water source hydrogeological parameter calculating and derived that T is 44.64m2/d and μ*is 9.30 × 10-4.
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