The Improved Trial Method of Hydrogeological Parameters Inversion by Using Single Well Recharge Formula

Abstract

Based on the related theory under recharge condition, the trial method solving the hydrogeological parameters of unsteady flow by single well recharge test according to Theis Formula can be gotten. Integrating the cubic spline interpolation curve of the parameters into the said trial method, the improved trial method of inversion hydrogeological parameters is worked out by using single well recharge formula. In this method, the cubic spline interpolation curve is constructed from three groups of initial adjacent comparison points at first. Then the fussy trial process of the traditional trial method can be replaced by line-line intersection. It can be seen from the practical verification of the data of underground water manual recharge test somewhere in Xi’an City that the calculation steps here are greatly simplified comparing to the traditional trial method. And the calculation result is basically the same with the existing data, which shows that this method is simple and effective.