Hydrogeologic Parameters of Pumping Test for Incomplete Radial Well under Unsteady Flow

There are not many methods for solving hydrogeologic parameters of radial well pumping test.Therefore,an imitation Theis formula is applied to solve pumping test parameters of incomplete radial well under unsteady flow.And the well flow formula is deduced and solved by trial calculation method with VB program.Then the process of calculation water level is compared with that of observed water level.The results of aquifer parameters are satisfactory.Finally,taking the pumping test of Tailan River in XinJiang for an example,RMSE,MD,CRM and EF are calculated.The results show that the process of calculation water level fits observed process very well;the obtained hydrogeologic parameters are close to that of Neuman method and the previous research.