中文摘要：

提出了一种分析含水层抽水试验中水位恢复数据的新方法。在方法的建立过程中，考虑了地下水位在上升和下降过程中，含水层的的释水系数和贮水系数之间可能存在着的差异。对表示水位恢复阶段降深变化表达式中的两个表达式都采用了相同的简化方式，即对由于持续抽水引起的降深项和停抽时刻开始的虚拟注水引起的降深项，均采用了保留Theis井函数的级数表达式中前三项作为其简化式，简化条件为无量纲时间U1〈0．2和U2〈0．2。在这样的简化条件下，建立了具有同时能够确定含水层导水系数、贮水系数和释水系数的方法。根据贮水系数和释水系数是否相等，可以判断含水层水位下降与水位恢复过程的形变是否可逆。最后，通过算例说明了方法的应用步骤。

英文摘要：

A new method for determining hydrogeological parameters of aquifer from recovery data is proposed. The possible difference between releasing water coefficient of aquifer in the stage of water level declining and water storage coefficient as water level rising is taken into consideration. In order to derive the equations for estimating the hydrogeological parameters of aquifer, the same simplification way for two well functions describing two drawdowns is taken; one of these drawdowns is caused by continuous pumping, and the other is caused by imagined recharge with the same pumping rate after pumping stops. This means that the first three terms in the series expressions of the Theis＇ well functions are taken as simplified expresses of well function, and the simplified condition is that two dimensionless times are u1 〈 0.2 andu2 〈 0.2. Under such simplifications, transmissivity, water storage and releasing water coefficients may be estimated simultaneously. According to the differences between storativity and releasing coefficient, the deformation reversibility of tested aquifer between discharge stage and recharge stage may be judged. Finally, an example is given to show the application procedure of the proposed method.