利用地下水长观资料求解含水层参数

Deriving Aquifer Parameters Based on Long-term Groundwater Observations

以银川平原灌区内的地下水动态观测资料,气象资料和灌溉试验资料为基础,分析了灌区内地下水的时空分布规律,并定量地确定了含水层参数:给水度度μ、潜水临界埋深△0、潜水蒸发系数C,采用此方法还可以推求降雨入渗补给系数a和灌溉回归系数等参数。

Based on groundwater monitoring, meteorological information and irrigation experimental data in the irrigation districts of the Yinchuan plain, this paper analyzed temporal and spatial distribution of groundwater in the irrigation districts, and calculated aquifer parameters including specific yield （μ）, threshold water table depth （△0） and groundwater evaporation coefficient （C）. The method used in the paper can also be used for deriving other parameters such as the rainfall recharge coefficient （a） and irrigation return flow factor.