以灰朦胧集和朦胧型灰元为基础,分析了地下水流系统的灰性,定义了含水层的灰朦胧渗透系数和灰朦胧贮水系数;构建了地下水流系统的灰朦胧微分方程,说明了灰朦胧建模思想的客观性和合理性.这对开拓地下水模拟的思路,促进地下水模拟理论与方法的进展,具有重要意义. Based on the gray-hazy set and the obscure gray-scale element, the grayness of the groundwater flow system is analyzed, and the gray-hazy permeability coefficient and the hazy water-storage coefficient of the aquifer are defined. The gray-haze differential equation of the groundwater flow system is established, The objectivity and rationality of the obscure modeling thought.This is of great significance to open up the idea of ​​groundwater simulation and promote the progress of groundwater simulation theory and method.