Grey model for karst spring discharge based on propagation process of groundwater pressure wave

Based on the characteristics of movement of karst groundwater,this paper provides a concept model of the rise and propagation of karst groundwater pressure wave.By using the grey system theory,we propose a karst hydrological model including calculation of hydraulic response time between spring discharge and precipitation,and a response model of spring discharge to precipitation.Moreover,we selecte the Liulin Springs Basin as a research object,and calculate the hydraulic response time of Liulin S...