The study of quantitative relationship between the spring water and the dynamic change of the atmospheric precipitation in Ji'nan
The protection of Ji'nan spring has history more than 40 years, and the spring during dry season over the years has been threatened by cutoff.According to current situation of dynamic change, this paper studies by the correlation analysis method that the relationship between precipitation and spring water in different time scales.Research shows that: The main recharge sources of karst groundwater in Ji'nan spring is precipitation, and the water level of the spring is mainly affected by rainfall.The influence of precipitation on the water level of the spring has the characteristic of hysteresis.The regression analysis of the cumulative precipitation in different time scales shows that the lag time of the Xinglong rainfall station and the Yanzishan rainfall station affect on the water level of the spring is short.Under the condition of the current exploitation, it has a positive effect on the recovery of spring water level when the cumulative value of natural precipitation is more than 17.58mm.The study that the flow direction of the karst water in the spring of Ji'nan, the distance between the spring and each rainfall station, the lag time of the rainfall affect on the spring water level, the relationship between the precipitation and the change of water level of the springs shows that, it is in the region of the Xinglong rainfall station that the influence of precipitation on the water level of the spring is great.Therefore, the Xinglong rainfall station is a suitable recharge place for spring protection and can achieve the purpose of scientific compensation for spring protection.
hoizumiatmospheric precipitationrange of water levelsurface rainfallJinan
NETL
NSTL
万方数据
维普
