Groundwater Numerical Simulation and Forecasting of Heilongdong Spring Area

In order to evaluate the water resources of the whole drainage area of HeiLongdong, the pape establishes groundwater seepage model of the whole spring area of HeiLongdong through the in-depth research of geological condition and the date of water level of this area based on water balance theory, groundwater seepage flow theory and Galerkin finite element theory. Moreover, with the assistance of grey series forecasting model and the rule of the annual precipitation, the annual average precipitation, groundwater flow field, groundwater level and spring flow in the future under current exploitation circumstances were forecasted. If 2010 is a high flow year (guarantee ratio 20%), or median flow year (guarantee ratio 50%), or even low flow year (guarantee ratio 75%), the underground water level of HeiLongdong spring in flood season will exceed 130m, or reach 130m, or even below 130m, and the spring flow in flood season will exceed 10m³ /s, 7m³/s, 5m³/s respectively. The result of prediction is of great significance to management and exploitation of water resources in HeiLongdong spring area.