Groundwater Numerical Simulation on Plain Area in Fangshan District of Beijing on GMS Model

Based on an analysis of the hydrogeological conditions on the plain area in Fangshan district of Beijing,the hydrogeological concept model is conceptualized as a 3-D heterogeneous,isotropic and unstable groundwater flow system.By using GMS(Groundwater Modeling System) software,numerical simulation of groundwater flow in this area is carried out.After identification and verification of the model,eight different scenarios are set up to analyze the changes in groundwater under the planning year,the best solution suitable for the sustainable development of groundwater in this area is found.The results show that the water table is the best by moderate water-saving,the present planting structure and intensified reduction groundwater overexploitation(scenario 5).Compared with the water table in 2005,it will raise 3.55 m and 5.86 m respectively.