The Groundwater Potential Analyasis And Water Environmental Protection Research In Water Source Area Of Futuan River

The Futuan river water source area is situated in the south of Rizhao city; it is the main water supply source of Rizhao. At present, with the rapid development of economic society and urbanization, the conflict between demand and supply of urban water resources becomes more and more crucial. The water source is in a river valley basin, aquifer is quaternary sandstone mainly, and the geological boundary condition is simple and clear. The Rizhao reservoir is regarded the constant head boundary; the south boundary is sea water and is regarded the constant head boundary. The south and east boundary is the intersection point of Daqu river and Gu river, regarded the constant head boundary. Beside these, all of others are decided as the impermeable head boundary. In the establishment of hydrogeological conception model foundation, we constructs three dimensional ground water numerical models in research area, selects the GMS software as salvation. Using distinguished and confirmed model, we calculates ground water recharges and outflow volume in forecast time interval in the research area; using the cl~- concentration migrating situation, model simulates the saltwater intrusion scope, analysis environment geological problems, groundwater resource utilization and the mining potential in the water source area. As well as the question carries on, provides the scientific foundation for reasonable mining groundwater in water source area. The result shows the water source recharge and mining are in balance. However , the over-exploiting groundwater has caused saltwater intrusion in coastal area. Saltwater intrusion has harmed the water source supply security in water source area. Finally it analysis the reason of environment geology problem caused by unreasonably mining and proposes the protective measures.