江苏丰县县城规划区深层孔隙水开采动态及水位预测

简要论述丰县县城的水文地质条件；对丰县县城规划区主要供水源深层孔隙水的开采作了动态分析；建立了地下水位灰色预测模型并预测了２０００年的水位及水位变化区间。

Dynamic Status and Water Table Prediction of Deep Pore Water in Fengxian Planned Urban Area,Jiangsu

The paper briefly expresses the hydrogeological conditions of planned urban area in Fengxian,established Grey model of underground water table and predict the water table and its variation range in the year 2000 based on the dynamic analysis of deep pore water in the main water source.The table of deep pore water in the planned urban area in Fengxian decreases steadily with the increasing of mining amount.It is predicted that the average buried depth of deep pore water table will reach 54 89m in the year 2000,which is 13 04m lower than that in 1995 with lowering rate of 2 61 m/a.The occurrence possibility of the buried depth between 50 60 m for the pore water table will be 75 43%.Combined with 20 97 m water difference between dynamic and static water table,the buried depth of dynamic water table will exceed 60 m which has been over the designing level of the general layout planning of the cith.In order to prevent deterioration of water quality and land subsidence,it is the urgent task for the city to control underground water table,lower mining amount and regulanr mining arrangement.