基于Visual MODFLOW的潍坊市北部地区水资源优化配置

Optimal Allocation of Water Resource in North of Weifang Based on Visual MODFLOW

鉴于潍坊市北部地区地下水超采严重,在利用地下水井成井资料分析潍坊市北部地区水文地质条件的基础上,运用地下水数值模拟方法、指标定额法对潍坊市北部地区不同规划水平年的供需水量进行分析预测,进而拟定三种水资源配置方案,对比分析了不同方案下的地下水超采量。结果表明,研究区多年平均地下水补给量为22 323×10~4 m^3,排泄量为27 635×10~4 m^3,地下水系统处于负均衡状态,均衡量为-5 312×10~4 m^3;水资源配置方案Ⅲ在满足水资源供需平衡的同时,地下水超采量由现状年的5 618×10~4 m^3减少到2020、2030年的0m^3,为最佳配置方案。

Due to the overexploitation of groundwater in north of Weifang, based on the analysis of hydrogeological conditions with the data of groundwater well, roundwater numerical simulation method and the quota method were used to forecast the water supply and demand in different planning levels. Then three kinds of water resources allocation scheme were formulated, and the corresponding groundwater overexploitations were analyzed. The results show that the average groundwater recharge in the study area for many years is 223.23 million m3, and water discharge is 276.35 million m3; groundwater system is in the negative balance state, and the equilibrium quantity is -53.12 million m3; scheme Ⅲ is the best allocation scheme, and it meets water supply and demand balance while the groundwater overexploitation decreases by the 56.18 million m3 in current year to 0 million m3 in 2020 and 2030.