基于模拟-优化模型的山东羊庄盆地地下水可开采量研究

为了准确量化与优化地下水水源地开采量,在分析山东羊庄盆地水资源分布特点、开发利用现状及存在问题的基础上,以区域经济发展和水资源可持续利用为前提,通过地质、水文地质资料的整理分析,建立起整个盆地地下水流概念模型;采用Visual Modflow模拟软件,并与优化模型软件Ground-Water Management Process(GWM)相耦合,以水源地开采量最大为目标,以水位不低于限定的控制水位为约束条件,评价出盆地最大可开采量为5 730万m^3/a;进而确定出宋屯、后石湾、南庄、魏庄、西石楼、许坡、龙山头、羊庄、东于、段庄以及王杭水源地的优化开采量分别为0.18万、1.40万、2.56万、1.86万、3.80万、1.70万、0.40万、0.40万、0.50万、1.40万和1.50万m^3/d。

Study on Exploitable Groundwater Resources of Yangzhuang Basin in Shandong Province by Using Simulation-Optimization Model

To quantify and optimize the maximum exploitation potential of groundwater, based on the analysis of the distribution characteristics, exploitation and existing problems of groundwater resources in Yangzhuang basin, on account of regional economic development and sustainable utility of water resources, through sorting and analyzing geological and hydrogeological materials, a conceptual model of groundwater flow system in the whole basin is established coupled with universal optimization software Ground-water Management Process (GWM) and assisted by the simulation software of Visual Modflow. Based on the target of maximum exploitation quantity and the constraint conditions that the groundwater level should not be lower than the controlled groundwater level, the evaluation shows that the maximum exploitation volume of the basin is 57,300,000 m³/a. Accordingly, the optimal exploitation quantities of Songtun, Houshiwan, Nanzhuang, Weizhuang, Xishilou, Xupo, Longshantou, Yangzhuang, Dongyu, Duanzhuang and Wanghang are 0.18×10⁴, 1.40×10⁴, 2.56×10⁴, 1.86×10⁴,3.80×10⁴, 1.70×10⁴, 0.40×10⁴, 0.40×10⁴, 0.50×10⁴, 1.40×10⁴ and 1.5×10⁴ m³/d, respectively.