基于MODFLOW的北海涠洲岛的地下水数值模拟

Groudwater numerical simulation of Weizhou Island in Beihai based on MODFLOW

基于北海涠州岛水文地质条件进行分析的基础上,依据2003年的资料用Visual Modflow进行参数率定,确定水文地质参数,建立了地下咸淡水三维非稳定流模型,再用2003-2007年的资料验证了模型的可靠性,利用此模型进行地下水集中开采的数值模拟,敲定开采方案。结果表明:分析方法结果合理,具有较高的预测精度和潜在的实用价值,且未发生海水入侵。

A three dimensional salt and fresh groundwater flow model is built based on the analysis of hydrogeological conditions of Weizhou Island in Beihai.All the parameters are determined in Visual Modflow by the model using 2003’s data.The reliability of the model is tested by 2003-2007’s data.The model is then used for the numerical simulation of centralized groundwater exploitation and the exploitation program is finalized.The results show that the analysis method used in the simulation is reasonable.The simulation result has a high forecasting accuracy and potential practical values,and no not seawater intrusion dccurs.