Modflow在平原区深层地下水资源评价中的应用

在建立长时间序列地下水数值模型时,根据数据精度建立前后连贯的不同模型,前后模型的模拟期可重复,不但可提高模拟效果,又可缩短模型运行时间。采用试估—校正法进行识别和检验地下水数值模型时,水文地质参数、地下水流场、地下水均衡变化和地下水水位动态变化的拟合情况要符合研究区实际的水文地质条件。用地下水数值模型评价深层地下水资源时,需考虑研究区不同区域深层地下水不同开发利用程度,开发利用程度低的区域要考虑可动用的深层地下水释水量。

Application of Modflow in Evaluation of Deep Groundwater Resources in Plain Area

When establishing long time series numerical model of groundwater, coherent different models has been set up based on data accuracy. The simulation period before and after the model can be repeatable. It can not only improve the model simulation result, but also shorten the model running time. By using the estimated correction method to dentify and test the numerical model of groundwater, fitting situation of hydrogeological parameters, groundwater flow fields, groundwater balance changes and groundwater level changes should conform to actual hydrogeological conditions in the study area. When evaluating deep groundwater resources by using numerical model of groundwater, different exploitation and utilization degree of deep groundwater in different areas in the study area should be considered. In the areas with low exploitation and utilization of groundwater, the available released water of deep groundwater should be considered.