【作者】 刘文婷；

【导师】 朝伦巴根；

【作者基本信息】 内蒙古农业大学 ， 水文学及水资源， 2010， 硕士

【摘要】 研究区位于内蒙古阿拉善盟左旗巴彦浩特镇西北48公里的紫泥湖盆地,称为新井水源地,为巴彦浩特镇提供民用水资源,研究区为典型的中温带干旱区,降水量少,蒸发量大。本文在详细分析研究区地质和水文地质条件的基础上,通过水文地质参数、含水层信息,将三维地质模型进一步概化,建立水文地质模型。本文分别通过基于有限元方法的FEFLOW以及基于有限差方法的MODFLOW对研究区地下水系统进行数值模拟评价,并分析了两者在模拟地下水流问题时的相同与异同之处,还对该地区地下水资源可利用状况进行预测,最后为研究区提供未来20年的地下水开采方案。研究区在垂向上划分为潜水含水层、弱透水层、承压含水层三个层次。其中潜水、承压含水层为主要开采层。文章通过两种方法进行了模型识别、水文地质参数辨识及流场拟合。两种方法得到的结果基本相近。最后,利用经过识别验证的数学模型,预测未来20年地下水位降深及变化,对研究区提出开采建议并评价其地下水资源量。数值模拟区域的水资源量为35420m3/d,水源地的水资源量为17980 m3/d。数值模拟区域的合理开采量为2.16万m3/d,建议水源地合理开采量取值范围为1.5-2.0万m3/d。更多还原

【Abstract】 The study area is located northwest of Alashan Left league of Bayan town 48 km of the purple clay lake basin, It`s named New well water supply point ,that supply water resource for Bayan town. In the study area is a typical temperate arid, lack of rain and more of evaporation. In this thesis, based on detailed analysis of research area geology and hydrogeology conditions, and on the basis of hydrogeology parameters, aquifers informations, I created a 3D geological model and establish the hydrogeological generalized model. This paper based on the finite element method and finite difference method FEFLOW and MODFLOW of groundwater system of numerical simulation are analyzed, and analysised similarities and differences between the model in underground flow problems. And predict the utilization of groundwater resources, and put forward available groundwater program for the study area over the next 20 years at last.Research area in the vertical division for unconfined aquifer, aquiclude,and the confined aquifer three levels. The unconfined aquifer and confined aquifer as the main mining layer. Based on the model of two methods identifying model , identifying hydrogeology parameters and flow fitting. These two methods get results similarly. Finally, using the mathematical model is verified through the recognition and predicts future 20 years of underground water drop deep and the change of study area, put forward the suggestion for groundwater exploitation and evaluation of resources.water resources of Numerical simulation regional is 35420m3/d, water resources of water supply point is 17980 m3/d. Reasonable exploitation of Numerical simulation regional is 2.16万m3/d,suggested reasonable exploitation of water supply point is 1.5-2.0万m3/d.更多还原