陕西黑河流域地表水与地下水耦合模拟研究

发布时间：2018-05-09 01:17

本文选题：地表水 + 地下水　；参考：《长安大学》2015年硕士论文

【摘要】：水是人类赖以生存的资源,长期以来,由于人类的不合理利用,使得水资源短缺日益严重。西北地区地貌复杂,地形起伏大,且气候干燥,植被覆盖度低,地表水与地下水的交互作用强烈。在全球变暖的趋势下研究西北地区,尤其是干旱半干旱地区地表水与地下水循环过程,对于西北地区的水资源统一规划管理具有重要的意义。周至县境内黑河流域是西安市的供水水源地,本文选黑河流域作为研究靶区,利用SWAT模型,在ARCGIS平台技术支持下,对黑河下游进行径流模拟,模型验证期月径流的相关系数R2为0.89,模型效率系数ENS为0.85。然后根据SWAT分布式模型的特点,以其最小计算单元(水文响应单元)和MODFLOW模型的最小计算元(有限差分网格)作为基本交换单元,将SWAT模型与MODFLOW模型进行耦合,将SWAT模型的高精度模拟数据作为MODFLOW模型的输入数据,并且利用2005-2013年的实测径流数据与地下水观测数据进行率定与验证,结果表明耦合模型能够较好的模拟出黑河流域的地下水资源和地表水与地下水的交互作用。为黑河流域的水资源统一规划、管理提供重要的参考意义。
[Abstract]:Water is the resource on which human beings depend for survival. For a long time, the shortage of water resources is becoming more and more serious due to the unreasonable utilization of human beings. In Northwest China, the geomorphology is complex, the topography is undulating, the climate is dry, the vegetation coverage is low, and the interaction between surface water and groundwater is strong. Under the trend of global warming, it is of great significance to study the process of surface water and groundwater circulation in Northwest China, especially in arid and semi-arid areas, for the unified planning and management of water resources in Northwest China. The Heihe River basin in Zhouzhi County is the source of water supply in Xi'an. In this paper, the Heihe River Basin is chosen as the research target area, and the runoff simulation of the lower reaches of Heihe River is carried out by using SWAT model and supported by the technology of ARCGIS platform. The correlation coefficient R2 of monthly runoff and ENS of model efficiency were 0.89 and 0.85 respectively. Then according to the characteristics of SWAT distributed model, the minimum computing unit (hydrological response unit) and the minimum computational element of MODFLOW model (finite difference mesh) are taken as the basic exchange units, and the SWAT model and MODFLOW model are coupled. The high precision simulation data of SWAT model are used as input data of MODFLOW model, and the actual runoff data and groundwater observation data from 2005 to 2013 are used to determine and verify the data. The results show that the coupling model can well simulate the interaction between groundwater resources and surface water and groundwater in Heihe River Basin. It provides an important reference for the unified planning and management of water resources in the Heihe River Basin.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.2;P339

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