基于数值模拟的额济纳旗地下水动态评价

发布时间：2018-03-03 10:28

本文选题：额济纳旗　切入点：地下水模拟　出处：《清华大学》2014年硕士论文　论文类型：学位论文

【摘要】：地下水已经成为黑河流域下游的内蒙古自治区阿拉善盟额济纳旗经济社会发展的限制资源。高效、安全的开发和利用地下水资源关系到区域的安全、稳定和可持续发展。区域地下水动态评价是合理开发利用地下水的基础。对黑河流域下游的地下水的整体状况，区域地质年代以及地质构造的成因，额济纳旗地区地下水的储水量多年变化情况，黑河流域下游的地下水与地表径流的转化情况，黑河流域下游额济纳旗地区地下水的变化情况对生态环境的影响等方面的内容进行了研读，最终选定了本文的研究方法和技术路线。本论文采用野外工程作业、地质勘查和室内收集整理资料的方法，建立了区域水文地质概念模型。对区域的地质构造、含水层结构、含水层水力特征和区域边界的水量交换做了定性分析。在对水文地质模型分析研究的基础上，，利用Visual MODFLOW建立了区域地下水流数值模型。在完成相关资料和数据的分析和甄别的基础上，率定了区域的地下水补给和排泄量，对区域按照精度进行了网格划分，使得分散的数据能够更好的反映整个区域的地下水状况，经过识别和验证后，得到能够反映区域地下水动态的数学模型。研究区域地下水实测资料的动态变化过程。利用建立的地下水流数值模型，对区域的地下水加载不同的开采量，得到地下水动态状况。结合在额济纳旗的供水井工程的验收资料，判断供水井工程的使用情况。建议树立科学发展观的思想，要有前瞻性的眼光和科学的视角，将地下水动态评价的成果与黑河下游额济纳旗区域的经济社会发展和水资源开发利用、生态保护等紧密结合起来，科学的平衡额济纳旗区域的地表水和地下水的开发、利用之间的关系，使本身非常珍贵和有限的水资源得到合理的开发和利用。
[Abstract]:Groundwater has become a restricted resource for the economic and social development of the Ejina Banner of the Inner Mongolia Autonomous region Alashan League in the lower reaches of the Heihe River Basin. The development and utilization of groundwater resources in an efficient and safe manner are related to the security of the region. Regional groundwater dynamic evaluation is the basis of reasonable development and utilization of groundwater. The overall situation of groundwater in the lower reaches of Heihe River Basin, the formation of regional geological age and geological structure, the variation of groundwater storage in Ejinaqi area over the years, the transformation of groundwater and surface runoff in the lower reaches of Heihe River Basin, and the transformation of groundwater and surface runoff in the lower reaches of Heihe River Basin are discussed. The effects of groundwater changes on ecological environment in Ejina Banner area of the lower reaches of Heihe River Basin are studied and the research method and technical route of this paper are finally selected. In this paper, the conceptual model of regional hydrogeology is established by using the methods of field engineering, geological exploration and indoor collection and collation of data. The water exchange between aquifer hydraulic characteristics and regional boundary is analyzed qualitatively. Based on the analysis and study of hydrogeological model, the regional groundwater flow numerical model is established by using Visual MODFLOW. Based on the analysis and discrimination of relevant data and data, the groundwater recharge and discharge are determined. The area is meshed according to the precision, so that the scattered data can better reflect the groundwater situation of the whole area. After identification and verification, a mathematical model which can reflect the regional groundwater dynamics is obtained. The dynamic change process of regional groundwater measured data is studied. Using the established numerical model of groundwater flow, different extraction rates of regional groundwater are loaded. According to the acceptance data of water supply well project in Ejina Banner, the use of supply well project is judged. It is suggested that the idea of scientific development should be set up from a forward-looking and scientific perspective, and the results of groundwater dynamic evaluation should be combined with the economic and social development and water resources development and utilization in the Ejina Banner area in the lower reaches of Heihe River. Ecological protection and other closely combined, scientific balance between the development of surface water and groundwater in Ejina Banner area, the use of the relationship between the very precious and limited water resources have been reasonable development and utilization.
【学位授予单位】：清华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：P641.2

【参考文献】