贵阳地区岩溶地下水资源现状及开发利用风险评价

发布时间：2018-03-12 06:48

本文选题：风险评价　切入点：开采系数法　出处：《贵州大学》2015年硕士论文　论文类型：学位论文

【摘要】：自2013年参加贵阳市水利局项目《贵阳市地下水资源普查》至今已历时2年,本论文是在该项目成果基础上完成的,主要取得以下成果:(1)确定研究区地下水资源按流域和行政分区。(2)采用开采系数法得出研究区地下水允许开采量为5.1592亿m3/a,地下水开发利用总量为1.2237亿m3/a,开发利用率为23.72%,地下水开采潜力评价结果表明,研究区开发利用潜力较小。(3)针对研究区地下水资源开发利用风险目标层,建立了地下水资源自然状况、开发利用状况、社会经济发展状况3个指标群,选取水文地质特征、资源量特征、开采状况、水质状况、机井工程5个目标层,涵盖12个评价指标,使评价结果具有代表性。(4)突变理论模型计算得出研究区地下水系统内10个行政区的地下水开发综合风险值在0.77~0.91,根据风险划分等级,均属于中度~重度风险区,其中清镇市和息烽县开发风险大,并在此基础上提出了研究区地下水开发利用及保护的建议。(5)突变评价模型对各指标的确定和量化,是根据各指标在归一公式本身中的内在作用机理进行的,并且可以通过逐级计算最终得出目标层的风险值,相对其他方法减小了主观性,使决策和评价更趋于实际,为研究区制定合理有效的岩溶地下水开发利用模式及管理决策提供参考。
[Abstract]:It has been 2 years since 2013 to participate in Guiyang Water Resources Bureau Project "Guiyang groundwater Resources Survey". This paper is based on the achievements of the project. The main results are as follows: 1) determine groundwater resources in the study area according to watershed and administrative zonation. (2) using the method of exploitation coefficient, the allowable exploitation of groundwater in the study area is 515.92 million m3 / a, the total amount of groundwater exploitation and utilization is 122.37 million m3 / a, and the utilization ratio of groundwater is 122.37 million m3 / a. For 23.72, the evaluation results of groundwater exploitation potential show that, In view of the risk target layer of groundwater resources development and utilization in the study area, three index groups, namely, the natural status of groundwater resources, the development and utilization of groundwater resources and the development of social economy, are established, and the hydrogeological characteristics are selected. The characteristics of resource quantity, exploitation condition, water quality condition, well engineering 5 target layers, covering 12 evaluation indexes, So that the evaluation result is representative. The catastrophe theory model calculates that the comprehensive risk value of groundwater exploitation in 10 administrative regions of the study area is 0.77 ~ 0.91. According to the grade of risk, all of them belong to moderate to severe risk area. The risk of development in Qingzhen City and Xifeng County is great. On this basis, the suggestion of groundwater exploitation, utilization and protection in the study area is put forward. The catastrophe evaluation model determines and quantifies each index. It is based on the internal action mechanism of each index in the normalization formula itself, and the risk value of the target layer can be finally obtained by calculating step by step. Compared with other methods, it reduces subjectivity and makes decision-making and evaluation more practical. It provides a reference for making reasonable and effective development and utilization model and management decision of karst groundwater in the study area.
【学位授予单位】：贵州大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P641.8

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