新乡市原武—包厂水源地地下水数值模拟与水资源评价
发布时间：2018-12-12 17:20
【摘要】：河南省是我国农业大省,属于粮食核心生产区的一部分,部分地区农田灌溉地下水开采量就已超过每年的补给量。新乡市是中原城市群的重要组成部分,其规划与发展离不开水资源,原武-包厂水源地是新乡市重点规划建设的水源地之一。为了科学合理的开发利用水源地地下水资源,避免出现水文地质、环境地质问题,对地下水资源进行数值模拟与评价具有十分重要的现实意义。本文以新乡市原武-包厂水源地为研究对象,采用水均衡法与数值模拟技术评价了水源地地下水资源量,对比分析了F值评分法与模糊综合评价法在水质评价结果中的一致性,取得的主要成果如下:(1)采用水均衡法对研究区地下水系统进行均衡分析,分别计算了现状年份、典型年份和多年平均条件下地下水的补给量和排泄量,以此初步评价该区地下水资源量;采用开采系数法评价该区域地下水开采潜力,结果表明该区多年平均开采量小于允许开采量,尚有一定的开采潜力。(2)通过对研究区钻孔资料、水文地质条件进行分析,合理概化含水层、侧向边界和垂向边界,建立了三维地下水流数值模拟模型,应用试估-校正法对模型进行识别与验证。利用识别后的模型对原武-包厂水源地在规划开采条件下运行10年后的流场变化以及水位降深进行预测。(3)对比分析F值评分法和模糊综合评价法在水质评价结果中的一致性,模糊综合评价法能够克服F值评分法的不足,根据各个评价因子实测浓度的超标情况赋予不同的权重值,在突出污染指标的前提下兼顾其他评价因子,更具有合理性和客观性。
[Abstract]:Henan Province is a big agricultural province in China, which belongs to a part of the grain core production area. The groundwater exploitation of irrigated farmland in some areas has exceeded the annual supply. Xinxiang is an important part of the urban agglomeration in Central China, and its planning and development can not be separated from water resources. The water source of Yuanwu-Baochang is one of the important water sources for the planning and construction of Xinxiang. In order to develop and utilize groundwater resources scientifically and rationally and avoid the problems of hydrogeology and environmental geology, it is of great practical significance to simulate and evaluate groundwater resources by numerical method. In this paper, the water source of Yuanwu-Baochang in Xinxiang city is taken as the research object, the groundwater resources quantity of water source is evaluated by using water balance method and numerical simulation technique, and the consistency of F value scoring method and fuzzy comprehensive evaluation method in water quality evaluation result is analyzed. The main results are as follows: (1) the groundwater system in the study area is analyzed by water equilibrium method, and the groundwater recharge and discharge are calculated in the current year, typical year and annual average condition, respectively. The quantity of groundwater resources in this area is evaluated preliminarily. The method of mining coefficient is used to evaluate the potential of groundwater exploitation in this area. The results show that the annual average mining capacity in this area is less than the allowable exploitation, and there is still some potential for exploitation. (2) through the analysis of the borehole data and hydrogeological conditions in the study area, Three dimensional groundwater flow numerical simulation model is established by reasonably generalizing aquifer, lateral boundary and vertical boundary, and the model is identified and verified by trial estimation and correction method. By using the identified model, the flow field changes and water level drop depth of Yuanwu-Baochang water source area after 10 years of operation under planned mining conditions are predicted. (3) the F-value scoring method and fuzzy comprehensive evaluation method are compared and analyzed in water quality assessment. Consistency in price results, The fuzzy comprehensive evaluation method can overcome the deficiency of F-value scoring method and give different weights according to the measured concentration of each evaluation factor. It is more reasonable and objective to give consideration to other evaluation factors on the premise of highlighting the pollution index.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P641.8
，
本文编号：2374986
[Abstract]:Henan Province is a big agricultural province in China, which belongs to a part of the grain core production area. The groundwater exploitation of irrigated farmland in some areas has exceeded the annual supply. Xinxiang is an important part of the urban agglomeration in Central China, and its planning and development can not be separated from water resources. The water source of Yuanwu-Baochang is one of the important water sources for the planning and construction of Xinxiang. In order to develop and utilize groundwater resources scientifically and rationally and avoid the problems of hydrogeology and environmental geology, it is of great practical significance to simulate and evaluate groundwater resources by numerical method. In this paper, the water source of Yuanwu-Baochang in Xinxiang city is taken as the research object, the groundwater resources quantity of water source is evaluated by using water balance method and numerical simulation technique, and the consistency of F value scoring method and fuzzy comprehensive evaluation method in water quality evaluation result is analyzed. The main results are as follows: (1) the groundwater system in the study area is analyzed by water equilibrium method, and the groundwater recharge and discharge are calculated in the current year, typical year and annual average condition, respectively. The quantity of groundwater resources in this area is evaluated preliminarily. The method of mining coefficient is used to evaluate the potential of groundwater exploitation in this area. The results show that the annual average mining capacity in this area is less than the allowable exploitation, and there is still some potential for exploitation. (2) through the analysis of the borehole data and hydrogeological conditions in the study area, Three dimensional groundwater flow numerical simulation model is established by reasonably generalizing aquifer, lateral boundary and vertical boundary, and the model is identified and verified by trial estimation and correction method. By using the identified model, the flow field changes and water level drop depth of Yuanwu-Baochang water source area after 10 years of operation under planned mining conditions are predicted. (3) the F-value scoring method and fuzzy comprehensive evaluation method are compared and analyzed in water quality assessment. Consistency in price results, The fuzzy comprehensive evaluation method can overcome the deficiency of F-value scoring method and give different weights according to the measured concentration of each evaluation factor. It is more reasonable and objective to give consideration to other evaluation factors on the premise of highlighting the pollution index.
【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P641.8
，
本文编号：2374986
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