【摘要】：河南省是我國農(nóng)業(yè)大省,屬于糧食核心生產(chǎn)區(qū)的一部分,部分地區(qū)農(nóng)田灌溉地下水開采量就已超過每年的補給量。新鄉(xiāng)市是中原城市群的重要組成部分,其規(guī)劃與發(fā)展離不開水資源,原武-包廠水源地是新鄉(xiāng)市重點規(guī)劃建設(shè)的水源地之一。為了科學(xué)合理的開發(fā)利用水源地地下水資源,避免出現(xiàn)水文地質(zhì)、環(huán)境地質(zhì)問題,對地下水資源進行數(shù)值模擬與評價具有十分重要的現(xiàn)實意義。本文以新鄉(xiāng)市原武-包廠水源地為研究對象,采用水均衡法與數(shù)值模擬技術(shù)評價了水源地地下水資源量,對比分析了F值評分法與模糊綜合評價法在水質(zhì)評價結(jié)果中的一致性,取得的主要成果如下:(1)采用水均衡法對研究區(qū)地下水系統(tǒng)進行均衡分析,分別計算了現(xiàn)狀年份、典型年份和多年平均條件下地下水的補給量和排泄量,以此初步評價該區(qū)地下水資源量;采用開采系數(shù)法評價該區(qū)域地下水開采潛力,結(jié)果表明該區(qū)多年平均開采量小于允許開采量,尚有一定的開采潛力。(2)通過對研究區(qū)鉆孔資料、水文地質(zhì)條件進行分析,合理概化含水層、側(cè)向邊界和垂向邊界,建立了三維地下水流數(shù)值模擬模型,應(yīng)用試估-校正法對模型進行識別與驗證。利用識別后的模型對原武-包廠水源地在規(guī)劃開采條件下運行10年后的流場變化以及水位降深進行預(yù)測。(3)對比分析F值評分法和模糊綜合評價法在水質(zhì)評價結(jié)果中的一致性,模糊綜合評價法能夠克服F值評分法的不足,根據(jù)各個評價因子實測濃度的超標(biāo)情況賦予不同的權(quán)重值,在突出污染指標(biāo)的前提下兼顧其他評價因子,更具有合理性和客觀性。
[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.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P641.8
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本文編號：2374986