【摘要】：氟含量高是滄州深層地下水水化學(xué)特征之一。為了反映滄州地區(qū)地下水資源量和揭示深層地下水氟的演變機(jī)制,本文分析了1980年和2014年滄州地區(qū)深層地下水中氟含量變化,對(duì)滄州深層地下水中氟的分布規(guī)律和演化模擬過(guò)程進(jìn)行了研究。使用ArcGIS軟件描繪滄州地區(qū)深層地下水氟的平面分布規(guī)律。結(jié)果表明滄州地區(qū)深層地下水氟濃度平面分布表現(xiàn)為西部最低,中西部和東部沿海次之,中部最高,且在2014年,其面積增至約占滄州地區(qū)總面積的50%�？芍苯语嬘玫牡叵滤Y源面積減少。運(yùn)用PHREEQC軟件和MODFLOW軟件分別建立滄州地區(qū)深層地下水水平方向水文地球化學(xué)模型和垂直方向的溶質(zhì)運(yùn)移模型。根據(jù)滄州地區(qū)深層地下水中氟的分布規(guī)律選取具有在同一水流路徑上沿水流方向具有上下游關(guān)系的兩個(gè)采樣點(diǎn),用1980年和2014年相應(yīng)采樣點(diǎn)的采樣數(shù)據(jù)模擬出滄州地區(qū)深層地下水高氟水水平方向的來(lái)源為螢石沿水流路徑水流方向不斷發(fā)生溶解反應(yīng)。用滄州地區(qū)深層地下水溶質(zhì)運(yùn)移模型模擬出滄州地區(qū)第Ⅲ含水層高氟水來(lái)源于更高濃度的第Ⅳ含水層氟的垂向運(yùn)移。根據(jù)1980年和2014年第Ⅲ含水層氟離子的濃度對(duì)氟離子溶質(zhì)運(yùn)移模型進(jìn)行率定,用率定好的滄州地區(qū)深層地下水溶質(zhì)運(yùn)移模型預(yù)測(cè)出2030年滄州地區(qū)第Ⅲ含水層氟離子平均濃度為1.64mg/L。預(yù)計(jì)在深層地下水開(kāi)采活動(dòng)下,滄州深層地下水氟含量會(huì)繼續(xù)增加,滄州地區(qū)居民長(zhǎng)期飲用會(huì)對(duì)身體健康造成影響。
[Abstract]:High fluorine content is one of the hydrochemical characteristics of deep groundwater in Cangzhou. In order to reflect the quantity of groundwater resources in Cangzhou area and reveal the mechanism of fluorine evolution in deep groundwater, this paper analyzes the variation of fluoride content in deep groundwater in Cangzhou area in 1980 and 2014. The distribution law and evolution simulation process of fluorine in deep groundwater of Cangzhou were studied. ArcGIS software was used to describe the plane distribution of fluorine in deep groundwater in Cangzhou area. The results show that the horizontal distribution of fluoride concentration in deep groundwater in Cangzhou area is the lowest in the west, followed by the central and central coastal areas, and increased to 50 percent of the total area in Cangzhou in 2014. The area of direct drinking groundwater resources is reduced. The horizontal hydrogeochemical model and solute transport model of deep groundwater in Cangzhou area were established by using PHREEQC software and MODFLOW software respectively. According to the distribution law of fluorine in deep groundwater in Cangzhou area, two sampling points with upstream and downstream relationship along the same flow path are selected. Based on the sampling data from 1980 and 2014, it is simulated that the source of the horizontal direction of the high fluorine water in the deep groundwater in Cangzhou area is the dissolving reaction of fluorite along the flow direction. By using the solute transport model of deep groundwater in Cangzhou area, the vertical migration of fluorine from the higher concentration of fluorine in the third aquifer in Cangzhou area was simulated. According to the concentration of fluorine ions in the third aquifer in 1980 and 2014, the fluorine solute transport model was used to predict the average concentration of fluorine ion in the third aquifer of Cangzhou area in 2030. The model of solute transport in the deep groundwater of Cangzhou area was used to predict the average concentration of fluorine ion in the third aquifer in Cangzhou area by 2030. It is expected that the fluorine content in the deep groundwater of Cangzhou will continue to increase under the condition of deep groundwater exploitation, and the long-term drinking of the residents in Cangzhou will have an impact on their health.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：P641.3

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本文編號(hào)：2222801