本文選題：廣漢市 + 水化學(xué)演化　； 參考：《吉林大學(xué)學(xué)報(bào)(地球科學(xué)版)》2016年03期

【摘要】：為在廣漢市城鄉(xiāng)規(guī)劃過程中提供地下水資源開發(fā)利用的基礎(chǔ)信息,采用礦物風(fēng)化系統(tǒng)分析、相關(guān)性分析、主成分分析和PhreeQC反向水文地球化學(xué)模擬等方法對廣漢市平原區(qū)的淺層地下水的地下水水化學(xué)組分進(jìn)行分析,確定了淺層地下水的水化學(xué)演化及控制因素,完成了地下水資源的質(zhì)量及時(shí)空分布特征分析。分析表明:Gibbs圖顯示巖石風(fēng)化主導(dǎo)該區(qū)地下水水化學(xué)特征,風(fēng)化過程產(chǎn)生離子和次生礦物又經(jīng)歷水解作用,在礦物風(fēng)化系統(tǒng)穩(wěn)定場圖中顯示水樣中鋁硅酸鹽礦物逐漸趨于溶解,碳酸鹽礦物處于飽和狀態(tài);PhreeQC反向水文地球化學(xué)模擬結(jié)果顯示在水流模擬路徑上主要發(fā)生了鈣蒙脫石、鉀長石溶解和高嶺石、石英、鈉長石的沉淀,以及Ca-Na_2之間的陽離子交換吸附作用;離子相關(guān)性和主成分分析進(jìn)一步的驗(yàn)證了溶濾作用、蒸發(fā)濃縮作用和陽離子交換吸附作用是引起淺層地下水水化學(xué)過程和礦物組成改變的主要原因。研究區(qū)地下水水質(zhì)總體不會對人體健康造成不良影響。
[Abstract]:In order to provide basic information for the development and utilization of groundwater resources in the process of urban and rural planning in Guanghan City, the mineral weathering system analysis and correlation analysis are used. Principal component analysis (PCA) and PhreeQC inverse hydrogeochemical simulation are used to analyze the chemical composition of groundwater in shallow groundwater in Guanghan Plain area, and the hydrochemical evolution and controlling factors of shallow groundwater are determined. The quality and temporal and spatial distribution of groundwater resources are analyzed. The analysis shows that rock weathering dominates the hydrochemical characteristics of groundwater in this area, and the anion and secondary minerals are hydrolyzed during the weathering process, and the aluminosilicate minerals tend to dissolve in the water samples in the stable field diagram of the mineral weathering system. The results of reverse hydrogeochemical simulation of carbonate minerals in saturated state show that there are mainly calcium montmorillonite, potassium feldspar dissolution and precipitation of kaolinite, quartz and albite on the flow simulation path. The cation exchange and adsorption between Ca-Na_2, ion correlation and principal component analysis further verify the dissolution and filtration, Evaporation concentration and cation exchange adsorption are the main reasons for the change of hydrochemical process and mineral composition of shallow groundwater. The groundwater quality in the study area is not harmful to human health.
【作者單位】： 成都理工大學(xué)地質(zhì)災(zāi)害防治與地質(zhì)環(huán)境保護(hù)國家重點(diǎn)實(shí)驗(yàn)室;
【基金】：地質(zhì)災(zāi)害防治與地質(zhì)環(huán)境保護(hù)國家重點(diǎn)實(shí)驗(yàn)室自主研究課題(SKLGP2009Z006) 四川省科技廳科技支撐計(jì)劃項(xiàng)目(2011SZ0172)~~
【分類號】：P641.3

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