采动影响下矿区地下水主要水-岩作用与水化学演化规律

发布时间：2018-05-28 03:22

本文选题：煤矿区 + 水-岩作用　；参考：《水文地质工程地质》2017年05期

【摘要】：煤矿开采势必破坏天然水化学环境,然而矿区多类含水层地下水系统水化学研究尚未从时空角度分析采动影响下水化学演化的本质。以临涣矿区为研究示范,基于历年常规水化学数据开展主成分分析,揭示采动影响下水化学演化过程中的水-岩作用机制。其中,第1主成分代表碳酸盐、硫酸盐溶解及黄铁矿氧化作用,第2主成分代表阳离子交替吸附及脱硫酸作用。采动影响下矿区主要突水含水层地下水碳酸盐、硫酸盐溶解及黄铁矿氧化作用均逐渐减弱,减弱区域不尽相同;然而,阳离子交替吸附及脱硫酸作用的变化规律不明显。研究成果为矿井突水水源识别和水资源保护与利用提供理论依据。
[Abstract]:Coal mining is bound to destroy the chemical environment of natural water. However, the hydrochemistry of groundwater system of many kinds of aquifers in mining area has not been analyzed from the point of view of time and space. Based on the conventional hydrochemical data over the years, principal component analysis (PCA) was carried out in Linhuan mining area to reveal the mechanism of water-rock interaction in the process of hydrochemical evolution affected by mining. Among them, the first principal component represents carbonate, sulfate dissolution and pyrite oxidation, and the second principal component represents cation alternating adsorption and desulfurization. Under the influence of mining, the carbonate of groundwater in main water-inrush aquifer of mining area, sulfate dissolution and pyrite oxidation are gradually weakened, and the weakening regions are different, however, the change law of cationic alternating adsorption and desulphuric acid is not obvious. The research results provide theoretical basis for mine water inrush source identification and water resources protection and utilization.
【作者单位】：合肥工业大学资源与环境工程学院;
【基金】：国家自然科学基金项目(41372244、41773100) 中央高校基本科研业务费专项资金项目(JZ2016HGBZ0802)
【分类号】：P641.461

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