基于GIS和相关性分析峰峰矿区岩溶水水化学特征
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摘要
应用Arc-GIS、离子相关性及比例系数法方法对峰峰矿区的地下水水化学特征进行研究。结果表明,峰峰矿区奥灰岩溶水pH值为7.45～7.86,偏碱性。基于Arc-GIS中DTM方法对奥灰岩溶水地下水类型进行分区,主要为HCO_3·SO_4-Ca·Mg型水,部分为HCO_3·SO_4-Ca型水。Cl~-是随环境变化的敏感因子。地下水在流动过程中发生的水—岩作用以方解石和白云石的溶解作用为主;并伴有石膏、岩盐、硫酸盐的溶解反应以及阳离子置换作用。揭示了矿区奥灰岩溶含水层径流条件整体较好,局部地区径流条件有变化,为矿区煤炭开采水害防治和地下水资源的可持续利用提供依据。
The hydrochemical characteristics of groundwater in Fengfeng mining area were studied by means of Arc-GIS, ions correlation and proportional coefficient method. The results showed that the pH value of Ordovician limestone karstic water in Fengfeng mining area was 7.45～7.86, which was alkalescent. The karstic ground water type was zoned based on DTM of Ars-GIS method, which showed that the type of groundwater was mainly HCO_3·SO_4-Ca·Mg type water, and a small part of that was HCO_3·SO_4-Ca type water. Cl~- was a sensitive factor changing with the environment. In the process of groundwater flowing, the water-rock interaction was dominated by the dissolution of calcite and dolomite, and accompanied by the dissolution of gypsum, rock salt and sulfate and the cationic replacement. It was revealed that the runoff condition of Ordovician limestone karst aquifer in the mining area was good as a whole, but the runoff condition in some areas had obviously changed, the study provided the basis for the prevention and control of coal mining water disaster and the sustainable utilization of groundwater resources in the mining area.
The hydrochemical characteristics of groundwater in Fengfeng mining area were studied by means of Arc-GIS, ions correlation and proportional coefficient method. The results showed that the pH value of Ordovician limestone karstic water in Fengfeng mining area was 7.45～7.86, which was alkalescent. The karstic ground water type was zoned based on DTM of Ars-GIS method, which showed that the type of groundwater was mainly HCO_3·SO_4-Ca·Mg type water, and a small part of that was HCO_3·SO_4-Ca type water. Cl~- was a sensitive factor changing with the environment. In the process of groundwater flowing, the water-rock interaction was dominated by the dissolution of calcite and dolomite, and accompanied by the dissolution of gypsum, rock salt and sulfate and the cationic replacement. It was revealed that the runoff condition of Ordovician limestone karst aquifer in the mining area was good as a whole, but the runoff condition in some areas had obviously changed, the study provided the basis for the prevention and control of coal mining water disaster and the sustainable utilization of groundwater resources in the mining area.
引文
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