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首页> 外文期刊>Water, Air, and Soil Pollution >WATER AND SOLUTE BALANCES IN RECULTIVATED LIGNITE MINING DUMP SOILS-FIELD DATA AND LYSIMETER EXPERIMENTS
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WATER AND SOLUTE BALANCES IN RECULTIVATED LIGNITE MINING DUMP SOILS-FIELD DATA AND LYSIMETER EXPERIMENTS

机译：再生褐铁矿自卸土地土壤水和溶质平衡数据及溶石实验

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摘要

Specific problems of water and solute balancing in the central German post-lignite-mining district are caused by the almost unknown interactions between surface water, seepage and ground-water in the unsaturated zone of mining dumps. This paper presents the findings of studies using lysimeter and seepage groundwater measuring systems designed to investigate the water balance and the migration of inorganic components in the vadose zone of recultivated dumps. Despite the heterogeneous tertiary layers of the three lysimeter monoliths studied, the quantity of seepage occurring at a depth of 3 m as well as the evapotranspiration and the soil water regime were almost the same in the 4 years of the investigation. The high variability of the ion balances in seepage reflects inhomogeneities in tertiary dump material and can be explained by substrate properties interacting with the soil's pH. Very high seepage conductivities are caused by coal containing high levels of pyrite with a low pH and high acid potential. These conductivities are caused by comparatively high concentrations of ions of sulphate, iron, aluminium, calcium, magnesium and heavy metals. The results confirm the impact of ventilated and pyrite-containing dump substrates for groundwater quality.
机译：德国中部褐煤开采后中部地区水和溶质平衡的特殊问题是由矿山非饱和区中的地表水，渗流和地下水之间几乎未知的相互作用引起的。本文介绍了使用溶渗仪和渗漏地下水测量系统进行研究的结果，这些系统旨在调查翻耕后的垃圾渗流区的水平衡和无机成分的迁移。尽管研究的三个测渗仪整体结构的第三层是不均匀的，但在研究的4年中，在3 m深度发生的渗漏量以及蒸散量和土壤水分状况几乎相同。渗流中离子平衡的高变异性反映了三级堆放物料中的不均匀性，这可以用与土壤pH值相互作用的基质性质来解释。渗碳电导率非常高是由于煤中含有高含量的黄铁矿，低pH值和高酸势。这些电导率是由较高浓度的硫酸根，铁，铝，钙，镁和重金属离子引起的。结果证实通风和含黄铁矿的排污底物对地下水质量的影响。

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