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首页> 外文会议>Eighth International Conference on Tailings and Mine Waste '01, Jan 16-19, 2001, Fort Collins, Colorado, USA >The use of natural stable isotopes of water to delineate pond leakage in a semiarid environment
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The use of natural stable isotopes of water to delineate pond leakage in a semiarid environment

机译：在半干旱环境中利用水的自然稳定同位素描述池塘渗漏

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In semiarid and arid environments, isotopically light water molecules are preferentially vaporized, enriching remaining water with heavier isotopes of hydrogen and oxygen. Water composition of tailings ponds in this climate have an elevated concentration of these isotopes, which are sufficiently distinct from ground water to be used as a tracer. Delineation of pond leakage utilizing the heavier water isotopes is useful to define plume extents and magnitude. In a fifteen-year case study, the use of stable isotopes of hydrogen and oxygen was preferable to water quality monitoring for accurately mapping pond water migration. Natural ground water composition at this location was indistinguishable from tailings pond salts. This was the result of dissolution of similar natural salts as ground water elevations rise and buffering reactions of the tailings pond brines with natural minerals in the surrounding rocks. These compounding factors obscured the delineation of tailings pond leakage. In semiarid and arid environments, the use of natural heavier isotopes of hydrogen and oxygen in water complements the use of monitoring ground water quality and provides better definition for mapping pond leakage.
机译：在半干旱和干旱的环境中，同位素轻质水分子会优先蒸发，从而使剩余的水富含更重的氢和氧同位素。在这种气候下，尾矿池的水成分具有较高的这些同位素浓度，这些同位素与地下水足够不同，可以用作示踪剂。利用较重的水同位素描述池塘渗漏有助于定义羽流范围和大小。在十五年的案例研究中，使用氢和氧的稳定同位素优于水质监测以准确绘制池塘水迁移图。在该位置的天然地下水成分与尾矿池的盐没有区别。这是由于随着地下水位升高，相似的天然盐溶解，并且尾矿池盐水与周围岩石中的天然矿物发生缓冲反应的结果。这些复合因素掩盖了尾矿池泄漏的轮廓。在半干旱和干旱的环境中，水中氢和氧的天然较重同位素的使用补充了监测地下水水质的使用，并为绘制池塘渗漏提供了更好的定义。

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