通过将溪流银行地下水数据纳入河流质量负荷研究中,区分天然和采矿相关的金属来源
Andrew H Manning1, Robert L Runkel2, Jean M Morrison1
1U.S. Geological Survey, Geology, Geophysics, and Geochemistry Science Center, Denver, CO, USA.
Journal of contaminant hydrology
|January 15, 2026
概括
区分与矿山相关的金属负载与自然来源是有效修复的关键. 这项研究表明,多伊尔矿山的废物堆是东曼科斯河金属装载的一个小贡献者.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 水文学的水文学
背景情况:
- 区分来自矿山的金属装载与自然来源对于遗留矿场整治至关重要.
- 高度的流金属度可能来自矿山废物或天然酸性岩石排水.
研究的目的:
- 为了区分来自多伊尔矿山废物堆中的金属装载贡献与东曼科斯河 (East Mancos River) 的自然来源.
- 评估金属负载贡献的空间尺度 (100-m),使用流量追踪器注入和地下水数据.
主要方法:
- 流量追踪器注入和综合采样.
- 分析浅浅的近溪地下水井数据.
- 估计来自左岸和右岸来源的金属负载贡献.
主要成果:
- 在多伊尔矿区受影响的部分,15%的扩散地下水金属载荷来自右岸.
- 这一右岸的贡献仅占流域金属负载总量的3%.
- 地下水的年龄 (9-12年) 表明通过废物堆的透不太可能.
结论:
- 在低流量条件下,多伊尔矿山的废弃物堆是金属负载的小来源.
- 溪流银行地下水数据对于溪流质量负载研究非常有价值.
- 有效的补救决定需要准确的来源识别.
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