使用地面和水中拖动的电磁学绘制高TDS地下水在水库附近的地图
Piyoosh Jaysaval, Jonathan N Thomle1, Esteban J Bowles-Martinez1
1Pacific Northwest National Laboratory, Earth and Environmental Systems Division, Subsurface Science Group, 902 Battelle Boulevard, Richland, WA, 99352.
Ground water
|December 30, 2025
概括
拖拉式时域电磁 (TEM) 调查提供了一种非侵入性的方法来评估工业废物场所附近的地下水质量. 这种地质物理方法通过检测电导率异常,有效地绘制出潜在的漂水.
科学领域:
- 环境地质物理学 环境地质物理学
- 水文地质学 水文地质学
- 地质物理测量 测量地质物理测量
背景情况:
- 长期监测含有煤炭燃烧产品 (CCP) 或工业废物的垃圾填埋场和堆积物对于检测液释放至关重要.
- 来自此类地点的地下水污染羽毛往往呈现出较高的总溶解固体 (TDS),导致电导率增加.
- 电磁 (EM) 方法适用于检测和监测这些高TDS,因为它们对电导率变化的灵敏度很高.
研究的目的:
- 评估拖时间域电磁 (TEM) 调查的有效性,以进行近废弃物填埋场的地下水质量的非侵入性和快速评估.
- 调查TEM调查在划定地质结构和识别具有高TDS的潜在浸出物羽毛方面的能力.
- 证明综合地面和水上TEM调查的应用,以描述可能泄露水的地点.
主要方法:
- 在与河流相邻的煤炭燃烧产品 (CCP) 综合体上进行了综合的地面和水中时间域电磁 (TEM) 调查.
- 采集了超过20公里长的TEM数据,采用了由车辆和船只拖的先进天线.
- 利用侧面受约束的2D和空间受约束的3D反转来处理用于地下成像的获得的TEM数据.
主要成果:
- 成功收集了高质量的TEM数据,尽管现场条件具有挑战性,包括工业基础设施和电力线路.
- 划出了地质边界,并确定了与TDS升高一致的导电异常,表明了潜在的浸出物羽毛.
- 从TEM数据的地质学解释显示,与现有的水质数据从监测井的强烈一致.
结论:
- 拖拉式TEM调查提供了一种快速,非侵入性和有效的地质物理方法,用于评估地下水质量和绘制工业废物场所附近的污染.
- 综合的地面和水上TEM调查使得CCP水库周围的地下条件的高分辨率表征成为可能.
- 这种地质物理方法为环境监测和管理可能释放液的地点提供了有价值的工具.
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