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首页> 外文会议>Symposium on the Application Of Geophysics To Engineering And Environmental Problems >USE OF ELECTROMAGNETIC INDUCTION METHODS TO MONITOR REMEDIATION AT THE UNIVERSITY OF CONNECTICUT LANDFILL: 2004-2011
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USE OF ELECTROMAGNETIC INDUCTION METHODS TO MONITOR REMEDIATION AT THE UNIVERSITY OF CONNECTICUT LANDFILL: 2004-2011

机译：使用电磁感应方法在康涅狄格大学垃圾填埋场监测修复：2004-2011

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Time-lapse geophysical surveys using frequency-domain electromagnetics (FDEM) can indirectly measure time-varying hydrologic parameters such as fluid saturation or solute concentration. Monitoring of these processes provides insight into aquifer properties and the effectiveness of constructed controls (such as leachate interceptor trenches), as well as aquifer responses to natural or induced stresses. At the University of Connecticut landfill, noninvasive, electromagnetic induction (EMI) methods were used to monitor changes in subsurface electrical conductivity that were related to the landfill-closure activities. After the landfill was closed, EMI methods were used to monitor changes in water saturation and water quality. As part of a long-term monitoring plan to observe changes associated with closure, redevelopment, and remediation of the former landfill, EMI data were collected to supplement information from groundwater samples collected in wells to the south and north of the landfill. In comparison to single-point measurements that could have been collected by conventional installation of additional monitoring wells, the EMI methods provided increased spatial coverage, and were less invasive and therefore less destructive to the wetland north of the landfill. To monitor effects of closure activities on the subsurface conductivity, EMI measurements were collected from 2004 to 2011 along discrete transects north and south of the landfill prior to, during, and after the landfill closure. In general, the results indicated an overall decline in Subsurface electrical conductivity with time and with distance from the former landfill. This decline in electrical Conductivity indicated that the closure and remediation efforts reduced the amount of leachate that originated from the landfill and that entered the drainages to the north and south of the landfill.
机译：使用频域电磁（FDEM）的时间流逝地球物理调查可以间接测量时变水文参数，例如流体饱和度或溶质浓度。监测这些过程提供了对含水层性质的洞察力和构建对照的有效性（例如渗滤液拦截器沟槽），以及对天然或诱导应力的含水层反应。在康涅狄格大学垃圾填埋场，非侵入性，电磁感应（EMI）方法用于监测与填埋场填埋场相关的地下电导率的变化。垃圾填埋场关闭后，EMI方法用于监测水饱和度和水质的变化。作为观察与前垃圾填埋场的关闭，重建和修复相关的改变的长期监测计划的一部分，收集了EMI数据，以补充来自垃圾填埋场南部和北部井中的地下水样本的信息。与可以通过常规安装的额外监测井的传统安装收集的单点测量相比，EMI方法提供了增加的空间覆盖率，并且对垃圾填埋场北部的湿地具有更少的侵入性，因此对湿地的破坏性较少。为了监测闭环活动对地下电导率的影响，在垃圾填埋场封闭期间，在垃圾填埋场之前，陆离散横跨垃圾填埋场的北部和南部，从2004年到2011年收集了EMI测量。一般来说，结果表明了地下电导率的总体下降随着时间的推移和与前垃圾填埋场的距离。导电性的这种下降表明，关闭和修复努力降低了源于垃圾填埋场的渗滤液，并将排水填埋场进入南北和南部。

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