土工基础

土工基础 ›› 2021, Vol. 35 ›› Issue (6): 764-767.

• 测试技术 • 上一篇    下一篇

瞬变电磁法在城市地质环境调查中的应用

张召彬1，张 朋1，齐松松1，张开伟1,2，刘 朋1，牛 禾1   

  1. （1.河北双诚建筑工程检测有限公司，石家庄 051130；2.河北建设勘察研究院有限公司，石家庄 050031）
  • 收稿日期:2020-06-27 修回日期:2020-07-01 出版日期:2021-12-30 发布日期:2021-12-24
  • 作者简介:张召彬（1989-），男，工程师，研究方向为电磁法解释、工程物探与工程检测等。

The Application of TEM in Urban Geological and Environment Survey

ZHANG Zhaobin1, ZHANG Peng1, QI Songsong1, ZHANG Kaiwei1，2, LIU Peng1， NIU He1   

  1. (1.Hebei Shuangcheng Construction Engineering Testing Co. Ltd., Shijiazhuang 051130；
    2.China Hebei Construction & Geotechnical Investigation Group Co. Ltd., Shijiazhuang 050031)
  • Received:2020-06-27 Revised:2020-07-01 Online:2021-12-30 Published:2021-12-24

摘要： 结合理论模型与实际案例分析了瞬变电磁的拟大地电磁解释方法在城市地质调查中可以正确的圈定异常。在岩溶调查中上部覆盖层多为低阻层电性结构，溶蚀带为电阻率梯度带，充填物质的溶穴表现为低阻体异常。垃圾填埋场的电性结构表现为垃圾场低阻区被周围高阻防渗区包围，无低阻梯度带通道，该垃圾填埋场防渗效果良好。


关键词: 瞬变电磁, 城市地质环境调查, 拟大地电磁, 岩溶, 垃圾污染源

Abstract: Combined with the theoretical model and actual case analysis of the pseudo magnetotelluric interpretation by using transient electromagnetic method, the anomalies in the urban geological survey could be identified. In the karst rock cavity investigation, the cover soils are characterized by the low electrical resistance layer, the dissolution rock belt is represented by a resistivity gradient belt, the filling material dissolved cave show the abnormal low resistance body. The electrical structure of the landfill is characterized by the low resistivity landfill zone surrounded by high resistance impervious area, no low resistance channel gradient belt, the landfill anti-seepage effect is good.

Key words: transit electromagnetic method (TEM), urban geological and environment survey, pseudo magnetiotelluric, karst, garbage pollution

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