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介绍了瞬变电磁法(TEM)的原理、特点、工作方法和资料处理。该系统首次运用于云南省的高速公路深埋长隧道勘察中,结合其他手段,成功地解释出了隧道的岩性、地下水及断层破碎带的位置,为划分隧道围岩级别提供了较好的依据,同时也为高速公路深埋长隧道提供了一种新的勘察方法。
The principle, characteristics, working methods and data processing of transient electromagnetic method (TEM) are introduced. The system was firstly applied to the deep-buried long tunnel of expressway in Yunnan Province. Combined with other methods, the system successfully explained the lithology of the tunnel, the groundwater and the location of fault fracture zone, which provided a good Based on this, it also provides a new survey method for deep long tunnel of expressway.