摘要
EH4电磁成像系统是CSAMT与MT结合的双源型电磁法数据自动采集和处理的物探系统。本文介绍了EH4电磁成像系统的原理、特点、工作方法和资料处理。通过对宁武高速公路S4段隧道勘察,结合其它手段,成功解译出了隧道的软弱层、地下水及断层破碎带的位置。同时说明,该方法可对隧道的软弱层、地下水及断层破碎带的赋存进行超前的宏观预测。
EH4 electromagnetic image system is a set of dual-power electromagnetic auto collecting and processing geophysical exploration system.It is a combination of CSAMT and MT.This paper describes principles,characteristics,procedures and data analysis of EH4 using a case study in survey and investigation of the expressway tunnel in Fujian.EH4 locates soft and weak layer,underground water and broken fractures successfully with assistance of other technical methods,which provides advanced information needed for classification of surrounding rocks of the tunnel.
出处
《工程地球物理学报》
2010年第3期323-326,共4页
Chinese Journal of Engineering Geophysics
关键词
EH4电磁成像系统
隧道工程
高速公路
EH4 electromagnetic image system
tunnel engineering
expressway
