EH4电磁成像系统在高速公路长大深埋隧道勘察中的应用研究  

APPLICATION OF EH4 ELECTROMAGNETIC IMAGE SYSTEM IN SURVEY OF DEEPLY-BURIED LONG TUNNELS FOR EXPRESSWAYS

作　　者：孙英勋[1] 

机构地区：[1]昆明理工大学

出　　处：《工程地质学报》2005年第4期546-550,共5页Journal of Engineering Geology

摘　　要：EH4电磁成像系统是一套双源型电磁法数据自动采集和处理的物探系统,它是CSAMT和MT的结合体。本文介绍了EH4的原理、特点、工作方法和资料处理。该系统首次运用于高速公路长大深埋隧道勘察中,结合其他手段,成功解译出了隧道的软弱层、地下水及断层破碎带的位置,为划分隧道围岩类别提供了较好的依据,同时也为高速公路长大深埋隧道提供了一种新的勘察方法。EH4 electromagnetic image system is a set of dual - power electromagnetic auto collecting and processing geophysieal exploration system. It is a eombination of CSAMT and MT. The paper deseribes principles, eharacteristies, procedures and data analysis of EH4 using a ease study in survey and investigation of the deeply - buried long tunnel in Expressway in Yunnan. EH4 sueeessfully loeated soft and weak layer, underground water and broken fractures with assistanee of other teehnieal methods, whieh provides additional information needed for elassifieation of surrounding roeks of the tunnel. This method also provides a new method for survey of deeply - buried long highway tunnels.

关 键 词：桥隧工程 EH4电磁成像系统 长大深埋隧道 电法勘探 高速公路 

分 类 号：U459.2[建筑科学—桥梁与隧道工程]