串联电极法聚焦电流隧道前探效果的仿真分析  

The simulation of the effect of tunnel ahead exploration by the series electrode current focusing method

作　　者：张宇[1] 赵斌[1] 

机构地区：[1]华中科技大学机械科学与工程学院,武汉430074

出　　处：《物探化探计算技术》2015年第6期705-708,共4页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：国家重点基础研究发展计划-'973计划'资助项目(2013CB035405)

摘　　要：目前BEAM聚焦电流法隧道超前探测的研究取得了一些进展,但由于隧道施工的复杂性,该技术的运用存在一定的局限性。这里在BEAM系统特点的基础上,结合三电极侧向测井方法,提出一种电流串联法系统,可实现动态掘进过程中的地质体视电阻高速、高精度测量。通过仿真比较BEAM系统方法与电流串联法系统,可以看出,两种方法对于异常体的探测灵敏度基本相同。Recently,the tunnel ahead exploration by BEAM current focusing method has made some progress,but this method has certain limitation because of the complexity of the tunnel construction.This paper provided a system by the series electrode based on BEAM and the lateral logging by the three electrodes,and this system can get the resistance of the geology body rapidly and accurately in the process of dynamic excavating.By comparing BEAM and the system of the series electrode through simulation,we can conclude that these two methods are basically the same about the detection sensitivity of the abnor-mal body.

关 键 词：聚焦电流 电压并联法 电流串联法 侧向测井 探测灵敏度 

分 类 号：P631.811[天文地球—地质矿产勘探]