【摘要】 基于聚焦电流法的隧道超前探测BEAM(Bore-tunnelling Electrical Ahead Monitoring)的研究取得了一些进展,但由于BEAM综合法的局限性,使得发现隧道掌子面前方有异常体后,仍无法判断异常体的具体方位。因此在BEAM系统的基础上,提出了一种基于周向电极扫描差动电压法的测量手段,有限元方法仿真表明,该测量方法可以判定异常体在掌子面前方的方位。更多还原

【Abstract】 Recently,some progress has been made in the tunnel ahead exploration by BEAM’s current focusing method.Due to the limitation of the BEAM comprehensive method,the anomalous body’s direction is unable to get.We put forward a measuring method which is based on circumference electrode sweep and differential voltage.This method could confirm the location of anomalous body after finite element method simulation.更多还原