摘要
隧道/煤矿巷道掌子面前方致灾地质因素探查一直是困扰安全掘进的工程难题。为解决超前探测存在的问题,提出了一种基于钻杆供电的超前探测方法。该方法利用掘进钻杆作为供电电极,将激发电流"传输"到迎头前方,在巷道/已有的钻孔内布设测量电极,接收电位信号。数值模拟结果表明,与传统的三极探测方法相比,基于钻杆供电方法极大提高了测量异常的幅度,大大提高了测量结果的准确度和可信度。
Buried geological factors exploration in front of tunnel constraints/coal workface is an engineering problems which plagues safe driving.In order to solve the problems of advanced detection,a method power supply by drill pipe has been put forward in this paper.Taking the excavating pipe as an electrode,the excitation current was transmitted to ahead of constraints,electrode were arranged in the roadway or inside the bore to measure the potential.The numerical simulation results show that compared with traditional three pole detection method,the anomaly were improved significantly when power supply by drill pipe,the accuracy and reliability of the measurement result was enhanced greatly.
作者
刘磊
智庆全
范涛
LIU Lei;ZHI Qingquan;FAN Tao(Xi'an Research Institute of China Coal Technology & Engineering Group Corp, Xi'an 710077,China;Institute of Geophysical Exploration CAGS, Langfang 065000,China)
出处
《物探化探计算技术》
CAS
CSCD
2018年第6期757-763,共7页
Computing Techniques For Geophysical and Geochemical Exploration
基金
陕西自然基金基础科研项目(2016JM4007)
关键词
超前探测
钻杆供电
孔中接收
advanced detection
current supply by drilling pipe
receive in hole
