摘要
富水隧道开挖过程中,隧道掌子面面临突水、突泥等风险,对安全施工威胁很大。目前的地质超前预报技术在探测掌子面前方水害方面仍存在一些问题。鉴于此,文章开展掌子面前方含水构造物理模拟试验,总结瞬变电磁响应规律。试验和实际应用表明:使用多匝小线圈瞬变电磁法探测技术,能够较准确地探测出不同距离上的异常体位置。采用多方向、多角度的三维瞬变电磁数据采集技术,将解释成果三维立体显示,克服了传统瞬变电磁探测成果无法显示异常体空间范围的弊端,有效提高了成果解释的形象性和直观性,为该技术在隧道中的应用和发展提供了新的思路。
Working face might suffer from water and mud inrush during excavation of a water-rich tunnel,which poses a great threat to construction safety.By physical modeling of the water-bearing structure in front of the work⁃ing face,the transient electromagnetic response law is summarized.The test and practice show that the positions of abnormal bodies at different distances can be captured accurately by using multi-turn small-coil transient electro⁃magnetic method;by using the multi-directional and multi-angle three-dimensional transient electromagnetic data acquisition technique,the results will be displayed in three-dimensional way,which overcomes the shortcomings of the traditional transient electromagnetic detection that the spatial scope of abnormal body can′t be displayed and ef⁃fectively improves the visualization and intuition of results interpretation.
作者
邢修举
吴正飞
张依瑞
蒋齐平
XING Xiuju;WU Zhengfei;ZHANG Yirui;JIANG Qiping(Xi′an Research Institute,China Coal Technology and Engineering Group Corp,Xi′an 710077)
出处
《现代隧道技术》
EI
CSCD
北大核心
2020年第1期162-167,共6页
Modern Tunnelling Technology
基金
国家自然科学基金(NSFC41674133)
天地科技股份有限公司青年基金项目(2019TDQN028)
关键词
铁路隧道
突水
瞬变电磁探测
物理模拟试验
三维数据采集
三维成图
Railway tunnel
Water inrush
Transient electromagnetic detection
Physical simulation test
Three-di⁃mensional data acquisition
Three-dimensional mapping
