岩土工程学报Issue(11)：2103-2109,7.DOI:10.11779/CJGE201411017
坑道瞬变电磁全程数据分析及1∶1含水模型试验研究
All-time data analysis of transient electromagnetic method for tunnels and investigation on 1∶1 water model
摘要
Abstract
Considering the transition of receiving system and the turn-off time of currents, the expressions for impulse response function, primary electromotive force and secondary all-time induced electromotive force are derived. On this basis, the all-time response signals received by receiving coil are restored. The comparative analysis of the receiving and theoretical all-time data shows that the turn-off time of currents and the transition of receiving system distort the early and middle window time data, resulting in undistinguishable electrical information obtained by data processing in short range ahead of tunnels. To assess the impact of aberration data on the advanced water detection in a tunnel, a 1:1 quantitative sump model ahead of the tunnel is established. Through the continuous observation and analysis of the transient field data in different water less than 100 m3, the transient exception response characteristics of water are obtained. It is shown that the response time of the water model is within the time range of the aberration data, and it is further indicated that the technology of advanced water detection must be improved to increase the advanced forecast accuracy.关键词
瞬变电磁/坑道超前探水/全程响应/畸变数据/近距离地电信息/1∶1含水模型Key words
transient electromagnet/advanced water detection in tunnel/all-time response/aberration data/short-range electrical information/1∶1 water model分类
建筑与水利引用本文复制引用
胡雄武,张平松,吴荣新,李培根,付茂如..坑道瞬变电磁全程数据分析及1∶1含水模型试验研究[J].岩土工程学报,2014,(11):2103-2109,7.基金项目
国家自然科学基金重点项目（51134012）；高等学校博士学科点专项科研基金项目 （）
