Experiment in metal disturbance during advanced detection using a transient electromagnetic method in coal mines  

作　　者：JIANG Zhihai YUE Jianhua YU Jingcun 

机构地区：[1]School of Resources and Geoscience, China University of Mining & Technology, Xuzhou 221008, China [2]State Key Laboratory of Geomechanics and Deep Underground Engineering,China University of Mining & Technology, Xuzhou 221008, China

出　　处：《Mining Science and Technology》2010年第6期861-863,共3页矿业科学技术（英文版）

基　　金：support received from the National Basic Research Program of China (No2007CB209400);the National Natural Science Foundation of China (No50774085);the Young Scientists Fund of the School Science Foundation of CUMT (No2008A046)

摘　　要：Tunneling machines, or excavators, are large and good conductors and affect the reliability of data gathering and interpretation in advanced detection using transient electromagnetic methods. In our experiment, we used a coincident-loop and central loop type of configuration, where the coil plane l） vertical to and 2） parallel to the working face. A SIROTEM instrument at different locations was used to observe the transient electromagnetic responses of the excavator and to analyze the response amplitudes. The result shows that the tunneling machine affects the advanced detection data and is related to the way the coil is coupled. When the excavator is 6 m from the observatory, the interference of tunneling machine can be ignored.Tunneling machines, or excavators, are large and good conductors and affect the reliability of data gathering and inter-pretation in advanced detection using transient electromagnetic methods. In our experiment, we used a coincident-loop and central loop type of configuration, where the coil plane 1) vertical to and 2) parallel to the working face. A SIROTEM instrument at differ-ent locations was used to observe the transient electromagnetic responses of the excavator and to analyze the response amplitudes. The result shows that the tunneling machine affects the advanced detection data and is related to the way the coil is coupled. When the excavator is 6 m from the observatory, the interference of tunneling machine can be ignored.

关 键 词：transient electromagnetic method advanced detection metal disturbance driving face 

分 类 号：P631.325[天文地球—地质矿产勘探] TN972[天文地球—地质学]