Simulation Study on the Influence Degree of Large Metal Interference in Tunnel Transient Electromagnetic Advanced Detection

Mingwei Liu

Abstract


Tunnel advance prediction, large metal (trolley) has a great impact on the detection results of transient electromagnetic method. Due to the limitation of excavation step, the moving distance of large metal (trolley) is limited, which has always existed. In this paper, a certain proportion model is set for simulation research, combined with the corresponding characteristics of different positions simulated based on MATLAB software, and its influence law is analyzed. The research shows that the influence of large metal (trolley) on transient electromagnetic decreases with the distance from the wire frame. When the distance reaches 40m, the influence area is the same. It plays a good guiding role in on-site construction cooperation and detection.


Keywords


Tunnel; Transient Electromagnetic Method; Large Metal; Influence;

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References


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DOI: https://doi.org/10.18686/esta.v9i1.221

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