REСORDING OF NATURAL ELECTROMAGNETIC RADIATION IN A RAILWAY TUNNEL UNDER GEODEFORMATION AND TECHNOGENIC LOADS
Yu. S. Isaev, A. D. Basov, K. V. Romanevich
JSC Research, Design and Survey Institute Lenmetrogiprotrans, Saint Petersburg, Russia
Keywords: Natural electromagnetic radiation, seismic vibrations, accelerogram, vibration, stress-strain state, spectrogram, tunnel lining, resonance, frequency
Abstract
The results of influence exerted by technogenic and natural deformation effects on the resonance response in seismoacoustic and electromagnetic fields are presented and possibility of its use to control the stress-strain state in geotechnical systems is studied. This research aims at increasing the information level of the method for recording natural electromagnetic radiation to monitor the stress-strain state in railway tunnels. Experimental work is carried out to record electromagnetic radiation when electric trains passed the tunnels in areas with different engineering and geological conditions and depths.
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