Full-Scale Testing of Electromagnetic Radiation Recorder in Rocks during Coal Mining
M. V. Kurlenya1, N. V. Ledyaev2, A. A. Khamutskiy3, A. P. Khmelinin1, A. V. Patutin1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
2SUEK-Kuzbass JSC, Leninsk-Kuznetsky, Russia
3SIBKOR LLC, Leninsk-Kuznetsky, Russia
Keywords: Electromagnetic radiation, mine opening, recording system, monitoring, fracturing, rock pressure-induced events, stress-strain behavior, coal seam
Abstract
The full-scale testing results of fixed-site recorders of electromagnetic radiation preceding failure in rocks in a mine after installation of the recorders on mobile mining equipment are presented. The threshold values of the recorded signals, coincident with failure of roof areas in mine openings are found, and the frequencies of electromagnetic noise at the totally de-energized electric equipment of working faces, and at the dead and live production equipment are estimated. The recommendations on the improvement of the recorder design and recorded data processing are given.
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