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Application Of Geophysics In Coal Mining At Operation Stage

Journal of geophysics and engineering, volume 15, number 6.Dec 06, 2018 the field test in the tashan coal mine indied that the highlevel gas drainage lane was completely connected with the gob after hydraulic fracturing when the working face advanced 15 m, and the gas concentration at the upper corner of the working face was maintained at a level of 0.3 during the initial mining stage.

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