Effect evaluation of pressure relief and gas drainage of hydraulic punching in short-distance coal seam group with the risk of outburst

Effect evaluation of pressure relief and gas drainage of hydraulic punching in short-distance coal seam group with the risk of outburst Journal of Mining and Safety Engineering . 2021, (3): 634 -642 . DOI: 10.13545/j.cnki.jmse.2020.0206