Study of the prevention and control effect of residual coal pillars<sup>，</sup>chain failure after key pillar-double side backfilling#br#

Study of the prevention and control effect of residual coal pillars^，chain failure after key pillar-double side backfilling#br# Journal of Mining and Safety Engineering . 2023, (5): 945 -956 . DOI: 10.13545/j.cnki.jmse.2023.0241