Research on key technologies of high-efficiency mining and backfilling for soft and extra-thick coal seams in Laoshidan coal mine
Zhao Yi, Zhang Yaoyao, Tian Suchuan, Lai Wan'an
China Safety Science Journal . 2026, (S1): 108 -114 .  DOI: 10.16265/j.cnki.issn1003-3033.2026.S1.0017