坚硬顶板薄煤层开采沿空留巷关键技术研究
赵法森, 吴城乐, 林科文, 刘飞翔
Key technology of gob-side entry retaining in thin coal seam with hard roof#br#
煤炭工程 . 2023, (8): 6 -11 .  DOI: 10.11799/ce202308002