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Study on surrounding rock modification and roadway support technology of pre-grouting by ground directional drilling in thick coal seam with gangue
李贤, 孟祥瑞, 程详, 赵光明, 顾清恒, 纪宝柱
Coal Engineering . 2023, (11): 64 -69 .  DOI: 10.11799/ce202311011