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The roof drainage design and optimization of 3-1 upper 201 working face in Nalinhe No.2 Mine based on “three maps method”
刘守强, 靳立创, 郭森林, 阎宏图, 李沛涛, 丛秀蓁
Coal Engineering . 2024, (6): 117 -121 .  DOI: 10.11799/ce202406018