Staged hydraulic fracturing with directional long borehole for fully mechanized mining face in a shallow coal seam under hard roof
任建喜, 闫伟, 徐宝军, 苗彦平, 焦金照, 孙成伟, 王珂
Coal Engineering . 2025, (9): 49 -57 .  DOI: 10. 11799/ ce202509008