Coal Engineering ›› 2025, Vol. 57 ›› Issue (7): 87-94.doi: 10. 11799/ ce202507013

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Hard roof control technology under residual coal pillar through hydraulic fracturing with long directional borehole

  

  • Received:2024-12-09 Revised:2025-04-14 Online:2025-07-11 Published:2025-08-14

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