Air leakage mechanism and hole sealing technology in directional long-drilled perimeter rock-borehole composite fissures: for Gas enrichment in varying coal-seam thickness change areas
Xuexi Chen, Peixue Han, Jiaying Hu, Tao Yang, Aitao Zhou, Jihong Sun
Topics & Concepts
BoreholeCoal miningGeologyLeakage (economics)Composite numberGeotechnical engineeringPetroleum engineeringWellboreCoalMining engineeringEngineeringMaterials scienceComposite materialWaste managementEconomicsMacroeconomicsCoal Properties and UtilizationRock Mechanics and ModelingGeotechnical and Geomechanical Engineering