北皂煤矿易自燃厚煤层综放采空区自燃氧化"三带"的确定
북조매광역자연후매층종방채공구자연양화"삼대"적학정
Determination of "Three Belt" of Spontaneous Combustion Oxygenation in Gob of Full-mechanized Sublevel Caving Faces in Combustible Thick Coal Seam of Beizao Coal Mine