A layering and partially filling coal mining method of thick seams
A thick coal seam, layered mining technology, applied in filling, ground mining, mining equipment and other directions, can solve problems such as resource loss, and achieve the effects of reducing filling cost, high coal recovery rate, and simple method
Inactive Publication Date: 2015-08-12
CHINA UNIV OF MINING & TECH
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Abstract
The invention relates to a coal mining method suitable for thick seams under buildings, railroads and water bodies, and particularly relates to a layering and partially filling coal mining method of thick seams. The method includes reasonably dividing a thick seam into an upper layer and a lower layer; subjecting the upper layer to full-filling mining firstly; and after mining of the upper layer is finished and the upper layer is stabilized, subjecting the lower layer to strip gap filling mining by adopting the upper layer as a false roof. The method can reduce loss of resources of remaining coal pillars during thick seam mining, effectively controls ground depression, has important significance for efficient mining of thick seams under "buildings, railroads and water bodies" or thick seams needing ground protection, and achieves green, efficient and safe mining of coal mines.
Application Domain
Underground miningSurface mining +1
Technology Topic
Coal pillarMineralogy +3
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