Study on top coal caving of fully-mechanized caving face in extra thick coal seam of Tashan Coal Mine
CHEN Xiaowei
Abstract：To study the top coal caving of the fully-mechanized caving face in extra thick coal seams,combining the mining conditions of the No.5 coal seam in Tashan Coal Mine,the main influencing factors of the top coal caving from the aspects of burial depth,coal body strength,coal body crack development degree,gangue strength and thickness,and mining-caving ratio were analyzed.The numerical sim-ulation of the impact of mining of the No.2 and No.5 coal seams on the top coal crushing effect was also conducted.After taking corre-sponding measures based on theoretical analysis and numerical simulation results,the degree of fragmentation of the gangue was high,and the top coal caving performance was good,achieving the expected engineering effect.
Keywords：fully-mechanized caving with large mining heighttop coal containing ganguetop coal cavingnumerical simulation
Publication Date：2024-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 32-38 )