Research on Different Coal Discharge Methods Adapted to Coal Seam Dip Angle
China has a large number of coal mining with high inclination angle.These coal seams have large dip angle and are subject to different gravity and ground pressure.Therefore,using different coal discharge methods to mine inclined coal seam will produce different effects.In order to study the mining effect of coal seams with different dip angles,PFC 2D simulation analysis was used to simulate the coal discharge process of three coal discharge methods in coal seams with different dip angles,and the top coal discharge rate was statistically analyzed.The results show that when the coal seam dip angle is less than 35 °,the effect of single round sequential coal discharge is the best,and when the coal seam dip angle is greater than 35 °,the effect of double round sequential coal discharge is the best.
coal seam with high inclination anglecoal discharge methodtop coal discharge ratesimulation analysis
NETL
NSTL
万方数据
