Aiming at the mining effect of different coal discharge methods,based on the working conditions of the working face,a simulation analysis model is established based on PFC,and three types of single-round sequence,single-round interval and double-round sequence are simulated.Through the statistical analysis of the coal releasing process and coal releasing results,the results show that the best mining effect is obtained by using double-round sequential coal releasing,and the top coal extraction rate obtained by coal releasing at this time is the highest,and the gangue rate is the lowest.
维普
万方数据