Study on Calculation Method of Top Coal Yield with Thick Gangue
In view of the fact that the release rate of top coal is difficult to calculate,taking the Ⅱ863 working face of Huaibei Zhuxianzhuang Coal Mine as the research background,using similar simula-tion test of bulk medium flow and field measurement test of top coal release rate.The top coal recovery of different layers,and to analyze the motion pattern.The results show that the average release rate of top coal in the similar simulation test is 78％.The average release rate of top coal in the field test was 77.8％.The top coal release rate of different layers presents the law of"low at two ends and high in the middle".This study not only realized the calculation of the release rate of thick gangue top coal.It also provides a scientific basis for the mining of thick gangue and top coal with complex structure.
万方数据
维普
