提高坚硬顶煤综放开采回收率的措施研究

Study on Measures of Improving Recovery Rate to Full-mechanized Caving Mining of Hard Top Coal

通过PFC数值模拟软件模拟顶煤冒落形态,探讨坚硬顶煤回收率与放煤步距间的量化关系,并分析了坚硬顶煤含矸率对顶煤回收率的影响。通过坚硬顶煤破碎块度,研究如何提高坚硬顶煤回收率,并给出提高坚硬顶煤回收率的具体措施。

The quantitative relationship between the top coal from coal and caving step recovery rate was explored with the top coal caving form softsimulation through PFC numerical simulation, and influence of the hard coal refuse rate on top coal recovery rate was anaiyzed. Through the hard top coal fragmentation, the measure of how to improve the hard top coal recovery rate was analyzed, and the concrete measures for improving the hard top coal recovery rate was given.