顶煤回收率与直接顶厚度关系的PFC数值模拟研究  

Research on Relationship of Top-coal Recovery Ratio and Height of Immediate Roof with PFC Numerical Simulation

作　　者：张会军[1] 闫少宏[1] 毛德兵[1] 张学亮[1] 

机构地区：[1]煤炭科学研究总院开采设计研究分院,北京100013

出　　处：《煤矿开采》2009年第6期7-9,共3页Coal Mining Technology

基　　金：国家科技支撑计划重大专项:大采高综放开采工艺技术研究(项目编号:2008BAB36B01)

摘　　要：综放开采顶煤回收率,除与煤层条件、放煤工艺和放煤工的责任心有关外,还与直接顶厚度及其在底板的堆积特征有关系。运用PFC软件对不同厚度的顶煤、直接顶进行了大量数值模拟研究,得出了顶煤回收率与直接顶厚度的定性认识。Top-coal recovery ratio of full-mechanized caving mining is related to not only coal seam condition, top-coal caving tech- nique and workers sense of responsibility but also height of immediate roof and its damping state on floor. This paper applied PFC to numerical simulating different heights of top-coal and immediate roof and obtained qualitative relationship of top-coal recovery ratio and immediate roof.

关 键 词：顶煤回收率 直接顶 PFC 综放开采 

分 类 号：TD823.49[矿业工程—煤矿开采]