| 顶煤回收率与直接顶厚度关系的PFC数值模拟研究 |
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| 引用本文： | 张会军,闫少宏,毛德兵,张学亮.顶煤回收率与直接顶厚度关系的PFC数值模拟研究[J].煤矿开采,2009,14(6):7-9. |
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| 作者姓名： | 张会军 闫少宏 毛德兵 张学亮 |
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| 作者单位： | 煤炭科学研究总院,开采设计研究分院,北京,100013 |
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| 基金项目： | 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 |
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| 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。
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| 关 键 词： | 顶煤回收率 直接顶 PFC 综放开采 |
Research on Relationship of Top-coal Recovery Ratio and Height of Immediate Roof with PFC Numerical Simulation |
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| ZHANG Hui-jun,YAN Shao-hong,MAO De-bing,ZHANG Xue-liang.Research on Relationship of Top-coal Recovery Ratio and Height of Immediate Roof with PFC Numerical Simulation[J].Coal Mining Technology,2009,14(6):7-9. |
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| Authors: | ZHANG Hui-jun YAN Shao-hong MAO De-bing ZHANG Xue-liang |
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| Affiliation: | ZHANG Hui-jun,YAN Shao-hong,MAO De-bing,ZHANG Xue-liang(Mining & Designing Branch,China Coal Research Institute,Beijing 100011,China) |
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| Abstract: | Top-coal recovery ratio of full-mechanized caving mining is related to not only coal seam condition,top-coal caving technique 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. |
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| Keywords: | PFC |
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