| 缓倾斜厚煤层综放开采顶煤采出率数值模拟 |
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| 引用本文： | 谢耀社,宋晓波,胡艳峰,秦健.缓倾斜厚煤层综放开采顶煤采出率数值模拟[J].煤炭科学技术,2008,36(6). |
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| 作者姓名： | 谢耀社 宋晓波 胡艳峰 秦健 |
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| 作者单位： | 中国矿业大学,江苏,徐州,221008 |
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| 摘 要： | 建立了缓倾斜厚煤层综采长壁放顶煤二维颗粒流模型(PFC2d,Particle Flow Code-2d),根据实际生产情况,设计了16个正交实验.通过对试验数据进行回归分析,得出了顶煤厚度、顶煤垮落角、放煤步距、支架尾梁摆角与顶煤采出率的关系;运用方差分析法,将4个因素对顶煤采出率影响的显著性进行了研究,得出了顶煤垮落角对顶煤采出率影响特别显著,顶煤厚度、支架尾梁摆角对顶煤回收率影响比较显著,放煤步距对顶煤采出率的影响显著性较小的结论.
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| 关 键 词： | 顶煤采出率 离散元 顶煤厚度 缓倾斜厚煤层 |
Numerical simulation on top coal recovery ratio of fully mechanized top coal caving mining in gently inclined thick seam |
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| XIE Yao-she,SONG Xiao-bo,HU Yan-feng,QIN Jian.Numerical simulation on top coal recovery ratio of fully mechanized top coal caving mining in gently inclined thick seam[J].Coal Science and Technology,2008,36(6). |
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| Authors: | XIE Yao-she SONG Xiao-bo HU Yan-feng QIN Jian |
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| Affiliation: | XIE Yao-she,SONG Xiao-bo,HU Yan-feng,QIN Jian(China University of Mining , Technology,Xuzhou 221008,China) |
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| Abstract: | A two dimension particle flow code model was established for the fully mechanized longwall top coal caving mining in the gently inclined thick seam.According to the actual production conditions,16 orthogonal experiments ware designed.After the regressive analysis on the experimental data,the relationship between the top coal thickness,top coal falling angle,coal caving distance and the support tai beam swing angle to the top coal recovery ratio ware obtained.With the square differential analysis method,the ... |
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| Keywords: | top coal recovery ratio separation element top coal thickness gently inclined thick seam |
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