| 河下综放开采覆岩破坏特征研究 |
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| 引用本文： | 刘飞,张强. 河下综放开采覆岩破坏特征研究[J]. 煤炭技术, 2014, 0(9): 163-165 |
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| 作者姓名： | 刘飞 张强 |
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| 作者单位： | 中国矿业大学资源与地球科学学院 |
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| 基金项目： | 国家自然科学基金资助项目(41272343) |
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| 摘 要： | 为了研究河流下综放工作面开采的覆岩破坏特征,防止突水溃沙,以山西某矿综采工作面的相关地质条件为背景,应用FLAC3D建立数值模拟模型,对工作面覆岩应力分布和塑性屈服区发育特征进行分析,得出了该工作面两侧煤柱附近出现应力集中,中部覆岩出现卸压区,覆岩导水裂隙带发育最大高度62 m。
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| 关 键 词： | 覆岩破坏 应力分布 数值模拟 导水裂隙带 |
Failure Characteristics Study of Overburden in Fully Mechanized Mining under River |
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| LIU Fei;ZHANG Qiang. Failure Characteristics Study of Overburden in Fully Mechanized Mining under River[J]. Coal Technology, 2014, 0(9): 163-165 |
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| Authors: | LIU Fei ZHANG Qiang |
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| Affiliation: | LIU Fei;ZHANG Qiang;School of Mineral Resource and Earch Science,China University of Mining and Technology; |
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| Abstract: | In order to grasp the overburden failure development features of fully mechanized caving under river,preventing water bursting sand inrush,based on the relevant geological conditions of mechanized mining face in Shanxi Province,determine rock and boundary parameters,engineering geological model is established by FLAC3 Dto analyze overburden stress distribution and characteristics of plastic yield zone,the results show that stress concentration occurs near both sides of coal pillar and central overburden appeared pressure released area,height of water flowing fractured zone is 62 m. |
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| Keywords: | overburden failure stress distribution numerical simulation water flowing fractured zone |
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