| 大断面薄层状顶板回采巷道支护技术 |
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| 引用本文： | 张西斌,张勇,李春元,刘传安,王祖发,郝志军. 大断面薄层状顶板回采巷道支护技术[J]. 煤炭科学技术, 2011, 39(7): 5-8,56 |
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| 作者姓名： | 张西斌 张勇 李春元 刘传安 王祖发 郝志军 |
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| 作者单位： | 中国矿业大学（北京）资源与安全工程学院,北京,100083 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2011CB201200) |
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| 摘 要： | 针对曙光煤矿回采巷道薄层状顶板易离层、冒落,两帮收敛严重,底鼓量大,大断面巷道变形破坏严重的现象,根据组合梁理论,采用离散元数值模拟分析了该巷道顶板冒落机理,依据机理需增加巷道支护的护顶面积及加强整体性稳定性,顶板采用300 mm×300 mm×28 mm钢托盘及12号槽钢配合锚网索联合支护,两帮分别采用W钢托板及钢带配合2 000 mm长锚杆支护。观测结果表明支护效果显著,大断面巷道顶底板累计移近量及两帮收敛量分别为179和132 mm,比原有巷道变形减少20%以上。
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| 关 键 词： | 大断面回采巷道 薄层状顶板 变形破坏 组合梁 支护技术 |
Support Technology of Mining Gateway with Large Section Thin Bedded Roof |
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| ZHANG Xi-bin,ZHANG Yong,LI Chun-yuan,LIU Chuan-an,WANG Zu-fa,HAO Zhi-jun,Beijing ,China). Support Technology of Mining Gateway with Large Section Thin Bedded Roof[J]. Coal Science and Technology, 2011, 39(7): 5-8,56 |
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| Authors: | ZHANG Xi-bin ZHANG Yong LI Chun-yuan LIU Chuan-an WANG Zu-fa HAO Zhi-jun Beijing China) |
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| Affiliation: | ZHANG Xi-bin,ZHANG Yong,LI Chun-yuan,LIU Chuan-an,WANG Zu-fa,HAO Zhi-jun(School of Resources and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China) |
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| Abstract: | According to the easy separation and falling of thin bedded roof,the serious convergence of the two side walls,high floor heaves of the mining gateway and the serious deformation and failure of large section mine roadway in Shuguang Mine,based on the combined beam theory,a dispersed element numerical simulation was applied to analyze the roof falling mechanism of the mine roadway.Base the mechanism,the roof protected area of the roadway support should be increased and the stability of the roadway integratio... |
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| Keywords: | large section mining gateway thin bedded roof deformation failure combined beam support technology |
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