| 大倾角松软厚煤层巷道支护的不连续变形分析 |
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| 引用本文： | 郭东明,杨仁树,王雁冰,朱现磊,孙鹰. 大倾角松软厚煤层巷道支护的不连续变形分析[J]. 煤炭科学技术, 2011, 39(4): 21-24,28 |
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| 作者姓名： | 郭东明 杨仁树 王雁冰 朱现磊 孙鹰 |
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| 作者单位： | 1. 深部岩土力学与地下工程国家重点实验室,北京,100083;中国矿业大学(北京)力学与建筑工程学院,北京,100083
2. 中国矿业大学(北京)力学与建筑工程学院,北京,100083 |
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| 基金项目： | "十一五"国家科技支撑计划资助项目，中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 针对杜家村矿北翼回风巷大倾角松软厚煤层条件下支护难题,采用了不连续变形分析(DDA)方法进行了无支护、锚杆支护、锚杆+锚索联合支护、锚杆+锚索+W型钢带+高强度塑料网联合支护的数值分析,模拟了巷道在不同支护条件下的变形破坏过程,比较了这4种支护方式下围岩的变形、垮落情况。研究表明:大倾角松软厚煤层巷道采用锚杆+锚索+W型钢带+高强度塑料网联合支护形式效果最佳,其两帮移近量仅为38.5 mm,顶底板移近量为62.3 mm。
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| 关 键 词： | 大倾角松软厚煤层 巷道支护 不连续变形分析(DDA) 变形破坏 |
Discontinuous Deformation Analysis on Gateway Support in High Inclined Soft and Thick Seam |
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| GUO Dong-ming,YANG Ren-shu,WANG Yan-bing,ZHU Xian-lei,SUN Ying. Discontinuous Deformation Analysis on Gateway Support in High Inclined Soft and Thick Seam[J]. Coal Science and Technology, 2011, 39(4): 21-24,28 |
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| Authors: | GUO Dong-ming YANG Ren-shu WANG Yan-bing ZHU Xian-lei SUN Ying |
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| Affiliation: | GUO Dong-ming1,2,YANG Ren-shu1,WANG Yan-bing2,ZHU Xian-lei2,SUN Ying2(1.State Key Lab for Deep Rock and Soil Mechanics and Underground Engineering,Beijing 100083,China,2.School of Mechanics and Architecture Engineering,China University of Mining and Technology(Beijing),China) |
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| Abstract: | According to the support difficulty of the air returning way in a high inclined soft and thick seam of North Wing,Dujiacun Mine,a discontinuous deformation analysis(DDA) was applied to the numerical analysis on the non support,bolt support,bolt support + anchor combined support and the bolt + anchor + W steel band + high strength plastic mesh combined support and to simulate the deformation failure process of the gateway under the different support conditions.A comparison was conducted on the surrounding ro... |
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| Keywords: | high inclined soft and thick seam gateway support discontinuous deformation analysis(DDA) deformation failure |
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