| 不同深度顶板围岩对沿空巷道的影响分析 |
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| 引用本文： | 吴占瑞,漆泰岳.不同深度顶板围岩对沿空巷道的影响分析[J].煤炭技术,2012,31(10):62-64. |
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| 作者姓名： | 吴占瑞 漆泰岳 |
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| 作者单位： | 西南交通大学土木工程学院,成都,610031 |
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| 摘 要： | 为了研究软弱顶板和坚硬顶板对沿空巷道围岩的影响作用,采用二维有限差分软件FLAC2D进行计算分析。分析结果表明,随着开采深度的增大,软弱顶板巷道围岩变形以顶底板和两帮为主。坚硬顶板巷道围岩变形是以底板和两帮变形为主。坚硬顶板沿空巷道的底臌变形比较大,在开采过程中需注意底臌变形。
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| 关 键 词： | 沿空巷道 软弱顶板 坚硬顶板 数值计算 |
Analysis on Influence of Roof Surrounding Rock with Different Depth to Gob-side Entry |
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| WU Zhan-rui
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QI Tai-yue.Analysis on Influence of Roof Surrounding Rock with Different Depth to Gob-side Entry[J].Coal Technology,2012,31(10):62-64. |
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| Authors: | WU Zhan-rui QI Tai-yue |
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| Affiliation: | (School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China) |
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| Abstract: | In order to analyze the effect of the soft-weak roof and hard roof to the surrounding rock of the gob-side entry,the numerical simulation has been made by two-dimension finite differential code for FLAC2D.The analytical results indicate that with the increase of mining depth,the deformation of the surrounding rock for the soft-weak roof mainly occurrs in the roof,floor and two sides;for the hard roof,the deformation of the surrounding rock mainly happens in the floor and two sides.The value of the deformation of the floor heave for the gob-side entry of the hard roof is higher than that of the soft-weak roof,so it needs to pay more attention to the deformation of the floor heave in the process of the mining construction. |
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| Keywords: | gob-side entry soft-weak roof hard roof numerical simulation |
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