| Stability analysis for main roof of roadway driving along next goaf |
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| 引用本文： | 柏建彪. Stability analysis for main roof of roadway driving along next goaf[J]. 煤炭学报(英文版), 2003, 9(1): 22-27 |
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| 作者姓名： | 柏建彪 |
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| 作者单位： | School of |
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| 摘 要： | Focusing on the stability of surrounding rock around the roadway driving along next goaf with a narrow coal pillar, a mechanics model of the triangle block structure of main roof above the roadway is established, and the sliding stability coefficient K1 and the rotation sta-bility coefficient K2 are proposed to describe the stability of the triangle block structure quanti-tatively. The structure can keep a self stability before and after the roadway excavation, at the stage of mining-induced effect, the stability of the structure is lowered, and the structure may become instability with decreasing the coal strength, increasing the mining height ofworking face and the mining depth.
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| 关 键 词： | 稳定性 顶板 巷道 三角块结构 模型 矿脉走向 综放沿空掘巷 |
Stability analysis for main roof of roadway driving along next goaf |
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| BAI Jian biao. Stability analysis for main roof of roadway driving along next goaf[J]. Journal of Coal Science & Engineering(China), 2003, 9(1): 22-27 |
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| Authors: | BAI Jian biao |
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| Affiliation: | School of Energy Science and Engineering, China University of Mining & Technology, Xuzhou 221008, China |
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| Abstract: | Focusing on the stability of surrounding rock around the roadway driving along next goaf with a narrow coal pillar, a mechanics model of the triangle block structure of main roof above the roadway is established, and the sliding stability coefficient K 1 and the rotation stability coefficient K 2 are proposed to describe the stability of the triangle block structure quantitatively. The structure can keep a self stability before and after the roadway excavation, at the stage of mining induced effect, the stability of the structure is lowered, and the structure may become instability with decreasing the coal strength, increasing the mining height of working face and the mining depth. |
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| Keywords: | roadway driving along next goaf triangle block structure stability analysis |
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