| 深采煤层巷道平动式冲击失稳三维模型研究 |
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| 引用本文： | 姜耀东,赵毅鑫,刘文岗,祝捷.深采煤层巷道平动式冲击失稳三维模型研究[J].岩石力学与工程学报,2005,24(16):2864-2869. |
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| 作者姓名： | 姜耀东 赵毅鑫 刘文岗 祝捷 |
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| 作者单位： | 中国矿业大学(北京校区)北京市岩石混凝土破坏力学重点实验室,北京,100083;中国矿业大学(北京校区)力学与建筑工程学院,北京,100083 |
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| 基金项目： | 国家自然科学基金重大项目(50490272)，国家重点基础研究发展规划(973)项目(2002CB412705)，国家自然科学基金资助课题(10302030)，高等学校博士学科点专项科研基金(20030290001)，教育部重大科技项目基金(10405(27)) |
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| 摘 要： | 在LippmannH关于冲击地压基本理论的基础上,建立了深采煤层巷道平动式冲击失稳三维准静态模型,模型可适用于顶底板为岩石的煤巷或半煤巷中发生煤层整体冲击失稳的机理分析。该模型考虑了煤层内部滑动摩擦对煤层突出的阻碍作用,分析了煤层整体突出前临界状态下的应力分布情况,得出了更合理的煤层突出范围度量指标及煤层整体突出倾向性的判定方法。结合赵各庄矿实际生产情况,分析了深部开采条件下煤层巷道动力失稳灾害的发生机理以及突出区域相关几何量之间的关系。
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| 关 键 词： | 采矿工程 巷道 冲击地压 模型 失稳 |
| 文章编号： | 1000-6915（2005）16-2864-06 |
| 收稿时间： | 2005-04-29 |
| 修稿时间： | 2005-04-29 |
INVESTIGATION ON THREE-DIMENSIONAL MODEL OF INSTABILITY OF TRANSLATORY COAL BUMPS IN DEEP MINING |
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| JIANG Yao-dong,ZHAO Yi-xin,LIU Wen-gang,ZHU Jie.INVESTIGATION ON THREE-DIMENSIONAL MODEL OF INSTABILITY OF TRANSLATORY COAL BUMPS IN DEEP MINING[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(16):2864-2869. |
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| Authors: | JIANG Yao-dong ZHAO Yi-xin LIU Wen-gang ZHU Jie |
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| Abstract: | A study of quasi-static three-dimensional model technique which shows the typical features of translatory coal bumps in deep coal mining is introduced. The three-dimensional model is studied on the basis of the elementary theory of bumps developed by Lippmann H. This model can be used to analyze the mechanism of coal bumps occurring in the roadways with rock roof and rock floor. The friction forces in the coal seam are considered in this three-dimensional model,and the pre-critical three-zone model for pressure distribution is analyzed. A simplified elastoplastic theory is applied to analyze the translatory bumps in deep mining and some basic mechanisms of bumps are revealed. The length of secondary stress distribution region is obtained which can be used to analyze the bumps potential of coal seam. The material properties of the coal from the Zhaogezhuang coal mine are used to prove the validity of the model;and the conclusions deduced from the theory are compared with the phenomena observed in-situ. The analytical results show that the blasting mining method is the main reason causing the incident in level No.11. The geometric parameter characteristics of this three-dimensional model are analyzed and some useful information is achieved. |
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| Keywords: | mining engineering roadway coal bumps model instability |
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