| 基于地应力转移的拱形围岩稳定性 |
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| 引用本文： | 杨鑫,李玉寿,刘卫群. 基于地应力转移的拱形围岩稳定性[J]. 黑龙江科技学院学报, 2011, 21(6): 450-453 |
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| 作者姓名： | 杨鑫 李玉寿 刘卫群 |
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| 作者单位： | 1. 中国矿业大学力学与建筑工程学院,江苏徐州,221116
2. 中国矿业大学深部岩土与工程国家重点实验室,江苏徐州,221008 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2009CB219605);国家自然科学基金项目(41074040) |
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| 摘 要： | 为了研究综放开采方式下围岩的应力分布特征,以大佛寺煤矿40301综放工作面为背景,基于理想弹塑性本构模型及Drucker-Prager屈服准则,利用ANSYS有限元软件,探讨围岩拱形存在的合理性,分析采场周围应力场的分布规律。结果表明：工作面前方的应力随开挖的进行总体呈现增长趋势,其峰值所在位置随着围岩拱形高跨比的变小而逐渐远离工作面。
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| 关 键 词： | 围岩拱形 高跨比 ANSYS |
Study on stability of arch-shaped surrounding rock with ground stress transfer |
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| YANG Xin,LI Yushou,LIU Weiqun. Study on stability of arch-shaped surrounding rock with ground stress transfer[J]. Journal of Heilongjiang Institute of Science and Technology, 2011, 21(6): 450-453 |
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| Authors: | YANG Xin LI Yushou LIU Weiqun |
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| Affiliation: | 1 (1.School of Mechanics & Civil Engineering,China University of Mining & Technology,Xuzhou 221116,China; 2.State Key Laboratory for Geomechanics & Deep Underground Engineering,China University of Mining & Technology,Xuzhou 221008,China) |
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| Abstract: | Aimed at identifying the stress distribution of surrounding rock marked by the method of top-coal caving mining,this paper describe the use of ANSYS to study on the rationality of arch-shaped surrounding rock existence and analyze the stress field around the stope,building on 40301 coal mining face in Dafo Temple Mine and perfect elasto-plastic model and Drucker-Prager criterion.The results show that the stress ahead the coal mining face tend to increases with the processing of excavation and the distance between the place of stress peak and the coal mining face increases with the decrease in the arch-shaped surrounding rock＇s depth-span ratio. |
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| Keywords: | arch-shaped surrounding rock depth-span ratio ANSYS |
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