| 基于雁型裂纹模型的高地应力巷道劈裂破坏机理分析 |
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| 引用本文： | 浦海,聂韬译.基于雁型裂纹模型的高地应力巷道劈裂破坏机理分析[J].采矿与安全工程学报,2011,28(4):585-588. |
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| 作者姓名： | 浦海 聂韬译 |
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| 作者单位： | 中国矿业大学深部岩土力学与地下工程国家重点实验室,力学与建筑工程学院,江苏徐州221008 |
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| 基金项目： | 国家自然科学青年基金项目(50904065); 教育部新世纪优秀人才支持计划项目(NCET-09-0728),教育部博士点新教师基金项目(20090095120007); 江苏省高校“青蓝工程”项目; 中国矿业大学中央高校基本科研业务费专项资金项目 |
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| 摘 要： | 基于雁型裂纹模型,对高地应力巷道的劈裂破坏形成机理进行探讨.利用应力强度因子理论,分析了雁型分支裂纹尖端的应力强度因子及其主应力,结合Hoek-Brown岩石破坏准则,得到了高地应力巷道劈裂破坏的判据.将劈裂破坏判据编成FISH语言,内嵌到FLAC软件中,计算得到围岩的劈裂破坏区域.研究表明:雁型裂纹长度越长,造成的劈...
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| 关 键 词： | 高地应力巷道 应力强度因子 雁型裂纹 劈裂破坏 |
Analysis on the Splitting Failure Mechanism of High-Stress Roadway Based on Echelon Crack Model |
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| PU Hai,NIE Tao-yi.Analysis on the Splitting Failure Mechanism of High-Stress Roadway Based on Echelon Crack Model[J].Journal of Mining and Safety Engineering,2011,28(4):585-588. |
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| Authors: | PU Hai NIE Tao-yi |
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| Affiliation: | PU Hai,NIE Tao-yi(State Key Laboratory for Geomechanics and Deep Underground Engineering,School of Mechanics and Civil Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221008,China) |
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| Abstract: | The splitting failure mechanism of the roadway under high-stress is studied in this paper,based on the echelon crack model.By using the stress intensity factor theory,we analyze the stress intensity factor and principal stress in crack tip of echelon branch,and obtain the criterion of splitting failure in the high-stress roadway by Hoek-Brown rock failure criterion.In addition,the criterion is programmed into FISH language and embedded into FALC software,and the splitting failure zone of surrounding rock is... |
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| Keywords: | high-stress roadway stress intensity factor echelon crack splitting failure |
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