| 岩石变形破坏全过程的概率损伤方法研究 |
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| 引用本文： | 曹文贵,赵明华,田政海.岩石变形破坏全过程的概率损伤方法研究[J].湖南科技大学学报(自然科学版),2004,19(4):21-24. |
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| 作者姓名： | 曹文贵 赵明华 田政海 |
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| 作者单位： | 湖南大学,岩土工程研究所,湖南,长沙,410082 |
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| 基金项目： | 高等学校博士学科点专项科研项目 |
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| 摘 要： | 从岩石内部裂隙、空洞和界面等缺陷的随机性分布特征出发,基于反映岩石内部缺陷的微元强度服从随机分布的概念,并基于Drucker-Prager岩石破坏准则,提出了岩石微元强度的表示方法.利用岩石微元强度服从Weibull与正态分布的特性,分别建立了反映岩石变形破坏全过程的损伤概率本构模型,试验结果表明所提出的两种模型均具有明显的合理性与优越性.图1,参10.
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| 关 键 词： | 岩石破裂全过程 损伤 Weibull分布 微元强度 正态分布 |
| 文章编号： | 1672-9102(2004)04-0021-04 |
| 修稿时间： | 2004年6月8日 |
Research on method for probability damage on the full process of rock deformation and failure |
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| CAO Wen-gui,ZHAO Ming-hua,TIAN Zheng-hai.Research on method for probability damage on the full process of rock deformation and failure[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2004,19(4):21-24. |
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| Authors: | CAO Wen-gui ZHAO Ming-hua TIAN Zheng-hai |
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| Abstract: | Based on the characteristics of random distribution of fissure,void and interface,and the concept of random distribution of strength of rock micro-unit,this authois brought forward computation formulae for rock micro-unit strength using Drucker-Prager criterion.The probability damage constitutive models have separately been established founded on Weibull and normal distribution,and it compared with test results and former methods and indicates that there are obvious rationality and superiority on the two models.1fig.,10refs. |
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| Keywords: | rock failure process damage Weibull distribution micro-unit strength normal distribution |
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