| 斜坡破坏过程的断裂力学分析 |
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| 引用本文： | 李永益.斜坡破坏过程的断裂力学分析[J].山地学报,1990(1). |
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| 作者姓名： | 李永益 |
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| 作者单位： | 中国科学院、水利部成都山地灾害与环境研究所 |
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| 基金项目： | 中国科学院青年奖励基金 |
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| 摘 要： | 本文运用断裂力学的原理和方法,分析了斜坡破坏过程中后缘开裂、滑动面的形成和结构面连通的机理,以及破坏中所遵循的轨迹。通过模拟实验、数值分析和应用,证明断裂力学方法是一种分析斜坡破坏机理的有效方法。
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| 关 键 词： | 断裂力学 斜坡破坏 断裂角 不连续面 |
FRACTURE MECHANICS ANALYSIS ON THE PROCESS OF SLOPE FAILURE |
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| Li Yongyi.FRACTURE MECHANICS ANALYSIS ON THE PROCESS OF SLOPE FAILURE[J].Journal of Mountain Research,1990(1). |
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| Authors: | Li Yongyi |
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| Abstract: | The present methods of mechanical analysis on slope .stability are unable to consider the process and geometric locus of slope failure. So fracture mechanics is applied to study slope failure and to .evaluate slope stability.The slope failures are assumed for a process of fracture mechanics in which discontinuous planes are produced or developed. With finite element and photoelastic stress analyses,following contents are discussed:the cracking and development of the cracks on the top of slopes, the shape of sliding, surface, the linkup of various structure planes inside slopes, and the relationship between fracture mechanics and rock sound radiation of slope.The research results show that the curvature of top cracking increases from top to inside of a slope,the shape of sliding surface of a landslide is more similar to an asymptote, and the linkup of structure planes also coincides with the fracture mechanics. Besides those, using fracture mechanics, people can reasonbly explain the sound radiation in a rupturing slope. |
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| Keywords: | fracture mechanics slope failure fracture angle discontinous plane |
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