|
|||||
|
|
| 节理岩体强度的分形统计分析 | |
| 引用本文： | 高峰,钟卫平,黎立云,谢和平.节理岩体强度的分形统计分析[J].岩石力学与工程学报,2004,23(21):3608-3612. |
| 作者姓名： | 高峰 钟卫平 黎立云 谢和平 |
| 作者单位： | 1. 中国矿业大学理学院,徐州,221008 2. 中国矿业大学力学与建筑工程学院,北京,100083 3. 四川大学,成都,610065 |
| 基金项目： | 国家重点基础研究发展规划(973)项目(2002CB412705，2002CB412707)资助课题。 |
| 摘 要： | 岩体中存在大量节理、裂隙，导致岩体力学性能弱化。基于岩体节理断裂扩展和剪切滑移2种失稳破坏机制，运用分形和统计断裂力学方法探讨了2种破坏方式下节理岩体的统计强度。结果表明，岩体强度与岩体中节理分布的分形维数密切相关，分形维数增大导致岩体强度非线性降低。 |
| 关 键 词： | 节理岩体 剪切滑移 岩体力学 失稳破坏 岩体强度 非线性 断裂力学 破坏方式 统计强度 裂隙 |
| 文章编号： | 1000-6915(2004)21-3608-05 |
| 收稿时间： | 2003-11-11 |
| 修稿时间： | 2004-3-8 |
FRACTAL AND STATISTICAL ANALYSIS OF STRENGTH OF JOINTED ROCKS |
|
| Gao Feng,Zhong Weiping,Li Liyun,Xie Heping.FRACTAL AND STATISTICAL ANALYSIS OF STRENGTH OF JOINTED ROCKS[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(21):3608-3612. | |
| Authors: | Gao Feng Zhong Weiping Li Liyun Xie Heping |
| Affiliation: | Gao Feng1,Zhong Weiping1,Li Liyun2,Xie Heping3 |
| Abstract: | Large number of joints exist in rocks. Their sizes and directions are distributed in a random way. Studies have shown that the distribution of joints can be quantitatively described by using the fractal dimensions. Based on two rupture modes,fracture propagation and shearing slide,the statistical strength of jointed rocks is derived with the help of the statistical fracture mechanics. The result shows that the strength of jointed rocks strongly depends on the fractal dimension of rock joints. The small increase of fractal dimension will lead to rapid decrease of rock strength. |
| Keywords: | rock mechanics fractal joints rock masses statistical strength |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《岩石力学与工程学报》浏览原始摘要信息 | |
| 点击此处可从《岩石力学与工程学报》下载全文 | |