| 岩石损伤断裂的沙堆元胞自动机模拟 |
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| 引用本文： | 尹光志,张东明,王浩.岩石损伤断裂的沙堆元胞自动机模拟[J].岩土力学,2005,26(6):986-989. |
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| 作者姓名： | 尹光志 张东明 王浩 |
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| 作者单位： | 1. 重庆大学,资源及环境科学院,重庆,400044
2. 重庆大学,西南资源开发及环境灾害控制工程教育部重点实验室,重庆,400044 |
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| 基金项目： | 国家自然科学基金(50374084)，重庆市应用基础研究项目(编号:8015). |
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| 摘 要： | 在岩石材料的加载过程中,当荷载超过某一临界值时,岩石的变形从稳定变形阶段突变为不稳定变形阶段,即使是保持荷载不变,破裂也会继续发展,表现为“雪崩”式的破坏过程。基于自组织临界性理论及沙堆元胞自动机模型,对岩石失稳破坏过程中的损伤演化、裂纹扩展规律进行了探讨,从新的角度研究了岩石失稳破坏的细观演化规律。
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| 关 键 词： | 岩石 失稳 破坏 沙堆模型 |
| 文章编号： | 1000-7598-(2005)06-0986-05 |
| 收稿时间： | 2005-02-28 |
A BTW approach to damage and fracture of rock |
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| YIN Guang-zhi,ZHANG Dong-ming,WANG Hao.A BTW approach to damage and fracture of rock[J].Rock and Soil Mechanics,2005,26(6):986-989. |
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| Authors: | YIN Guang-zhi ZHANG Dong-ming WANG Hao |
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| Institution: | 1. College of Resources and Environmental Science, Chongqing University, Chongqing 400044, China； 2. Key Laboratory of Exploitation of Southwestern Resources & Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, China；3. College of Mathematics and Science, Chongqing University, Chongqing 400044, China |
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| Abstract: | During loading process, deformation of rock will come into an unstable stage if the load is above a critical value. That is, the failure will evolve continuously under constant load. An ‘avalanche’ phenomenon appears in the failure process of rock. Based on SOC theory and BTW model, the damage evolvement and crack propagation rate are studied on instability and failure of rock. This presents a new approach to research the mesoscope evolvement law of rock failure. |
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| Keywords: | rock instability failure BTW model |
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