| 岩石破裂过程渗流与应力耦合分析 |
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| 引用本文： | 杨天鸿,唐春安,朱万成,冯启言.岩石破裂过程渗流与应力耦合分析[J].岩土工程学报,2001,23(4):489-493. |
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| 作者姓名： | 杨天鸿 唐春安 朱万成 冯启言 |
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| 作者单位： | 东北大学岩石破裂与失稳研究中心!辽宁沈阳110006；中国矿业大学资源与环境学院!江苏徐州221008； |
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| 基金项目： | 国家自然科学基金资助项目(49974009);国家重点基础研究发展规划973项目(95-13-07-01) |
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| 摘 要： | 通过对经典Biot渗流力学做进一步的考察 ,讨论了耦合渗流方程参数的物理意义 ,在Biot基本方程的基础上 ,增加一个反映渗透系数和孔隙变化率关系的耦合方程 ,并结合原有的RFPA弹性损伤本构方程 ,引入渗透率突跳系数 ξ这一概念 ,提出了岩石损伤演化过程渗流 -应力耦合方程 ,开发出岩石破裂过程渗流 -应力耦合分析系统F -RFPA2D,实例分析表明 ,这个系统能够对裂纹的萌生、扩展过程中渗透率演化规律及其渗流 -应力耦合机制进行模拟分析
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| 关 键 词： | 渗流与应力耦合 破坏过程 渗透率突跳系数 |
| 文章编号： | 1000-4548(2001)04-0489-05 |
| 修稿时间： | 2001年1月6日 |
Coupling analysis of seepage and stresses in rock failure process |
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| YANG Tianhong,TAN Chunan,ZHU Wancheng,FENG Qiyan.Coupling analysis of seepage and stresses in rock failure process[J].Chinese Journal of Geotechnical Engineering,2001,23(4):489-493. |
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| Authors: | YANG Tianhong TAN Chunan ZHU Wancheng FENG Qiyan |
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| Affiliation: | 1.Center for Rock Instability and Seismicity Research North east University Shenyang 110006 China 2.School of Resource Environment China University of Mining and Technology |
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| Abstract: | By reviewing Biot′s seepage mechanics theory,this paper discussed physical meaning of coupling seepage equation parameters.According to the basic equation of Biot′s seepage mechanics theory,a coupling equation is added to describe the variety of permeability and porosity.On the basis of elasticity damage equation in RFPA,a new concept of mutation coefficient of permeability is introduced into the equation,a coupling equation of seepage-stress in damage propagation process of rock is brought forward,and a new code of coupling analysis of flow and solid in Rock Failure Process Analysis (F-RFPA 2D ) is developed.The results show that seepage rule and coupling mechanism of seepage and stress in initiation,propagation and evolution of cracks can be simulated by the new code. |
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| Keywords: | coupling of seepage and stress progressive failure mutation coefficient of permeability |
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