| 大理岩节理表面形态对剪切强度影响的数值模拟 |
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| 引用本文： | 王〓庆,荣〓冠,陈〓特.大理岩节理表面形态对剪切强度影响的数值模拟[J].水电能源科学,2012,30(6):70-73. |
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| 作者姓名： | 王〓庆 荣〓冠 陈〓特 |
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| 作者单位： | 1. 武汉大学 水资源与水电工程科学国家重点实验室,湖北武汉430072;武汉大学水工岩石力学教育部重点实验室,湖北武汉430072
2. 武汉大学 水资源与水电工程科学国家重点实验室,湖北武汉,430072 |
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| 基金项目： | 国家自然科学基金资助项目（50879081，50979063）；国家重点基础研究发展计划（973计划）基金资助项目(2011CB013501，2010CB732005) |
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| 摘 要： | 利用PFC3D模拟了大理岩节理岩体的直剪试验,实现了在剪切过程中考虑节理形态的影响。以某一大理岩人工劈裂节理形态为例,通过傅里叶变换进行滤波将节理形态分离成高频和低频形态,用PFC3D模拟节理形态然后进行剪切数值试验,获得了剪切应力、剪切位移、法向位移、裂隙数量等参数。计算结果表明,节理形态对节理的剪切强度有不同的影响,本文分离节理形态的方法可行。
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| 关 键 词： | 岩体节理形态 剪切强度 PFC3D 高低频分离 数值模拟 |
Numerical Simulation of Impact of Surface Topography on Rock Joint Shear Strength |
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| WANG Qing,RONG Guan and CHEN Te.Numerical Simulation of Impact of Surface Topography on Rock Joint Shear Strength[J].International Journal Hydroelectric Energy,2012,30(6):70-73. |
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| Authors: | WANG Qing RONG Guan and CHEN Te |
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| Affiliation: | State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education,Wuhan University, Wuhan 430072, China;Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education,Wuhan University, Wuhan 430072, China;Key Laboratory of Rock Mechanics in Hydraulic Structural Engineering, Ministry of Education,Wuhan University, Wuhan 430072, China |
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| Abstract: | PFC3D is used to simulate direct shear test of the marble jointing rock mass. The influence of jointing surface topography is considered in the shear process. Taking artificial splitting of the marble jointing surface topography for an example, it is divided into high and low frequency partition by using Fourier transform filter. Then PFC3D is used to simulate the surface topography. Finally, the shear stress, shear displacement, normal displacement and crack numbers are obtained by shear test. The results show that the jointing surface topography has different impact on shear strength of the joint, and the proposed method of jointing surface topography partition is feasible. |
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| Keywords: | rock jointing surface topography shear strength PFC3D filter of high and low frequency numerical simulation |
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