| 基于岩体三轴压缩试验的节理力学参数确定方法 |
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| 引用本文： | 王芝银,段品佳.基于岩体三轴压缩试验的节理力学参数确定方法[J].岩土力学,2011,32(11):3219-3224. |
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| 作者姓名： | 王芝银 段品佳 |
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| 作者单位： | 中国石油大学 城市油气输配技术北京市重点实验室,北京,102249 |
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| 摘 要： | 岩体节理面的刚度系数、黏结力和内摩擦角是反映节理面力学特性的重要参数。基于含不同倾角节理岩样的三轴压缩试验,通过对标准岩样的应力-位移分析,由互等功原理,建立节理岩样应变与位移新的几何关系,推导出弹性状态下节理刚度系数解析解,根据摩尔-库仑强度理论得出节理面的黏结力和内摩擦角。为了检验方法的正确性,对含节理面的同类岩体进行直接剪切试验,测出节理面的法向刚度、切向刚度、黏结力和内摩擦角。结果表明,两种方法所得结果基本吻合,说明所提出的方法可以通过节理岩样三轴压缩试验及理论分析间接得到岩体节理面的刚度系数、黏结力和内摩擦角,实现了节理岩体力学参数的简捷、快速测定。
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| 关 键 词： | 节理 刚度系数 强度指标 互等功原理 三轴压缩试验 |
| 收稿时间： | 2010-03-01 |
A new method for determining mechanical parameters of joints based on triaxiai compressive test for rock mass |
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| WANG Zhi-yin,DUAN Pin-jia.A new method for determining mechanical parameters of joints based on triaxiai compressive test for rock mass[J].Rock and Soil Mechanics,2011,32(11):3219-3224. |
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| Authors: | WANG Zhi-yin DUAN Pin-jia |
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| Institution: | Beijing Key Laboratory of Urban Oil and Gas Distribution Technology, China University of Petroleum, Beijing 102249, China |
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| Abstract: | The stiffness coefficients,cohesion,friction angle are the important parameters in reflecting the mechanical characteristics of the joints.Based on the tri-axial compressive tests for rock mass samples containing different joint angles and analysis to stress and displacement,the analytic solutions of stiffness coefficients in the elastic state can be deduced by establishing the new equations of strain and displacement according to the reciprocal work principle;and the cohesion and the friction angle of join... |
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| Keywords: | joint stiffness coefficient strength index reciprocal work principle triaxial compression test |
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