| 节理剪切试验及其表面形貌特征变化分析 |
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| 引用本文： | 曹平,范祥,蒲成志,陈锐,周罕,郑欣平,张春阳. 节理剪切试验及其表面形貌特征变化分析[J]. 岩石力学与工程学报, 2011, 30(3): 480-485 |
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| 作者姓名： | 曹平 范祥 蒲成志 陈锐 周罕 郑欣平 张春阳 |
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| 作者单位： | (1. 中南大学 资源与安全工程学院,湖南 长沙 410083;2. 中国有色金属工业昆明勘察设计研究院,云南 昆明 650051) |
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| 基金项目： | 国家自然科学基金资助项目(10972238); 教育部博士点基金资助项目(20090162110037); 中南大学创新创业启航资助项目(CX24) |
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| 摘 要： | 节理表面形貌是影响节理抗剪强度的重要因素之一。采用试验方法研究岩石节理表面形貌与其抗剪强度之间的关系;运用RYL–600岩石剪切流变仪对天然岩石节理在不同法向应力下进行剪切试验,得到不同法向应力下节理的抗剪强度曲线,并运用TALYSURF CLI 2000扫描仪将节理表面在每次剪切前后进行高精度激光扫描测试,得到岩石节理表面的三维扫描图。分析节理在不同法向应力作用下的抗剪强度与节理表面形貌变化的关系,计算岩石节理表面轮廓平均角的加权平均值 ,发现随着法向应力的增加,节理峰值抗剪强度增加,随着剪切次数增加, 呈减小趋势。说明节理的抗剪强度与法向应力和节理表面形貌特征参数 有关。
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| 关 键 词： | 岩石力学节理剪切试验抗剪强度形貌轮廓线平均角 |
| 收稿时间： | 2010-10-16; |
SHEAR TEST OF JOINT AND ANALYSIS OF MORPHOLOGY CHARACTERISTIC EVOLUTION OF JOINT SURFACE |
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| CAO Ping,FAN Xiang,Pu Chengzhi,CHEN Rui,ZHOU Han,ZHENG Xinping,ZHANG Chunyang. SHEAR TEST OF JOINT AND ANALYSIS OF MORPHOLOGY CHARACTERISTIC EVOLUTION OF JOINT SURFACE[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(3): 480-485 |
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| Authors: | CAO Ping FAN Xiang Pu Chengzhi CHEN Rui ZHOU Han ZHENG Xinping ZHANG Chunyang |
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| Affiliation: | (1. School of Resources and Safety Engineering,Central South University,Changsha,Hunan 410083,China;;2. Kunming Prospecting and Design Institute of China Non-ferrous Metals Industry,Kunming,Yunnan 650051,China) |
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| Abstract: | The morphology of joint surface is one of the key factors affecting shear strength of joint.Relationships between morphology of joint surface and shear strength of joint are studied experimentally.Shear tests of natural rock joint under different normal stresses are conducted with RYL-600 rock shear-rheological instrument,and the relationships between shear stress and shear displacement under different normal stresses are obtained.Topographical measurements are carried out prior to and after shear tests wit... |
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| Keywords: | rock mechanics joint shear test shear strength morphology mean profile angle |
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