| 加载速率对含预制锯齿状结构面类岩石试件力学性质的影响研究 |
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| 引用本文： | 马艾阳,王波,孔德铭,韩世礼,段先哲,李玲珂. 加载速率对含预制锯齿状结构面类岩石试件力学性质的影响研究[J]. 南华大学学报(自然科学版), 2020, 34(5): 9-13 |
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| 作者姓名： | 马艾阳 王波 孔德铭 韩世礼 段先哲 李玲珂 |
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| 作者单位： | 南华大学 资源环境与安全工程学院,湖南 衡阳421001;稀有金属矿产开发与废物地质处置技术湖南省重点实验室,湖南 衡阳421001;南华大学 资源环境与安全工程学院,湖南 衡阳421001;东华理工大学 地球科学学院,江西 南昌330013;南华大学 资源环境与安全工程学院,湖南 衡阳421001 |
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| 基金项目： | 湖南省自然科学基金项目(2018JJ2327);大学生研究性学习和创新性实验计划项目(S201910555111;2017XJXZ014;2018XJXZ058) |
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| 摘 要： | 采用RMT-150B岩石力学电液刚性伺服控制试验系统对含预制锯齿状结构面类岩石试件进行了单轴压缩试验,包括4级不同的加载速率,定量地分析了加载速率对峰值强度及加载速率对应变等物理力学性态的影响。结果表明,在静态加载速率下,含预制锯齿状结构面类岩石试件的峰值强度与加载速率呈非线性正相关,峰值强度以及对应的应变值与加载速率呈非线性负相关,破坏形式为沿结构面滑动剪切啃断式破坏,锯齿啃断面积基本随应变速率增大而增加。
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| 关 键 词： | 锯齿状结构面 加载速率 峰值强度 锯齿啃断面积 |
| 收稿时间： | 2020-07-02 |
Effect of Loading Rate on Mechanical Properties of Surface Rock Specimens with Prefabricated Serrated Structure |
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| MA Aiyang,WANG Bo,KONG Deming,HAN Shili,DUAN Xianzhe,LI Linke. Effect of Loading Rate on Mechanical Properties of Surface Rock Specimens with Prefabricated Serrated Structure[J]. Journal of Nanhua University(Science and Technology), 2020, 34(5): 9-13 |
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| Authors: | MA Aiyang WANG Bo KONG Deming HAN Shili DUAN Xianzhe LI Linke |
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| Affiliation: | School of Resource Environment and Safety Engineering,University of South China,Hengyang, Hunan 421001,China;Hunan Key Laboratory of Rare Metal Minerals Exploitation and Geological Disposal of Waste,Hengyang,Hunan 421001,China;School of Resource Environment and Safety Engineering,University of South China,Hengyang, Hunan 421001,China;School of Earth Sciences,East China University of Technology,Nanchang,Jiangxi 330013,China |
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| Abstract: | According to uniaxial compression deformation test on concrete samples with precast serrated structural surface under 4 different loading rate by RMT-150B rock mechanics experimental system,influence of loading rate on peak strength as well as the corresponding strain was analyzed quantitatively.Conclusions were drawn:1)Under the static loading rate,the peak strength has a nonlinear positive correlation with the loading rate;2)The peak strength as well as the corresponding strain is negatively correlated with the loading rate;3)The failure mode is sliding shear and nibbling failure along the structural surface,and the area of nibbling failure basically has a nonlinear positive correlation with the loading rate. |
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| Keywords: | serrated structural plane loading rate peak strength the area of nibbling failure |
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