| 循环载荷作用时不同实验条件下砂岩的声发射特征实验研究 |
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| 引用本文： | 许江,唐晓军,姜永东,李树春.循环载荷作用时不同实验条件下砂岩的声发射特征实验研究[J].中国科技论文在线,2008(7):511-516. |
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| 作者姓名： | 许江 唐晓军 姜永东 李树春 |
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| 作者单位： | 重庆大学西南资源开发及环境灾害控制工程教育部重点实验室,重庆400044 |
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| 基金项目： | 国家自然科学基金项目（50574108）; 教育部博士点基金项目（20060611006）; 国家自然科学基金重点项目（50534080） |
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| 摘 要： | 通过循环载荷作用时不同位移速率、不同上限应力、不同下限应力以及不同水饱和度等实验条件下砂岩的声发射特性实验研究,探讨了循环载荷作用时不同实验条件下岩石的破坏损伤演化规律。研究结果表明,上限应力、下限应力、水饱和度等对岩石在承载过程中所发生的声发射事件数均有不同程度的影响,但位移速率对岩石在承载过程中所发生的声发射事件数的影响似乎不大。
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| 关 键 词： | 采矿工程 声发射 循环载荷 实验研究 砂岩 |
Experimental research on the acoustic emission characteristic of sandstone under the different experimental condition of cyclic loading |
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| XU Jiang,TANG Xiaojun,JIANG Yongdong,LI Shuchun.Experimental research on the acoustic emission characteristic of sandstone under the different experimental condition of cyclic loading[J].Sciencepaper Online,2008(7):511-516. |
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| Authors: | XU Jiang TANG Xiaojun JIANG Yongdong LI Shuchun |
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| Institution: | (Key laboratory for exploitation of Southwestern Resources and Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044) |
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| Abstract: | The failure damage evolution of sandstone under the different experimental condition of cyclic loadings is researched in this paper based on the acoustic emission characteristic of sandstone for different deformation rates, upper limit stresses, lower limit stresses or saturation in cyclic loading. The results show that the upper limit stress, the lower limit stress and the saturation affact acoustic emission （AE） characteristic of rock to some extent, but the deformation rates does not obviously affact AE characteristic of rock. |
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| Keywords: | mining engineering acoustic emission （AE） cyclic loading experimental research sandstone |
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