| 砂岩单三轴压缩过程中声发射特征的试验研究 |
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| 引用本文： | 苏承东,翟新献,李宝富,李怀庆. 砂岩单三轴压缩过程中声发射特征的试验研究[J]. 采矿与安全工程学报, 2011, 28(2): 225-230 |
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| 作者姓名： | 苏承东 翟新献 李宝富 李怀庆 |
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| 作者单位： | 1. 河南理工大学能源科学与工程学院,河南,焦作,454003
2. 登封市煤炭协会,河南,登封,454570 |
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| 基金项目： | 国家自然科学基金项目(50974054); 教育部高等学校博士点基金项目(20070460001) |
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| 摘 要： | 利用RMT-150B岩石力学试验系统,对义马曹窑煤矿顶板砂岩进行单轴、常规三轴和三轴卸围压试验,加载同时进行声发射检测.试验结果表明,岩样压缩变形破坏过程中的声发射参数与加载方式有关.单轴压缩时,各个阶段均有不同程度的声发射事件,声发射事件较为强烈,累计计数和能量明显偏高;常规三轴压缩时,岩样屈服前声发射事件较少,屈服...
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| 关 键 词： | 岩石力学 砂岩 加载方式 声发射 声发射计数 声发射能量 |
Experimental Study of the Characteristics of Acoustic Emission for Sandstone Specimens Under Uniaxial and Triaxial Compression Tests |
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| SU Cheng-dong,ZHAI Xin-xian,LI Bao-fu,LI Huai-qing. Experimental Study of the Characteristics of Acoustic Emission for Sandstone Specimens Under Uniaxial and Triaxial Compression Tests[J]. Journal of Mining and Safety Engineering, 2011, 28(2): 225-230 |
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| Authors: | SU Cheng-dong ZHAI Xin-xian LI Bao-fu LI Huai-qing |
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| Affiliation: | SU Cheng-dong1,ZHAI Xin-xian1,LI Bao-fu1,LI Huai-qing2(1.School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo,Henan 454003,China,2.Dengfeng Coal Administration,Dengfeng,Henan 454570,China) |
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| Abstract: | Uniaxial and triaxial compression tests and triaxial unloading confining-pressure tests for roof sandstones form Caoyao Coal Mine,Yima Coal Group,were carried out with a servo-controlled test machine RMT-150B,and the acoustic emission(AE) detections were conducted at the same time.The results indicate that there are different AE events in various conventional compression tests.AE events are different during uniaxial compression tests,but totally high in energy and accumulation number.During triaxial compres... |
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| Keywords: | rock mechanics sandstone loaded mode acoustic emission(AE) acoustic emission counts acoustic emission energy |
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