| 含瓦斯煤声发射特性试验及损伤方程研究 |
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| 引用本文： | 赵洪宝,尹光志.含瓦斯煤声发射特性试验及损伤方程研究[J].岩土力学,2011,32(3):667-671. |
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| 作者姓名： | 赵洪宝 尹光志 |
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| 作者单位： | 1. 中国矿业大学 煤炭资源与安全开采国家重点实验室，北京 100083；2. 中国矿业大学（北京）资源与安全工程学院，北京 100083； 3. 重庆大学 资源及环境科学学院，重庆 400030 |
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| 基金项目： | 国家自然科学基金项目(，国家自然科学基金重点项目，煤炭资源与安全开采国家重点实验室开放课题，中央高校基本科研业务费资助项目 |
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| 摘 要： | 以型煤试件为研究对象，对其在固定瓦斯压力和围压作用下的力学性质和声发射特性进行了试验研究。结果表明：含有瓦斯后煤样试件的力学性质的离散性降低；与不含瓦斯煤样比较，含瓦斯煤样的三轴强度减小而杨氏模量增大；含瓦斯煤样三轴压缩过程中的声发射事件计数分布较均匀，仅在煤样破坏前出现密度较大区；声发射事件振幅分布呈现“三峰”分布特性，而事件能量随变形增加而逐渐增大；声发射各事件参数与三轴压缩曲线呈滞后对应关系。
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| 关 键 词： | 声发射 含瓦斯煤 损伤方程 力学性质 |
| 收稿时间： | 2009-09-23 |
Study of acoustic emission characteristics and damage equation of coal containing gas |
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| ZHAO Hong-bao,YIN Guang-zhi.Study of acoustic emission characteristics and damage equation of coal containing gas[J].Rock and Soil Mechanics,2011,32(3):667-671. |
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| Authors: | ZHAO Hong-bao YIN Guang-zhi |
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| Institution: | 1. State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China; 2. School of Resources and Safety Engineering, China University of Mining and Techonology (Beijing), Beijing 100083 China; 3. College of Resources and Environmental Science, Chongqing University, Chongqing 400030, China |
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| Abstract: | Mechanical properties and acoustic emission characteristics of briquette samples are studied under fixed gas pressure and confining pressure.The results show: mechanical properties discreteness of coal containing gas is decreased because of gas existing;triaxial strength is decreased and Young's modulus is increased compared with coal;acoustic emission events are comparatively well distributed in process of triaxial compression of coal containing gas;the concentrated regions only appear at near damage regio... |
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| Keywords: | acoustic emission coal containing gas damage equation mechanical properties |
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