| 不同应力速率下含水煤岩声发射信号特性 |
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| 引用本文： | 童敏明,胡俊立,唐守锋,戴新联.不同应力速率下含水煤岩声发射信号特性[J].采矿与安全工程学报,2009,26(1). |
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| 作者姓名： | 童敏明 胡俊立 唐守锋 戴新联 |
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| 作者单位： | 中国矿业大学,信息与电气工程学院,江苏,徐州,221116 |
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| 基金项目： | 教育部科技创新工程重大项目培育资会项目，国家重点基础研究发展规划(973计划) |
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| 摘 要： | 对不同应力速率下含水煤岩声发射频谱特性进行了实验和分析.结果表明,在煤岩的受载变形破裂过程中声发射是阵发性的,其声发射的频率特性较为单一.煤岩含水量的不同,对其声发射特性有一定影响.具体表现为对声发射强度的影响.含水量较大的煤岩较之含水量小的在声发射强度上略低.应力速率大时,声发射主要集中在煤岩破裂前的一段时间内;应力速率小时,煤岩破裂前的声发射较应力速率大时变少.在应力速率提高后,声发射在频次和幅度上有很明显的增加.
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| 关 键 词： | 煤岩 声发射技术 频谱特性 应力速率 |
Study of Acoustic Emission Signal Characteristic of Water-Containing Coal and Rock Under Different Stress Rates |
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| TONG Min-ming,HU Jun-li,TANG Shou-feng,DAI Xin-lian.Study of Acoustic Emission Signal Characteristic of Water-Containing Coal and Rock Under Different Stress Rates[J].Journal of Mining and Safety Engineering,2009,26(1). |
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| Authors: | TONG Min-ming HU Jun-li TANG Shou-feng DAI Xin-lian |
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| Affiliation: | School of Information and Electrical Engineering;China University of Mining & Technology;Xuzhou;Jiangsu 221116;China |
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| Abstract: | This paper analyzes acoustic emission spectrum of water-containing coal and rock under different stress rates through the experiment.The result shows that the acoustic emission of such coal and rock is paroxysmal in the process of deformation and fracture and its acoustic emission is simple.Different water content of coal and rock are different in acoustic emission characteristic,mainly in the effect on acoustic emission intensity.The more water the coal and rock contain,the lower acoustic emission intensit... |
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| Keywords: | coal and rock acoustic emission technology spectrum properties stress rate |
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