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[1]李鑫,杨桢,仝泽仁.受载复合煤岩变形破裂电磁辐射中频信号规律试验研究[J].中国安全生产科学技术,2016,12(6):30-35.[doi:10.11731/j.issn.1673-193x.2016.06.006]
　LI Xin,YANG Zhen,TONG Zeren.Experimental study on regularity of electromagnetic emission intermediate frequency signals in deformation and fracture of composite coal-rock under load[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(6):30-35.[doi:10.11731/j.issn.1673-193x.2016.06.006]
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受载复合煤岩变形破裂电磁辐射中频信号规律试验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年6期
页码:
30-35
栏目:
学术论著
出版日期:
2016-06-30

文章信息/Info

Title:
Experimental study on regularity of electromagnetic emission intermediate frequency signals in deformation and fracture of composite coal-rock under load
作者:
李鑫1;  杨桢1; 2; 仝泽仁1
（1. 辽宁工程技术大学 电气与控制工程学院，辽宁 葫芦岛 125105； 2.辽宁工程技术大学 安全科学与工程学院，辽宁 阜新 123000）
Author(s):
LI Xin1;  YANG Zhen1; 2;  TONG Zeren1
(1. College of Electrical and Engineering Control, Liaoning Technical University, Huludao Liaoning 125105, China; 2. School of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China)
关键词:
复合煤岩; 电磁辐射; 采集系统; 中频特性
Keywords:
composite coal-rock;  electromagnetic emission;  collection system;  intermediate frequency characteristics
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2016.06.006
文献标志码:
A
摘要:
采用自主研制的电磁辐射采集系统，深入研究受载复合煤岩变形破裂电磁辐射中频信号特性。在前置部分的天线和电缆之间加入巴伦，把从振子流过电缆屏蔽层外皮的高频电流截断，减小信号的传输损耗，提取电磁辐射信号，分析其在加载各个阶段的分布规律和特征。结果表明：复合煤岩受载破裂释放的电磁辐射能量主要集中于500 kHz～1 MHz中频段，电磁辐射信号整体与应力相关性较高，相关系数大于0.8。
Abstract:
The characteristics of electromagnetic emission (EME) intermediate frequency signals in deformation and fracture of composite coal-rock under load were studied by using the self-developed electromagnetic emission collection system. The balun was joined between the antenna and the cable in the front portion, and the high frequency current flowing from the transducer through the cable shield sheath was cut off, then the transmission loss of signal was reduced. The EME signals were extracted to analyze the distribution regularity and characteristics in various stages of loading. The results showed that EME energy released by fracture of composite coal-rock under load was mainly concentrated on the 500 kHz~1 MHz intermediate frequency band. The correlation between overall EME signals and stress was high, and the correlation coefficient was larger than 0.8.

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备注/Memo

备注/Memo:
国家自然科学基金青年基金项目（51204087）；校第五批生产技术问题创新研究基金项目（35）
更新日期/Last Update: 2016-06-30