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[1]赵扬锋,李兵,张超,等.不同组合比例煤岩的电荷感应与微震规律试验研究[J].中国安全生产科学技术,2019,15(1):107-112.[doi:10.11731/j.issn.1673-193x.2019.01.017]
　ZHAO Yangfeng,LI Bing,ZHANG Chao,et al.Experimental study on charge induction and microseismic laws of coal and rock with different combination ratios[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2019,15(1):107-112.[doi:10.11731/j.issn.1673-193x.2019.01.017]
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不同组合比例煤岩的电荷感应与微震规律试验研究
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
15
期数:
2019年1期
页码:
107-112
栏目:
职业安全卫生管理与技术
出版日期:
2019-01-31

文章信息/Info

Title:
Experimental study on charge induction and microseismic laws of coal and rock with different combination ratios
文章编号:
1673-193X(2019)-01-0107-06
作者:
赵扬锋; 李兵; 张超; 程传杰
(辽宁工程技术大学 力学与工程学院，辽宁 阜新 123000)
Author(s):
ZHAO Yangfeng;  LI Bing;  ZHANG Chao;  CHENG Chuanjie
(School of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China)
关键词:
组合煤岩; 失稳破坏; 微震; 电荷感应
Keywords:
combined coal and rock;  instability failure;  microseismic;  charge induction
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2019.01.017
文献标志码:
A
摘要:
针对煤岩在屈服破坏过程中有微震和电荷信号产生这一特征，利用自行设计的微震和电荷感应信号监测试验系统，分析不同组合比例煤岩在变形破裂过程中微震和电荷信号的变化规律。研究结果表明：微震和电荷信号是低频信号，信号频谱集中分布在0~80 Hz，应力突变与微震信号和电荷信号的产生及变化有较好的一致性；随着“煤-岩”高度比的增加，试样的单轴抗压强度减小，试样屈服破裂时微震和电荷信号幅值增大，同步性增强，试件破坏的突发性增强；试件破坏过程中电荷比微震信号数更多，初次明显的电荷信号也早于初次明显的微震信号。
Abstract:
Aiming at the characteristic that the microseismic and charge signals will generate in the yield failure process of coal and rock, the variation laws of the microseismic and charge signals during the deformation and fracture process of coal and rock with different combination ratios were analyzed by using the selfdesigned monitoring experimental system of microseismic and charge induction signals. The results showed that the microseismic and charge signals were the low frequency signals, the spectrum of the signals was concentrated in 0~80 Hz, and the stress mutation was in good agreement with the generation and variation of microseismic and charge signals. With the increase of coalrock height ratio, the uniaxial compressive strength of specimens decreased, and when the specimens occurred yield fracture, the amplitude of microseismic and charge signals increased, the synchronism increased, and the sudden failure of the specimens strengthened. The number of charge signals was more than that of microseismic signals during the failure process of specimens, and the first obvious charge signal appeared earlier than the first obvious microseismic signal.

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相似文献/References:

[1]肖晓春,樊玉峰,吴迪,等.组合煤岩力学性质与声-电荷信号关系研究[J].中国安全生产科学技术,2018,14(2):126.[doi:10.11731/j.issn.1673-193x.2018.02.020]
　XIAO Xiaochun,FAN Yufeng,WU Di,et al.Study on relationship between mechanical properties and acoustic emission-charge signals of combined coal-rock[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2018,14(1):126.[doi:10.11731/j.issn.1673-193x.2018.02.020]

备注/Memo

备注/Memo:
收稿日期： 2018-10-17
基金项目： 国家自然科学基金面上项目(51274114)；国家重点研发计划项目（2016YFC0801403）
作者简介： 赵扬锋，博士，教授，主要研究方向为矿山灾害力学。
更新日期/Last Update: 2019-01-31