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耿村煤矿微震信号时频特征及冲击地压前兆特征研究

张国华,  陈栋,  林松

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文章导航 > 工矿自动化  > 2021 >  47(12): 87-92
张国华, 陈栋, 林松. 耿村煤矿微震信号时频特征及冲击地压前兆特征研究[J]. 工矿自动化, 2021, 47(12): 87-92. doi: 10.13272/j.issn.1671-251x.2021080038
引用本文: 张国华, 陈栋, 林松. 耿村煤矿微震信号时频特征及冲击地压前兆特征研究[J]. 工矿自动化, 2021, 47(12): 87-92. doi: 10.13272/j.issn.1671-251x.2021080038
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ZHANG Guohua, CHEN Dong, LIN Song. Research on time-frequency characteristics of microseismic signal and precursory characteristics of rockburst in Gengcun Coal Mine[J]. Industry and Mine Automation, 2021, 47(12): 87-92. doi: 10.13272/j.issn.1671-251x.2021080038
Citation: ZHANG Guohua, CHEN Dong, LIN Song. Research on time-frequency characteristics of microseismic signal and precursory characteristics of rockburst in Gengcun Coal Mine[J]. Industry and Mine Automation, 2021, 47(12): 87-92. doi: 10.13272/j.issn.1671-251x.2021080038
shu

耿村煤矿微震信号时频特征及冲击地压前兆特征研究

doi: 10.13272/j.issn.1671-251x.2021080038
  • 1.

    1. 河南能源化工集团有限公司 安全健康环保监察局, 河南 郑州 450046;

  • 2.

    2. 中国矿业大学 安全工程学院, 江苏 徐州 221116

基金项目: 

国家自然科学基金青年科学基金项目(52104230)。

详细信息
    作者简介:

    张国华(1976-)，男，河南义马人，工程师，主要从事矿井冲击地压防治和煤自然发火防治方面的研究，E-mail:zhang_gh1@163.com。

  • 中图分类号: TD324

Research on time-frequency characteristics of microseismic signal and precursory characteristics of rockburst in Gengcun Coal Mine

  • 1.

    Safety, Health and Environmental Protection Supervision Bureau, Henan Energy and Chemical Industry Group Co., Ltd., Zhengzhou 450046, China;

  • 2.

    School of Safety Engineering, China University of Mining and Technology, Xuzhou 221116, China

    摘要
  • 摘要: 基于微震监测数据，利用快速傅里叶变换、小波包变换和希尔伯特黄变换等方法，对河南能源化工集团有限公司耿村煤矿13200工作面采动诱发的冲击地压事件及冲击地压发生前微震事件进行了时频特征分析，结果表明：冲击地压发生时主频在10 Hz以内，而冲击地压发生前微震事件波形的主频在100 Hz以内；冲击地压发生时最高能量分布频带在5以内，在冲击地压发生前的3次微震事件波形最高能量分布频带在10左右；冲击地压发生前的6次微震事件波形瞬时能量不高，表明冲击地压发生前存在能量的静默期。基于工作面冲击地压事件及冲击地压发生前微震事件的时频特征，得到了冲击地压前兆特征：微震事件波形主频在100 Hz以内，最高能量分布频带在10以内，且瞬时能量小于1.5。

     

    Abstract: Based on the microseismic monitoring data, the time-frequency characteristics of the rockburst events induced by mining in 13200 working face of Gengcun Coal Mine of Henan Energy and Chemical Industry Group Co., Ltd. and microseismic events before the rockburst events are analyzed by using fast fourier transform, wavelet packet transform and Hilbert-Huang transform. The results show that the main frequency of rockburst is within 10 Hz, and the main frequency of the microseismic event waveform before rockburst is within 100 Hz. The highest energy distribution frequency band is within 5 when rockburst occurs. The highest energy distribution frequency band of the previous three microseismic events waveforms is about 10. The instantaneous energy of the six microseismic event waveforms before rockburst is not high, indicating that there is a silent period of energy before rockburst occurs. Based on the time-frequency characteristics of rockburst events and microseismic events before rockburst, the precursor characteristics of rockburst are obtained. The main frequency of the microseismic event waveform is within 100 Hz, the highest energy distribution frequency band is within 10, and the instantaneous energy is less than 1.5.

     

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出版历程
  • 收稿日期:  2021-08-16
  • 修回日期:  2021-12-18
  • 刊出日期:  2021-12-20

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