Frequency spectrum analysis on micro-seismic signal of rock bursts induced by dynamic disturbance

被引：5

作者：

Xu X. ^{[1
,2
]}

Dou L. ^{[1
]}

Lu C. ^{[1
]}

Zhang Y. ^{[3
]}

机构：

[1] State Key Laboratory of Coal Resources and Mine Safety, School of Mines, China University of Mining and Technology

[2] School of Energy Science and Engineering, Henan Polytechnic University

[3] Yuejin Coal Mine of Yima Coal Mining Group

来源：

Mining Science and Technology | 2010年 / 20卷 / 05期

关键词：

dynamic disturbance; Fourier transform; frequency spectrum analysis; inducing; micro-seismic; rock burst;

D O I：

10.1016/S1674-5264(09)60262-3

中图分类号：

学科分类号：

摘要：

Blasting and breaking of hard roof are main inducing causes of rock bursts in coal mines with danger of rock burst, and it is important to find out the frequency spectrum distribution laws of these dynamic stress waves and rock burst waves for researching the mechanism of rock burst. In this paper, Fourier transform as a micro-seismic signal conversion method of amplitude-time character to amplitude-frequency character is used to analyze the frequency spectrum characters of micro-seismic signal of blasting, hard roof breaking and rock bursts induced by the dynamic disturbance in order to find out the difference and relativity of different signals. The results indicate that blasting and breaking of hard roof are high frequency signals, and the peak values of dominant frequency of the signals are single. However, the results indicate that the rock bursts induced by the dynamic disturbance are low frequency signals, and there are two obvious peak values in the amplitude-frequency curve witch shows that the signals of rock bursts are superposition of low frequency signals and high frequency signals. The research conclusions prove that dynamic disturbance is necessary condition for rock bursts, and the conclusions provide a new way to research the mechanism of rock bursts. © 2010 China University of Mining and Technology.

引用

页码：682 / 685

页数：3

共 17 条

[1]

Dou L.M., He X.Q., Theory and Technology of Rock Burst Prevention, (2001)

[2]

Jiang Y.D., Zhao Y.X., Song Y.Q., Liu W.G., Zhu D.J., Analysis of blasting tremor impact on roadway stability in coal mining, Chinese Journal of Rock Mechanics and Engineering, 24, 17, pp. 31-36, (2005)

[3]

Kang Z.H., Cao Z.X., Ding X.D., Wang Y.X., Disturbance response criterion based rock burst analysis, Journal of Hohai University, 31, 2, pp. 119-123, (2003)

[4]

Xie Y.M., Li T.B., Primary discussion on blast's affection on rock burst, Chinese Journal of Geological Hazard and Control, 15, 1, pp. 61-64, (2004)

[5]

Qin H., Mao X.B., Numerical simulation of stress wave induced rock burst, Journal of Mining & Safety Engineering, 25, 2, pp. 127-131, (2008)

[6]

Peng W.H., Lu A.H., Numerical simulation of layered crack and failure of roadway surrounding rock under the action of stress wave, Journal of Mining & Safety Engineering, 25, 2, pp. 213-216, (2008)

[7]

Gao M.S., Dou L.M., Zhang N., Xie Y.S., Zheng B.S., Simulation of the relationship between roadway dynamic destruction and hypocenter parameters, Journal of China University of Mining & Technology, 18, 1, pp. 93-97, (2008)

[8]

Mu Z.L., Dou L.M., Zhang G.W., Zhang S.B., Li Z.H., Zhang J., Study of prevention methods of rock burst disaster caused by hard rock roof, Chinese Journal of Rock Mechanics and Engineering, 35, 6, pp. 737-741, (2006)

[9]

Cheng Y.H., Jiang F.X., Cheng J., The primary study on micro-seismic locating and monitoring technology of shock bump caused by key straum movement, Journal of China Coal Society, 31, 3, pp. 273-277, (2006)

[10]

Lu C.P., Dou L.M., Wu X.R., Frequency spectrum analysis on micro-seismic monitoring and signal differentiation of rock material, Chinese Journal of Geotechnical Engineering, 27, 7, pp. 772-775, (2005)

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