Automatic Events Recognition in Low SNR Microseismic Signals of Coal Mine Based on Wavelet Scattering Transform and SVM

被引:18
作者
Fan, Xin [1 ]
Cheng, Jianyuan [2 ]
Wang, Yunhong [2 ]
Li, Sheng [2 ]
Yan, Bin [2 ]
Zhang, Qingqing [2 ]
机构
[1] Xian Univ Sci & Technol, Coll Geol & Environm, Xian 710054, Peoples R China
[2] China Coal Technol & Engn Grp Corp, Xian Res Inst Co Ltd, Xian 710077, Peoples R China
基金
中国国家自然科学基金;
关键词
mining water hazard; microseismic monitoring; intelligent recognition; feature extraction; support vector machine; classification model; CONVOLUTIONAL NEURAL-NETWORKS; SEISMIC DATA REGULARIZATION; SQUARES SPECTRAL-ANALYSIS; KARST FEATURES; IDENTIFICATION; TOMOGRAPHY; PICKING;
D O I
10.3390/en15072326
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The technology of microseismic monitoring, the first step of which is event recognition, provides an effective method for giving early warning of dynamic disasters in coal mines, especially mining water hazards, while signals with a low signal-to-noise ratio (SNR) usually cannot be recognized effectively by systematic methods. This paper proposes a wavelet scattering decomposition (WSD) transform and support vector machine (SVM) algorithm for discriminating events of microseismic signals with a low SNR. Firstly, a method of signal feature extraction based on WSD transform is presented by studying the matrix constructed by the scattering decomposition coefficients. Secondly, the microseismic events intelligent recognition model built by operating a WSD coefficients calculation for the acquired raw vibration signals, shaping a feature vector matrix of them, is outlined. Finally, a comparative analysis of the microseismic events and noise signals in the experiment verifies that the discriminative features of the two can accurately be expressed by using wavelet scattering coefficients. The artificial intelligence recognition model developed based on both SVM and WSD not only provides a fast method with a high classification accuracy rate, but it also fits the online feature extraction of microseismic monitoring signals. We establish that the proposed method improves the efficiency and the accuracy of microseismic signals processing for monitoring rock instability and seismicity.
引用
收藏
页数:13
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