Research on Noise Reduction Method of Mining Rock Microseismic Signal Based on Geophone Array

2nd International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Ligang^1^2^3 ; Zhang, Yuansheng^1 ; Tao, Zhigang^2^3 ; Yang, Xiaocong^1

BGRIMM Technology GROUP, Beijing

102628, China^1

State Key Laboratory for GeoMechanics and Deep Underground Engineering, Beijing

100083, China^2

School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Beijing

100083, China^3

关键词: Channel signals;    Distribution characteristics;    Geophone array;    Microseismic events;    Microseismic signals;    Noise reduction methods;    Power frequency;    Rock fractures;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/490/3/032012/pdf
DOI  :  10.1088/1757-899X/490/3/032012

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The high stress and high rock burst risk brought by deep mining seriously threaten the safe and orderly development of mineral resources. The magnitude and spatial distribution characteristics of microseismic events caused by rock fracture can be used to evaluate and predict the stable state of mining rock. The correlation of channel signals in the same direction can be analyzed by arranging microseismic geophone arrays, and designed special filters for power frequency noise, blasting noise and circuit noise, which achieved better microseismic signal extraction effect, realized the suppression of random noise and improved the signal-to-noise ratio of microseismic monitoring signal.