地震地磁观测与研究2025，Vol.46Issue(5)：37-44,8.DOI:10.3969/j.issn.1003-3246.2025.05.005
基于煤矿地震监测专用站网的非天然地震特征分析
Analysis of anthropogenic earthquake characteristics based on a dedicated seismic monitoring network for coal mines
摘要
Abstract
Anthropogenic earthquake event data from the dedicated seismic monitoring network of Hongqinghe Coal Mine in Ordos,Nei Mongol were selected.Based on the Hilbert-Huang transform(HHT)method,observation stations were chosen in the order of epicentral distance from near to far,and the recorded data were decomposed in the time-frequency domain.The energy distribution in different frequency bands was statistically analyzed to explore the propagation law of frequency-domain energy distribution of anthropogenic seismic waves.The results indicate that the main energy distribution of anthropogenic earthquakes induced by coal mining in the Ordos area observed in the near-field is concentrated between 0-20 Hz,with a small amount of high-frequency energy distribution above 20 Hz,as the distance from the epicenter increases,high-frequency energy attenuates rapidly,the proportion of low-frequency energy to the total energy increases,and the proportion of high-frequency component energy to the total energy decreases.0-10 Hz energy accounts for more than 75%of the total energy,and the main shock frequency shifts to the low-frequency range.关键词
非天然地震/频域能量分布/希尔伯特—黄变换/煤矿地震监测专用站网Key words
anthropogenic earthquakes/frequency domain energy distribution/hilbert-huang transform/dedicated seismic monitoring network for coal mines引用本文复制引用
苏日亚,朱彦飞,秦续峰,王鑫,刘元康,王强,李维一..基于煤矿地震监测专用站网的非天然地震特征分析[J].地震地磁观测与研究,2025,46(5):37-44,8.基金项目
中国地震局2025年度监测预警任务(项目编号:CEA-JCYJ-202502003) （项目编号:CEA-JCYJ-202502003）
内蒙古自治区地震局科技服务项目(项目编号:GLMH2023050160) （项目编号:GLMH2023050160）
