大地测量与地球动力学2026，Vol.46Issue(1)：78-85,8.DOI:10.14075/j.jgg.2025.01.002
远程浅层爆破震源的微震信号频谱能量消散衰减规律研究
Attenuation Laws of Spectral Energy Dissipation in Microseismic Signals from Remote Shallow Blasting Sources
摘要
Abstract
Based on the seismic monitoring data from the Ganzhou Earthquake Monitoring Center Sta-tion of the Jiangxi Seismological Agency,real-time monitoring of blasting vibrations from different lo-cations and explosive quantities at the Ganzhou Tieshanlong Tungsten Mine was conducted from mul-tiple directions and long distances.The microseismic signals generated by blasting were obtained and analyzed to identify the propagation patterns of blasting vibration signals in medium and far blasting zones.Considering the influence of complex environmental conditions on blasting vibration signals,a Butterworth filter was used to eliminate trend components,and a combination of wavelet denoising and HHT denoising was applied to analyze the time-frequency characteristics,frequency band energy characteristics,and the impact of terrestrial environment on the spectral energy propagation of micro-seismic signals under different monitoring base stations and different blasting events.The study shows that the Sadovsky empirical formula is still applicable to the propagation patterns of blasting vibration signals in the medium and far blasting zones(32-120 km),where:1)in the medium and far blasting zones,signal energy is highly concentrated in the low-frequency band and shifts downward with in-creasing distance from the blast center(R);2)when the distance from the blast center is fixed,sig-nal energy increases significantly with the increase in explosive quantity(Q),and the concentrated frequency band fluctuates within a normal range;3)the attenuation of blasting vibration signals is al-so affected by the surface environment along the propagation path.关键词
爆破振动/时频分析/能量分布/地表影响Key words
blasting vibration/time-frequency analysis/energy distribution/surface effects分类
天文与地球科学引用本文复制引用
谢斌,续伟,肖孟仁,冯亮..远程浅层爆破震源的微震信号频谱能量消散衰减规律研究[J].大地测量与地球动力学,2026,46(1):78-85,8.基金项目
国家自然科学基金(4210071309) （4210071309）
江西省自然科学基金(20224BAB203040) （20224BAB203040）
中国地震局"三结合"课题(3JH-202401050) （3JH-202401050）
江西省地震局"2111"孵化基金(FD2111-202404). （FD2111-202404）
