摘要
微震事件被动监测技术和震源定位技术大大提高了人们对岩体破裂和断层活动的理解。针对某矿山微震事件频发、岩体垮落严重等问题,采用一种新的包含频域拟合和时域拟合的全波形矩张量反演路线,探寻适合该矿山三维监测网络下的微震事件矩张量反演方法,确保能够快速计算矿山微震事件的矩张量参数及断层面解,能够对矩张量进行快速分解并识别岩体的破裂类型。根据计算,该矿山在不同带通滤波器下反演所得的全波形矩张量分解出的双力偶断层面解是一致的,均以剪切为主。
Passive monitoring techniques and source localization techniques for micro-seismic events have greatly improved the understanding of rock mass rupture and fault activity.In light of frequent micro-seismic events and severe rock body caving in a mine,a new fully waveform moment tensor inversion route incorporating frequency-domain fitting and time-domain fitting is used to seek the suitable moment tensor inversion method for the three-dimensional monitor-ing network of this mine,which ensures that the moment tensor parameters and fault solutions of mine micro-seismic events can be rapidly calculated,and that the moment tensor can be quickly decomposed and the fracture types of rock mass can be identified.According to the calculations,the dual force even fault facet solutions from the full moment tensor decomposition obtained by the inversion under different filters are consistent and all of them are shear-dominated.
作者
简筝
马举
刘晓
勇国栋
Jian Zheng;Ma Ju;Liu Xiao;Yong Guodong(School of Resources and Safety Engineering,Central South University;Shandong Jinzhou Mining Group Co.,Ltd.)
出处
《黄金》
CAS
2022年第4期33-37,共5页
Gold
基金
国家自然科学基金面上项目(51774321)
国家自然科学基金青年项目(51904334)
湖南省自然科学基金青年项目(2021JJ40751)。
关键词
微震监测
全波形
矩张量
反演
剪切
micro-seismic monitoring
fully waveform
moment tensor
inversion
shear
