山西地区爆破、塌陷（矿震）特殊地震动特征识别

摘要

对2004—2012年山西地震台网记录的山西地区 ML ≥2.5爆破、塌陷以及天然地震波形进行对比分析，结果显示：与天然地震相比，爆破、塌陷具有相对独特的震相特征，尤其是近距离的爆破、塌陷易于识别；远距离的则难以区分。在此基础上，对3种地震动波形进行频谱分析，结果显示：塌陷的优势频率较低，集中在1—3 Hz；爆破的优势频率较高，集中在1—6 Hz；地震的优势频率较宽，集中在0—20 Hz，为进一步甄别爆破、塌陷、天然地震提供了新的识别方法。%analyzed and summarized magnitude ML ≥ 2.5 explosion,collapse the special characteristics of seismic phases occurred in Shanxi Province in 2004—2012,and spectrum analyzed the non-natural earthquake explosion,collapse,different earthquakes showed that there is a big difference in the spectral characteristics and advantage frequency. Advantage frequency of collapse was lower,mainly concentrated from1 Hz to 3 Hz;Advantage frequency of explosion was higher,mainly concentrated from 1 Hz to 6 Hz;Advantage frequency of earthquake was wide mainly concentrated from 0 Hz to 20 Hz.