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摘要: 综合运用小波分析和独立分量分析对实测的2孔微差爆破振动试验信号进行分离研究。采用小 波分析分解滤去爆破振动信号能量比低的高频部分,提取主要特征所在的频段的重构信号,然后运用独立分 量分析(independentcomponentanalysis,ICA)对其重构信号进行分离,初步成功获得了体现现场实际情况的 分段震波,确定了分段震波的实际微差间隔时间。Abstract: Waveletanalysisandindependentcomponentanalysis(ICA)wereintegrallyappliedtoinvestigatetheseparationofthemeasuredshort- delayblastingvibrationsignalsintwodrillingholes. Waveletanalysiswasusedtofilteroutthehigh-frequencysignalwithalowerenergyratiointheblastingvibrationsignalsandtoextractthereconstructedsignalsinthefrequencyrangwiththem infeatures. ThereconstructedsignalswereseparatedusingICA.Thesegmentalseismicwavesweresuccessfullyobtained, whichcouldreflectthepracticalsituation.Andtheactualshort-delayintervaltime ofthesegmentalseismicwaveswasdetermined.ItisindicatedthatICAishelpfulforblastingvibrationsignalprocessing.
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Key words:
- mechanicsofexplosion /
- ICA /
- milliseconddelayfiring /
- vibrationsignal /
- waveletanalysis
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