爆破震动信号的能量分析方法及其应用研究(3)
发布时间:2021-06-08
发布时间:2021-06-08
爆破震动信号的能量分析方法
浙江大学硕士学位论文Abstract
Abstract
Withextensiveapplicationofblasttechniquesinallfieldsofnationaleconomy,moreand
alemoreattentions
havemadefocusedontheinfluenceofblastvibrationbyblasting.Manyresearcherstoinvestigationandexplorationintoit,however,due
onitsstrongrandomicity.fuzzinessanduncertainty,studythecontrolofblastvibrationdamageisstillinitsinfancy.
Aimedatthetheaforementionedproblems,alargeamountofconventionaldetonatorsdigitalelectronicdetonatorsblastingvibrationdatahave
packetsandbeencollected.Waveletandwaveletof
theanalysisandHHTanalysisweredeeplyandandsystematicallyinvestigatedindelaytimeidentificationasanalysiswellasenergydistributionsofblastingvirationsignals
controlofblastingvibration
summarizedasdamage.而emainresearchconclusionsoftheprojectalefollows:
Firstofall,theenergydistributionsofdigitalelectronicdetonatorsblastingvibration
bandwereobtainedbythewaveletsignalsindifferentfrequencyandwaveletpacketanalysis.
Digitalelectronicdetonatorsblastingvibrationsignalshadwidermainshockfrequencybands,higherfrequency,moresub-shockfrequencybandsandthedistributionofitsenergyinthebandsiSmorediffuse.
Secondly.therealdelaytimeispossiblydifferentfromthedesignedone.andmayinfluencetheeffect
delayerrorsofmillisecondblast.111erealtimeofdelayisalsoveryusefultoevaluatetheofdetonatorsandthereliabilityofinitiatingnetwork.nleinstantaneous
onenergyanalysisbasedHHTwasproposedtOidenti67thedelaytimeinmillisecondblasting.
onComparedwiththe
resolutiontime-energydensityanalysisbasedthewavelettransform。ithadhigherandbetterabilitytoidentifythepeaksinprocessedsignal.
electronicdetonatorsThirdly,digitalhadhilghprecisionandgoodreliability.Atthe
tOreasonabledelaytime,theblastingvibrationsignals
ofdamping.Itsblastingvibrationsuperimposedwitheachotherplayarolelowsignalshadlowpeakparticlevelocity,highfrequencyandenergy,anditcaneffectivelyreducetheeffectofblastingvibration.
wasproposed,and,aTIEcriterionFinally,thenotionofTotalMomentary.InputEnergy
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