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

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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