Aninvestigationintoattenuationofunderwatershockwave

byairinterlayer

JIA Hu; SHEN Zhao-wu

doi:10.11883/1001-1455(2012)01-0061-06

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JIA Hu, SHEN Zhao-wu. Aninvestigationintoattenuationofunderwatershockwavebyairinterlayer[J]. Explosion And Shock Waves, 2012, 32(1): 61-66. doi: 10.11883/1001-1455(2012)01-0061-06

Citation:

JIA Hu, SHEN Zhao-wu. Aninvestigationintoattenuationofunderwatershockwave byairinterlayer[J]. Explosion And Shock Waves, 2012, 32(1): 61-66. doi: 10.11883/1001-1455(2012)01-0061-06

JIA Hu, SHEN Zhao-wu. Aninvestigationintoattenuationofunderwatershockwavebyairinterlayer[J]. Explosion And Shock Waves, 2012, 32(1): 61-66. doi: 10.11883/1001-1455(2012)01-0061-06

Citation:

JIA Hu, SHEN Zhao-wu. Aninvestigationintoattenuationofunderwatershockwave byairinterlayer[J]. Explosion And Shock Waves, 2012, 32(1): 61-66. doi: 10.11883/1001-1455(2012)01-0061-06

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Aninvestigationintoattenuationofunderwatershockwave byairinterlayer

doi: 10.11883/1001-1455(2012)01-0061-06

1.
SchoolofCivilEngineeringandArchitecture,NanyangNormalUniversity,
2.
Nanyang473061,Henan,China;

Funds:

ChinaPostdoctoralScienceFoundation(201003799)

More Information

Corresponding author: JIA Hu
Publish Date: 2012-01-25

Abstract

Abstract

Basedonthewavetheory,thispaperputsforwardthedesignprinciplesoftheprotectionagainstunderwaterexplosionshockwave. Besides,inlightoftheactualsituationofsafetyprotectionin underwaterblastingpractices,experimentalstudiesarecarriedouttotestthehypothesesregarding theattenuationofunderwatershockwavebytheairinterlayer.Itisfoundthattheairinterlayercan effectivelyattenuatetheshockwavepeakpressure.Inordertostudytheenergydistributioncharacteristicsoftheattenuationofunderwatershockwavebytheairinterlayer, thepaperproposesawayof approachingtheenergydistributionofunderwaterexplosionshockwavesfromwaveletanalysis.Given thattheenergydistributionofunderwaterexplosionshockwavesiswidelyrangedinfrequency,the paperfindsoutthatundertheimpactoftheairinterlayer,theshockwaveenergyineachfrequency rangehasdesirableattenuatingcapability,andthattheattenuatedshockwaveenergyinthemajorityof frequencyrangescanamountto50%oftheoriginal.Theresearchresultsshowthat,theairinterlayer playsapositiveroleinstrengtheningthesafetyprotectioninunderwaterblastingandeffectivelyreducethedestructiveeffectsofunderwatere plosionshockwaves,andhencehasapracticalvalue.
- mechanicsofexplosion,
- energydistribution,
- waveletanalysis,
- airinterlayer,
- underwater explosion