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Volume 31 Issue 1
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Article Navigation >  Explosion And Shock Waves  > 2011  >  31(1): 88-94
LIU Zhen-wen, XU Xiao-mei, QIN Liu-huai. Underwatersoundeffectsgeneratedbytunnel-explosionnearthecoastalharbor[J]. Explosion And Shock Waves, 2011, 31(1): 88-94. doi: 10.11883/1001-1455(2011)01-0088-07
Citation: LIU Zhen-wen, XU Xiao-mei, QIN Liu-huai. Underwatersoundeffectsgeneratedbytunnel-explosionnearthecoastalharbor[J]. Explosion And Shock Waves, 2011, 31(1): 88-94. doi: 10.11883/1001-1455(2011)01-0088-07
shu

Underwatersoundeffectsgeneratedbytunnel-explosionnearthecoastalharbor

doi: 10.11883/1001-1455(2011)01-0088-07
  • 1.

    KeyLaboratoryofUnderwaterAcousticCommunicationand MarineInformationTechnology

  • 2.

    oftheMinistryofEducation,CollegeofOceanographyandEnvironmentalScience,

  • Publish Date: 2011-01-25
    Abstract
  • Underwatersoundeffectsgeneratedbytunnel-explosionwerestudiedandanobservation wasperformedtomonitortheunderwatersoundpressureinPseudosciaenacroceasbreedingpond whenGuiyutunnelblastengineeringoccurredthithercoastalharborinLuoyuanCounty,FujianProvince. Basedonacoustictheoryoftransmissionandreflectiononsolid-fluidinterface,theresultsshow thatblastingseismicwave makesimpactonunderwaterenvironmentthroughtwokindsofsound transmittedpaths.Theunderwatersoundintensityincreasessharply(upto150dB)inbreedingpond whenGuiyutunnelblastengineeringoccurs,andtheincrementofsoundintensityisdirectlyproportionaltothemassofexplosivesaswellaswhichisinverselyproportionaltothedistancefro blasting point.However,theeffectofdistanceisgreaterthanthatofmass.Additionally,atdifferenttimeof lowtideandhightide,thesoundintensitygeneratedbyblastingseismicwaveinpondhasasignificant differenceduetothetwopathsofsoundpropagationindifferenttransmittedmedia.Withtheincrementofdistance, soundintensityatlowtidetimedeclinesmorequicklythanthatathightidetime. Similarly,thesoundenergydistributioninfrequencybandhasdifferentshape.Soundathightide timeisdominantinfrequencybandof200~1000Hz.Ontheotherhand,thefrequencyofsoundin pondatlowtidetimeismainlylessthan400Hz.Thegreaterofthewaterdepthaboveseabedis,the lowerofthecut-offlowfrequencyisforunderwateracousticwaveguideeffect.Consequently,thelow tidetimeforGuiyutunnelblastingshouldbechosensothatitcandecreasetheharmofhighintensity inPseudosciaenacroceasbreedingpond,avoidingtodoharmtopseudosciaenacroceasbodyinthe soundresonantfrequencyof500~800Hz.
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      沈阳化工大学材料科学与工程学院 沈阳 110142

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