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Volume 32 Issue 2
May  2014
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Article Navigation >  Explosion And Shock Waves  > 2012  >  32(2): 157-163
YANG Jian-hua, LU Wen-bo, CHEN Ming, ZHOU Chuang-bing. Anequivalentsimulationmethodforblastingvibrationofsurroundingrock[J]. Explosion And Shock Waves, 2012, 32(2): 157-163. doi: 10.11883/1001-1455(2012)02-0157-07
Citation: YANG Jian-hua, LU Wen-bo, CHEN Ming, ZHOU Chuang-bing. Anequivalentsimulationmethodforblastingvibrationofsurroundingrock[J]. Explosion And Shock Waves, 2012, 32(2): 157-163. doi: 10.11883/1001-1455(2012)02-0157-07
shu

Anequivalentsimulationmethodforblastingvibrationofsurroundingrock

doi: 10.11883/1001-1455(2012)02-0157-07
  • 1.

    StateKeyLaboratoryof WaterResourcesand HydropowerEngineeringScience,

  • 2.

    WuhanUniversity,Wuhan 430072,Hubei,China;

Funds:

NationalNaturalScienceFoundationofChina(50779050,50909077)

theNationalBasicResearchProgramofChina(973Program)(2010CB732003)

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  • Corresponding author: LU Wen-bo
  • Publish Date: 2012-03-25
    Abstract
  • Toovercomethedifficultiesinsimulatingaccuratelytheblastingvibrationofsurrounding rock,anequivalentsimulationmethodwaspresented.Theequivalentelasticboundarysubjectedto theblastingloadwasdevelopedformultipleboreholesaccordingtothespatialcharacterofrockdamagearoundboreholes. Blastingloadsontheequivalentboundaryvaryingalongtheboreholeaxiswas calculatedtheoreticallythroughanalyzingtheexpansionofboreholevolume,thedevelopmentof cracks,themovementofstemmingandtheoutburstofdetonationgases.Combinedwiththeblasting excavationoftheNo.1tailracetunnelinPubugouHydropowerStation,particlevibrationvelocitiesin thesurroundingrockweresimulatedbyemployingthisequivalentmethodbasedonthedynamicfinite elementmethod.Thecomparisonbetweenthesimulationresultsandthemonitoringdataindicates thatthisequivalentsimulationmethodisapplicabletocalculatingtheresponseofsurroundingrock duringblastingexcavation;andthattheselectionofmechanicalparametersoftherockneartheequivalentelasticboundaryhasasignificantimpactoncalculationresults.
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