Anequivalentsimulationmethodforblastingvibrationofsurroundingrock

YANG Jian-hua; LU Wen-bo; CHEN Ming; ZHOU Chuang-bing

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

Volume 32 Issue 2

May 2014

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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

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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)

More Information

Corresponding author: LU Wen-bo
Publish Date: 2012-03-25

Abstract

Abstract

Toovercomethedifficultiesinsimulatingaccuratelytheblastingvibrationofsurrounding rock,anequivalentsimulationmethodwaspresented.Theequivalentelasticboundarysubjectedto theblastingloadwasdevelopedformultipleboreholesaccordingtothespatialcharacterofrockdamagearoundboreholes. Blastingloadsontheequivalentboundaryvaryingalongtheboreholeaxiswas calculatedtheoreticallythroughanalyzingtheexpansionofboreholevolume,thedevelopmentof cracks,themovementofstemmingandtheoutburstofdetonationgases.Combinedwiththeblasting excavationoftheNo.1tailracetunnelinPubugouHydropowerStation,particlevibrationvelocitiesin thesurroundingrockweresimulatedbyemployingthisequivalentmethodbasedonthedynamicfinite elementmethod.Thecomparisonbetweenthesimulationresultsandthemonitoringdataindicates thatthisequivalentsimulationmethodisapplicabletocalculatingtheresponseofsurroundingrock duringblastingexcavation;andthattheselectionofmechanicalparametersoftherockneartheequivalentelasticboundaryhasasignificantimpactoncalculationresults.
- mechanicsofexplosion,
- equivalentsimulationmethod