Effectoftunnelingblastingonanexistingadjacenttunnel

ZHONG Dong-wang; WU Liang; YU Gang

doi:10.11883/1001-1455(2010)05-0456-07

Volume 30 Issue 5

May 2014

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Article Navigation > Explosion And Shock Waves > 2010 > 30(5): 456-462

WU Hao, FANGQin, GONG Zi-ming. Semi-theoreticalanalysesforpenetrationdepthofrigidprojectileswithdifferentnosegeometriesintoconcrete(rock)target[J]. Explosion And Shock Waves, 2012, 32(6): 573-580. doi: 10.11883/1001-1455(2012)06-0573-08

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ZHONG Dong-wang, WU Liang, YU Gang. Effectoftunnelingblastingonanexistingadjacenttunnel[J]. Explosion And Shock Waves, 2010, 30(5): 456-462. doi: 10.11883/1001-1455(2010)05-0456-07

Citation:

ZHONG Dong-wang, WU Liang, YU Gang. Effectoftunnelingblastingonanexistingadjacenttunnel[J]. Explosion And Shock Waves, 2010, 30(5): 456-462. doi: 10.11883/1001-1455(2010)05-0456-07

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Effectoftunnelingblastingonanexistingadjacenttunnel

doi: 10.11883/1001-1455(2010)05-0456-07

1.
HubeiProvinceKeyLaboratoryofSystemsScienceinMetallurgicalProcess,WuhanUniversity

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NationalNaturalScienceFoundationofChina(50774056,51004079)

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Corresponding author: ZHONG Dong-wang
Publish Date: 2010-09-25

Abstract

Abstract

Basedonanactualtunnelexcavationproject,thethree-dimensionalfiniteelementmodelof tunnelexcavationwassetup,andtheparticlevibrationandstressdistributionwereanalyzedatthe existingadjacenttunnelconcretelining.Thecalculationresultshowsthatinthewholerangeofinvestigation, theverticalpeakparticlevibrationisbiggerthanthoseintheothertwodirections,butthe maintensilestressinthetunnelvaultcrownandbottomisinthehorizontaldirection,whichproves thattheverticalpeakparticlevibrationcannottotallyrepresentthestressstateofrock.Inactualprojects, theblastingpeakparticlevibrationshouldbecontrolled,andthestressstateofrockshouldbe analyzedaswell.Themaximumpeakparticlevibrationcalculatedis4.94cm/s,whichissmallerthan 5.00cm/srequiredinprojects;themaximumtensilestressinthetunnelvaultcrownis0.54MPa,so thetunnelconcretelineisnotaffected.
- mechanicsofexplosion,
- blastingvibration,
- blasting,
- tunnel

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