Asimulation-basedexperimentalstudyonexplosionstresswavepropagation

andattenuationincoa

CHU Huai-bao; YANG Xiao-lin; HOU Ai-jun; YU Yong-qiang; LIANG Wei-min

doi:10.11883/1001-1455(2012)02-0185-05

Volume 32 Issue 2

May 2014

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Article Navigation > Explosion And Shock Waves > 2012 > 32(2): 185-189

CHU Huai-bao, YANG Xiao-lin, HOU Ai-jun, YU Yong-qiang, LIANG Wei-min. Asimulation-basedexperimentalstudyonexplosionstresswavepropagationandattenuationincoa[J]. Explosion And Shock Waves, 2012, 32(2): 185-189. doi: 10.11883/1001-1455(2012)02-0185-05

Citation:

CHU Huai-bao, YANG Xiao-lin, HOU Ai-jun, YU Yong-qiang, LIANG Wei-min. Asimulation-basedexperimentalstudyonexplosionstresswavepropagation andattenuationincoa[J]. Explosion And Shock Waves, 2012, 32(2): 185-189. doi: 10.11883/1001-1455(2012)02-0185-05

Citation:

CHU Huai-bao, YANG Xiao-lin, HOU Ai-jun, YU Yong-qiang, LIANG Wei-min. Asimulation-basedexperimentalstudyonexplosionstresswavepropagation andattenuationincoa[J]. Explosion And Shock Waves, 2012, 32(2): 185-189. doi: 10.11883/1001-1455(2012)02-0185-05

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Asimulation-basedexperimentalstudyonexplosionstresswavepropagation andattenuationincoa

doi: 10.11883/1001-1455(2012)02-0185-05

1.
CollegeofCivilEngineering,HenanPolytechnicUniversity,
2.
Jiaozuo 454000,Henan,China;

Funds:

NationalNaturalScienceFoundationofChina(50874039)

More Information

Corresponding author: CHU Huai-bao
Publish Date: 2012-03-25

Abstract

Abstract

Basedonthetheoryofrockblasting,theactionmechanismofexplosionstresswaveincoal wasanalyzed.Thedamagefracturecriteriaforcoalsubjectedtoexplosionstresswavewasexplored accordingtothedamagemechanicstheory.And,simulationexperimentswereconductedtoobtainthe attenuationlawofexplosionstresswavepropagationincoal.Theexperimentalresultsshowthatthe stresswaveateachmeasuredpointcontainstwoormorewaveforms,therearecompressionphaseand tensilephaseinthefirstwave,thewaveformofwhichissimpleandsmooth,andthesecondwaveis theresultofavarietyofaction,thewaveformofwhichiscomplex;thatthecoalmediaisfirstunder compressivestressandthenundertensilestress,theactiontimeofthecompressivestresswasshorter thanthatofthetensilestress;andthatthedecayrateofexplosionstresswaveincoalisfasterthanin generalrock.Themaineffectsofexplosionstresswaveincoalconsistofformingasmallnumberof newcrannies,activatingthenativecranny,andbreakingthebalanceofcoalgas.
- mechanicsofexplosion,
- propagationandattenuation