Pressuredistributionalongboreholewithaxialair-deckchargeblasting

YANG Guo-liang; YANG Ren-shu; JIANG Lin-lin

doi:10.11883/1001-1455(2012)06-0653-05

Volume 32 Issue 6

Apr. 2014

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YANG Guo-liang, YANG Ren-shu, JIANG Lin-lin. Pressuredistributionalongboreholewithaxialair-deckchargeblasting[J]. Explosion And Shock Waves, 2012, 32(6): 653-657. doi: 10.11883/1001-1455(2012)06-0653-05

Citation:

YANG Guo-liang, YANG Ren-shu, JIANG Lin-lin. Pressuredistributionalongboreholewithaxialair-deckchargeblasting[J]. Explosion And Shock Waves, 2012, 32(6): 653-657. doi: 10.11883/1001-1455(2012)06-0653-05

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Pressuredistributionalongboreholewithaxialair-deckchargeblasting

doi: 10.11883/1001-1455(2012)06-0653-05

1.
StateKeyLaboratoryofGeoMechanicsandDeepUndergroundEngineering,
2.
ChinaUniversityof MiningandTechnology,Beijing100083,China;

Funds:

NationalNaturalScienceFoundationofChina(51134025)

More Information

Corresponding author: YANG Guo-liang
Publish Date: 2012-11-25

Abstract

Abstract

Simulationswereperformedtoanalyzethepropagationandsuperpositionprocessesofstress wavesaimingtothreedifferentchargestructuresundertop,bottomandsimultaneousinitiations,respectively. Thepressureinthemiddleoftheboreholeincreasesgreatlywhenincreasingthetopcharge undertopandsimultaneousinitiations.Adoptingbottominitiation,thepressurepeaksofstemming partarehigherthanthoseadoptingtheothertwoinitiations.Forthreechargestructuresunderbottominitiation, comparisonsofthepressurecurvesalongtheboreholesdisplaythatmoreeven-distributedpressurecanbeobtainedandthecorrespondingmeanpressureishigherbyincreasingthetop charge.Thesimulatedresultswereappliedtothefieldpracticeandthebigfragmentsweredeletedbasically. Sotheganguebackfillefficiencycanincreasebyadoptingair-deckchargeblasting.
- mechanicsofexplosion,
- pressuredistribution,
- air-deckcharge,
- initiationtype