Stabilityanalysisofrectangularrockpillarsinfluenced

byvicinalblastingwithcatastrophetheory

YAN Chang-bin; WANG Quan-wei; LI Guo-quan; FU Xin-ge; ZUO Yu-jun

doi:10.11883/1001-1455(2010)05-0556-05

Volume 30 Issue 5

May 2014

Turn off MathJax

Article Contents

Article Navigation > Explosion And Shock Waves > 2010 > 30(5): 556-560

YAN Chang-bin, WANG Quan-wei, LI Guo-quan, FU Xin-ge, ZUO Yu-jun. Stabilityanalysisofrectangularrockpillarsinfluencedbyvicinalblastingwithcatastrophetheory[J]. Explosion And Shock Waves, 2010, 30(5): 556-560. doi: 10.11883/1001-1455(2010)05-0556-05

Citation:

YAN Chang-bin, WANG Quan-wei, LI Guo-quan, FU Xin-ge, ZUO Yu-jun. Stabilityanalysisofrectangularrockpillarsinfluenced byvicinalblastingwithcatastrophetheory[J]. Explosion And Shock Waves, 2010, 30(5): 556-560. doi: 10.11883/1001-1455(2010)05-0556-05

Citation:

PDF( 393 KB)

Stabilityanalysisofrectangularrockpillarsinfluenced byvicinalblastingwithcatastrophetheory

doi: 10.11883/1001-1455(2010)05-0556-05

1.
Yellow RiverEngineeringConsultingCo.Ltd.,Zhengzhou450003,Henan,China;
2.
ResearchCenterforNumericalTestof MaterialFailure,DalianUniversity,

Funds:

NationalNaturalScienceFoundationofChina(50490272)

tNationalKeyTechnologyRDProgram (2006BAB04A06)

More Information

Corresponding author: YAN Chang-bin
Publish Date: 2010-09-25

Abstract

Abstract

Byusingthecatastrophetheory,anonlineardynamicmodelwasproposedtodescribethe rectangularrockpillarinstabilityinducedbyvicinalblasting.Andsufficientandnecessaryconditions wereworkedoutforthepillardynamicinstability.Theproposedcatastrophemodelswereusedtoanalyzetheinfluencesoftheverticalpress, theblastingdisturbingstrengthanditsfrequencyontheinstabilitymechanismoftherectangularrockpillars. Resultsshowasfollows.Itisfeasibletoanalyze theinstabilitymechanismoftherectangularrockpillarsinducedbyvicinalblastingbyusingthecatastrophetheory. Thehigherthevicinalblastingdisturbingstrength,themoreeasilytherockpillarinstabilityoccurs. Theblastingdisturbingstrengthrespondingtotheinstabilityconditionsofrockpillarswillbelesswiththeincreasingoftheverticalpress, andtheinstabilityofrockpillarsbecomes morepossible.Ifthedynamicinstabilityofrockpillarshappens,theblastingdisturbingfrequency mustmeetcertainconditions.
- mechanicsofexplosion,
- stability,
- catastrophetheory,
- rectangularrockpillar,
- vicinal blasting