International Journal for Numerical and Analytical Methods in Geomechanics · 2014 · 20 citations · 22 references
EngineeringCivil EngineeringGeological EngineeringGeotechnical EngineeringRock MechanicsTunnel EngineeringBlast Damage AssessmentBlast DesignFracture MechanicsFracture PropagationTunnel BlastingUnderground BlastingBlast Damage PredictionBlast PressureBlast-induced DamageBlast-induced Stress WavesCrackingCracking SusceptibilityStress WavesTunnel Damage Assessment
SUMMARY Damage in the form of cracks is predicted to assess the susceptibility of a tunnel to failure due to a blast. The material‐point method is used in conjunction with a decohesive failure model as the basis for the numerical simulations. The assumption of a cylindrical charge as the source for the blast allows the restriction of plane strain and two‐dimensional analyses. In the simulation, a further restriction of a single pressure pulse is used as the source of stress waves that are reflected and refracted after reaching the free surface of the tunnel wall. Three critical zones of significant cracking in the vicinity of a tunnel are identified as potential contributors to tunnel failure. Copyright © 2014 John Wiley & Sons, Ltd.
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On the narrow dip structure at 1.9 GeV/c2 in diffractive photoproduction
P.L. Frabetti, H. W. K. Cheung, J. P. Cumalat et al. · Physics Letters B · 2003 · 187 citations · Full text