Blast‐induced rock fracture near a tunnel
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- May 09, 2014
- Source ID
- 10.1002/nag.2294
Entities
People
- Deborah Sulsky
- Howard Schreyer
- Ling Xu
Organizations
- Defense Threat Reduction Agency
- Georgia State University
- University of New Mexico