EBSCO Logo
Connecting you to content on EBSCOhost
Results
Title

Three-Dimensional Numerical Analysis of Blast-Induced Damage Characteristics of the Intact and Jointed Rockmass.

Authors

Zhiliang Wang; Youpeng Huang; Feng Xiong

Abstract

This article reports numerical results investigating the damage evolution and spatial distribution characteristics of intact and jointed rockmass subjected to blast loading. The behaviors of rock material are described by the Holmquist- Johnson-Cook (HJC) constitutive model incorporated in the finite element software LS-DYNA. Results indicate that the damage distribution shows a reverse S-shape attenuation with the increase of the distance from borehole, and a better goodness of fit with the Logistic function is observed. In the single-hole blasting of jointed rockmass, there are two types of regions around the intersection of borehole and joint in which the damage degree is quite different. The crushing damage develops in a Ψ-shape path along the joint. In the radial direction, the crushing damage and cracking damage of rock show different distribution forms with the increase of joint dip angle. As for the double-hole blasting, due to the superposition of the blast waves, the damage degree in the region between the two boreholes of intact rockmass is significantly large. For jointed rockmass, the joint has local enhancement or inhibition effect on the blast damage in the region between the two boreholes.

Subjects

NUMERICAL analysis; BLAST effect; BLAST waves; ROCK concerts; GOODNESS-of-fit tests; ANSYS (Computer system)

Publication

Computers, Materials & Continua, 2019, Vol 60, Issue 3, p1189

ISSN

1546-2218

Publication type

Academic Journal

DOI

10.32604/cmc.2019.04972

EBSCO Connect | Privacy policy | Terms of use | Copyright | Manage my cookies
Journals | Subjects | Sitemap
© 2025 EBSCO Industries, Inc. All rights reserved