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

Zhiliang Wang1,*, Youpeng Huang1, Feng Xiong1

School of Civil and Hydraulic Engineering, Hefei University of Technology, Hefei, 230009, China.

* Corresponding Author: Zhiliang Wang. Email: email.

Computers, Materials & Continua 2019, 60(3), 1189-1206. https://doi.org/10.32604/cmc.2019.04972

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.

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APA Style
Wang, Z., Huang, Y., Xiong, F. (2019). Three-dimensional numerical analysis of blast-induced damage characteristics of the intact and jointed rockmass. Computers, Materials & Continua, 60(3), 1189-1206. https://doi.org/10.32604/cmc.2019.04972
Vancouver Style
Wang Z, Huang Y, Xiong F. Three-dimensional numerical analysis of blast-induced damage characteristics of the intact and jointed rockmass. Comput Mater Contin. 2019;60(3):1189-1206 https://doi.org/10.32604/cmc.2019.04972
IEEE Style
Z. Wang, Y. Huang, and F. Xiong "Three-Dimensional Numerical Analysis of Blast-Induced Damage Characteristics of the Intact and Jointed Rockmass," Comput. Mater. Contin., vol. 60, no. 3, pp. 1189-1206. 2019. https://doi.org/10.32604/cmc.2019.04972

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cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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