Numerical Simulation Research on the Stress Response of the Bent Rockbolt with the Shear Displacement of Rock Mass

DOI

10.2991/masta-19.2019.50How to use a DOI?

Keywords

The bent rockbolt, Shear deformation, Mechanical properties

Abstract

More and more attentions have been paid to the problem of the shear failure in the conventional straight rockbolt support for underground excavations. Different bolting innovations have been tried over the years. The bent rockbolt with promise is a new mean of rock support. Through numerical simulation software, the shear characteristics of the bent rockbolt is analyzed. Three-dimensional numerical models of the bent rockbolt and the straight rockbolt are established. both of which are subjected to a shear displacement of rock mass. Their stress and deformation characteristics results show that stress concentration easily occurs at the intersection point of anchored portion and non-anchored portion along the bolt. In the case of the mises equivalent stress, the bent rockbolt has a smaller one than the straight rockbolt under the same shear displacement of rock mass. So the bent rockbolt is not easy to be damaged and can better adapte to the shear damage of rock mass.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ze-yang Guo
AU  - Bin Wang
AU  - Yong Ning
AU  - Shi-kai Liang
PY  - 2019/07
DA  - 2019/07
TI  - Numerical Simulation Research on the Stress Response of the Bent Rockbolt with the Shear Displacement of Rock Mass
BT  - Proceedings of the 2019 International Conference on Modeling, Analysis, Simulation Technologies and Applications (MASTA 2019)
PB  - Atlantis Press
SP  - 300
EP  - 304
SN  - 1951-6851
UR  - https://doi.org/10.2991/masta-19.2019.50
DO  - 10.2991/masta-19.2019.50
ID  - Guo2019/07
ER  -