Influence of homogeneity of rock material on rockburst based on numerical analysis

Author

Cheng, Cheng

Author_Institution

Key Lab. for Geomech. & Deep Underground Eng., China Univ. of Min. & Technol., Beijing, China

fYear

2011

fDate

15-17 July 2011

Firstpage

2241

Lastpage

2244

Abstract

Rockburst is a type of violent failure in underground rock engineering. Where a rockburst may happen and whether it will happen not only depend on the stress condition but also are related to the system stiffness. Homogeneity of the rock material is just a factor may affect the system stiffness. Based on numerical analysis, this paper compared the different failure modes, AE counts, AE energy and released energy supplied by the loading system during the rockburst tests on three RFPA models with different homogeneity indices. The results confirm that homogeneity index has influence on the occurrence of rockbust, and the violent fialure is more prone to occur on the more homogeneous rock samples.

Keywords

geotechnical engineering; mechanical testing; numerical analysis; rocks; RFPA model; homogeneity index; homogeneity indices; homogeneous rock samples; numerical analysis; rock material; rockburst test; stress condition; underground rock engineering; violent failure; Load modeling; Loading; Materials; Numerical analysis; Rocks; Strain; Stress; homogeneity; numerical analysis; rockburst; system stiffness;

fLanguage

English

Publisher

ieee

Conference_Titel

Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on

Conference_Location

Hohhot

Print_ISBN

978-1-4244-9436-1

Type

conf

DOI

10.1109/MACE.2011.5987425

Filename

5987425