A finite element perturbation method for the prediction of rockburst

被引：51
|
作者：
Sharan, S. K. [1 ]
机构：
[1] Laurentian Univ, Sch Engn, Sudbury, ON P3E 2C6, Canada
来源：
COMPUTERS & STRUCTURES | 2007年 / 85卷 / 17-18期
基金：
加拿大自然科学与工程研究理事会;
关键词：
rockburst; finite element method; instability; brittle plasticity; underground openings; infinite media;
D O I：
10.1016/j.compstruc.2006.08.084
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A finite element model is proposed to predict the potential occurrence of rockburst in underground openings. It is assumed that rockburst results due to instability of rock mass and the analysis is based on a perturbation technique. The rock mass is considered to be elastic-brittle-plastic. A novel method of elastic supports is used to simulate the effects of unbounded rock mass. Mohr-Coulomb and Hock-Brown failure criteria are used and both associated and non-associated plasticity are considered. The effectiveness and efficiency of the proposed numerical technique are demonstrated by comparing finite element results with analytical solutions for 'deep' circular openings in rock mass subject to hydrostatic in situ stress. Analyses of example problems are presented to demonstrate the potential occurrence of rockburst predicted by using the proposed model. (c) 2006 Civil-Comp Ltd. and Elsevier Ltd. All rights reserved.
引用
收藏
页码：1304 / 1309
页数：6
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