Distinct element analysis for Class II behavior of rocks under uniaxial compression

被引：43

作者：

Shimizu, Hiroyuki ^{[1
]}

Koyama, Tomofumi ^{[2
]}

Ishida, Tsuyoshi ^{[1
]}

Chijimatsu, Masakazu ^{[3
]}

Fujita, Tomoo ^{[4
]}

Nakama, Shigeo ^{[4
]}

机构：

[1] Kyoto Univ, Dept Civil & Earth Resources Engn, Nishikyo Ku, Kyoto 6158540, Japan

[2] Kyoto Univ, Dept Urban & Environm Engn, Kyoto 6158540, Japan

[3] Hazama Corp, Tokyo, Japan

[4] JAEA, Naka, Ibaraki, Japan

来源：

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES | 2010年 / 47卷 / 02期

关键词：

Uniaxial compression test; Class II behavior; Radial strain control; Distinct element method (DEM); Particle mechanics approaches; LINEAR COMBINATION; MODEL; STRAIN; FAILURE; STRESS; SIZE;

D O I：

10.1016/j.ijrmms.2009.09.012

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

In this study, the radial strain control method for uniaxial compression tests was introduced in the distinct element method (DEM) codes and the Class II behavior of rocks was simulated. The microscopic parameters used in the DEM models were determined based on laboratory uniaxial compression tests and Brazilian tests carried at Aspo Hard Rock Laboratory, Sweden. The numerical simulation results show good agreement with the complete stress-strain curves for Class II obtained from the laboratory experiments. These results suggest that the DEM can reproduce the Class II behavior of the rock successfully. The mechanism of the Class II behavior was also discussed in detail from the microscopic point of view. The loading condition and microscopic structure of rocks will play an important role for the Class II behavior. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：323 / 333

页数：11

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