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Journal of Spectroscopy
Volume 2014, Article ID 232178, 7 pages
http://dx.doi.org/10.1155/2014/232178
Research Article

Experimental Study of the Composition and Structure of Granular Media in the Shear Bands Based on the HHC-Granular Model

1Kunming University of Science and Technology, Kunming 650093, China
2Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
3State Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing University, Chongqing 400030, China

Received 9 June 2014; Accepted 25 July 2014; Published 31 August 2014

Academic Editor: Tifeng Jiao

Copyright © 2014 Guang-jin Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The researchers cannot control the composition and structure of coarse grained soil in the indoor experiment because the granular particles of different size have the characteristics of random distribution and no sorting. Therefore, on the basis of the laboratory tests with the coarse grained soil, the HHC-Granular model, which could simulate the no sorting and random distribution of different size particles in the coarse-grained soil, was developed by use of cellular automata method. Meanwhile, the triaxial numerical simulation experiments of coarse grained soil were finished with the different composition and structure soil, and the variation of shear strength was discussed. The results showed that the internal friction angle was likely to reduce with the increasing of gravel contents in the coarse-grained soil, but the mean internal friction angle significantly increased with the increment of gravel contents. It indicated that the gravel contents of shear bands were the major factor affecting the shear strength.