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Advances in Civil Engineering
Volume 2018, Article ID 5634109, 15 pages
https://doi.org/10.1155/2018/5634109
Research Article

Application of DICM on Similar Material Simulation Experiment for Rock-Like Materials

1Civil Engineering Department, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
2School of Civil, Environmental and Mining Engineering, The University of Adelaide, Adelaide, SA 5005, Australia

Correspondence should be addressed to Luzhen Wang; moc.621@5nehzulgnaw

Received 20 December 2017; Accepted 5 March 2018; Published 2 April 2018

Academic Editor: Yixian Wang

Copyright © 2018 Hailing Kong 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 digital image correlation method (DICM) has been applied to similar material simulation experiments for rock-like materials, to overcome the weakness of traditional measurements, for example, data discontinuous. In this paper, the movement and fracturing process of the overlying strata during excavation are observed and studied, and the distributions of stress, strain, and deformation in the overlying strata are obtained based on similar material simulation. The DICM is applied to improve the testing method and to optimize the discontinuity of testing points; of course, the difference of rock deformation in the overlying strata during excavation is considered. Full-field deformation and strain are analyzed by the DICM. To verify the accuracy of the DICM, results obtained from the DICM, numerical simulation and similar material simulation, are compared. The DICM can reflect the characteristics of locality and randomness of rock-like materials more real than numerical simulation, and comparing with similar material simulation, it can directly reproduce the movement and fracturing process of the overlying strata during full-field excavation. It shows that, the DICM is entirely feasible to using in the large scale full-field deformation measurement on complex rock structure, and it is of theoretical importance for testing for rock-like materials.