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Advances in Materials Science and Engineering
Volume 2017, Article ID 3503602, 11 pages
Research Article

Experimental Investigation of Laws during Deformation of Circular Roadway in 10° Inclined Layered Rock

1State Key Laboratory for Geomechanics & Deep Underground Engineering, Beijing 100083, China
2School of Mechanics and Civil Engineering, China University of Mining & Technology, Beijing 100083, China
3Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

Correspondence should be addressed to Xiaoming Sun; moc.361@btmucmxs

Received 4 October 2016; Revised 10 April 2017; Accepted 12 April 2017; Published 18 May 2017

Academic Editor: Carlo Santulli

Copyright © 2017 Xiaoming Sun 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.


In order to analyze the deformation characteristics and mechanisms caused by high tectonic stress in gentle dip strata, a physical modeling with circular tunnel was designed. The model was constructed by the so-called “Physically Finite Elemental Slab Assemblage (PFESA)” to bring about the structural effect of the deep strata. The gravity was fixed while the lateral pressure increased step by step to mimic high tectonic stress. In order to observe the displacement in different area, the sketches of monitoring points and frame in the model surface were drawn down through video pictures in different periods and to be compared. For the sake of analyzing the deformation and failure mechanism of layers, rock structural mechanics models were set up for the left side and right side in the same stratum, respectively. For verifying the experimental phenomenon and its mechanism, infrared images were utilized based on the temperature variation mechanisms of material. Through systematic study, this paper enriches the research methods of model test and can provide a certain reference for practical engineering of similar conditions.