Abstract
Fractures have a dominant effect on the mechanical response of a rock mass subjected to mining operations. A numerical finite element model describing the anisotropic property of elasticity and seepage was used in this study to assess the drift spacing at the Heishan metal mine in Hebei Province, China. The fractured rock mass is assumed to be transversely isotropic, and the influence of joint orientation on the anisotropic properties of elasticity of the surrounding rock mass around roadways was investigated. The associated stress field and fracture pattern of the surrounding rock mass were also numerically studied. The results indicate that the existence of joint planes greatly affects the stress field and fracture patterns, and the principal direction of joints can control the failure pattern of the surrounding rock mass around drifts.
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Acknowledgments
This study was performed at Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mine, Northeastern University, Shenyang, China. The work presented in this study was financially supported by the National Basic Research Program of China (Grant No. 2013CB227902). The Natural Science Foundation of China (Grant No. 51174045, 51034001, 41172265, 51474051) and the specialized research fund for the Doctoral Program of Higher Education of China (Grant No. 20120042120053) also give financial supports to this research.
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Yang, T., Wang, P., Liu, H. et al. Deformational behavior of underground opening using a stress-seepage coupled model considering anisotropic characteristics. Arab J Geosci 8, 6635–6642 (2015). https://doi.org/10.1007/s12517-014-1723-1
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DOI: https://doi.org/10.1007/s12517-014-1723-1