Abstract
A multivariable regression analysis of the in-situ stress field, which considers the non-linear deformation behavior of faults in practical projects, is presented based on a newly developed three-dimensional displacement discontinuity method (DDM) program. The Barton-Bandis model and the Kulhaway model are adopted as the normal and the tangential deformation model of faults, respectively, where the Mohr-Coulomb failure criterion is satisfied. In practical projects, the values of the mechanical parameters of rock and faults are restricted in a bounded range for in-situ test, and the optimal mechanical parameters are obtained from this range by a loop. Comparing with the traditional finite element method (FEM), the DDM regression results are more accurate.
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This work was financially supported by the Western Transport Technical Project of the Ministry of Transport, China (No. 2009318000046)
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Li, K., Wang, Yy. & Huang, Xc. DDM regression analysis of the in-situ stress field in a non-linear fault zone. Int J Miner Metall Mater 19, 567–573 (2012). https://doi.org/10.1007/s12613-012-0597-z
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DOI: https://doi.org/10.1007/s12613-012-0597-z