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Mathematical Problems in Engineering
Volume 2017 (2017), Article ID 3012794, 13 pages
Research Article

Back Analysis of Geomechanical Parameters of Rock Masses Based on Seepage-Stress Coupled Analysis

School of Civil and Architecture Engineering, Xi’an Technological University, Xi’an 710032, China

Correspondence should be addressed to Dongyang Yuan

Received 8 October 2016; Revised 13 December 2016; Accepted 23 January 2017; Published 19 February 2017

Academic Editor: Roberto Fedele

Copyright © 2017 Xianghui Deng 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.


Given that rock masses are complex, the geomechanical parameters of rock masses are hard to determine in underground engineering. In this paper, the inverse model and method are established to identify the parameters based on the coupled stress and fluid flow model combined with the finite element method and adaptive genetic algorithm. Moreover, the model and method are applied in the Lianghekou highway tunnel, and the initial permeability coefficients of the stratum and the lateral pressure coefficients of the initial ground stress are identified by the back analysis with relative errors of the measured and fitted values at measuring points below 5%. Results show that the inverse model and method are effective and sound.