Stress-seepage-damage coupling modelling method for tunnel in rich water region
ISSN: 0264-4401
Article publication date: 6 April 2020
Issue publication date: 31 August 2020
Abstract
Purpose
This paper aims at the problem of surrounding rock excavation damage zone of tunneling in the rich water region, this paper aims to propose a new seepage-stress-damage coupling model and studied the numerical algorithm. This reflects the characteristics of rock damage evolution, accompanied by plastic flow deformation and multi-field interaction.
Design/methodology/approach
First of all, rock elastoplastic damage constitutive model based on the Drucker–Prager criterion is established, the fully implicit return mapping algorithm is adopted to realize the numerical solution. Second, based on the relation between damage variation and permeability coefficient, the rock stress-seepage-damage model and multi-field coupling solving iterative method are presented. Finally, using the C++ language compiled the corresponding programs and simulated tunnel engineering in the rich water region.
Findings
Results show that difference evolution-based back analysis inversed damage parameters well, at the same time the established coupling model and calculating program have more advantages than general conventional methods. Multiple field coupling effects should be more considered for the design of tunnel support.
Originality/value
The proposed method provides an effective numerical simulation method for the construction of the tunnel and other geotechnical engineering involved underground water problems.
Keywords
Acknowledgements
This study was supported by the National Natural Science Foundation of China (No. 51678101), LiaoNing Revitalization Talents Program (No. XLYC1905015), Support Program for Innovative Talents in Liaoning University (No. LR2016028) and the Fundamental Research Funds for the Central Universities (No. 3132014326).
Citation
Jiang, A., Zheng, S. and Wang, S. (2020), "Stress-seepage-damage coupling modelling method for tunnel in rich water region", Engineering Computations, Vol. 37 No. 8, pp. 2659-2683. https://doi.org/10.1108/EC-10-2019-0465
Publisher
:Emerald Publishing Limited
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