Version 1
: Received: 12 July 2024 / Approved: 15 July 2024 / Online: 15 July 2024 (07:51:58 CEST)
How to cite:
Yang, Z.; Li, Y.; Xu, J. Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions. Preprints2024, 2024071133. https://doi.org/10.20944/preprints202407.1133.v1
Yang, Z.; Li, Y.; Xu, J. Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions. Preprints 2024, 2024071133. https://doi.org/10.20944/preprints202407.1133.v1
Yang, Z.; Li, Y.; Xu, J. Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions. Preprints2024, 2024071133. https://doi.org/10.20944/preprints202407.1133.v1
APA Style
Yang, Z., Li, Y., & Xu, J. (2024). Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions. Preprints. https://doi.org/10.20944/preprints202407.1133.v1
Chicago/Turabian Style
Yang, Z., Yongxin Li and Jingshu Xu. 2024 "Upper Bound Limit Analysis of Deep Tunnel Face Support Pressure with Nonlinear Failure Criterion under Pore Water Conditions" Preprints. https://doi.org/10.20944/preprints202407.1133.v1
Abstract
Based on the nonlinear failure criterion and modified tangential technique, the upper bound solutions of supporting pressure on the deep tunnel face were obtained under pore water pressure conditions. The influence of parameters on the supporting pressure and collapse range was investigated according to the unlimited block failure mechanism. It is found that the upper bound solutions of supporting pressure increase with the growth of the nonlinear coefficient and pore water pressure coefficient. The collapse range of the tunnel face scales out with the increase of the nonlinear coefficient and shrinks when increasing the pore water pressure coefficient. Moreover, with the increase of the nonlinear coefficient, the impact strength on supporting pressure and collapse range declines gradually. According to the calculating results, it is manifest that both the pore water pressure and nonlinear criterion factors have negative impacts on the stability of the tunnel face. Thus, more attention should be paid to these parameters to ensure face stability in deep tunnel construction.
Keywords
deep tunnel face; pore water pressure; nonlinear failure criterion; upper bound theorem; failure mechanism; numerical simulation
Subject
Engineering, Civil Engineering
Copyright:
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.
