Abstract
Tunnel construction is becoming necessary as cities continue to grow, particularly in crowded locations. Thus, the majority of tunneling projects include creating two parallel tunnels, which known as twin tunnels. The excavation action in a slope constitute a crucial issue due to threaten the stability of the slope during the excavation procedure. In this paper an optimized study has been proposed to obtain the best design for distributing the support system through a huge fill slope. Two main methodologies have been proposed to get the optimized design for the support system. The first one is by making a physical model. While, the second one is through the numerical simulation using Plaxis3D software package. Two main modified issues for the support system have been considered: the first is through modifying the dimensions of the support system. The second is through changing the distribution of the support system. However, according to the two proposed cases which are: the case study from Guizhou site and the optimized one, the results revealed that the settlement has been decreased after modifying the usage of the support system in the optimal case.
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Acknowledgements
This work was supported by the National Key R&D Program of China (Grant No. 581 2018YFC1504802), National Natural Science Foundation of China (Grant No.41972266).
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Suliman, L., Liu, X., Zhou, X. et al. Optimizing stability design of support system for the parallel tunnels excavation crossing a fill slope. Environ Earth Sci 83, 230 (2024). https://doi.org/10.1007/s12665-024-11520-6
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DOI: https://doi.org/10.1007/s12665-024-11520-6