RETRACTION


Retraction Notice: Dynamic Optimization Research on the Section Morphology of Large-span Tunnels in Shallow Rock Mass



Wang Hui1, 2, Wang Qing-biao1, *
1 Department of Resources and Civil Engineering, Shandong University of Science and Technology, Tai’an, Shandong, 271019, P.R. China
2 Geotechnical & Structural Engineering Research Center of Shandong University, Jinan, Shandong, 250061, P.R. China


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Creative Commons License
© 2017 Hui and Qing-biao

open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution-Non-Commercial 4.0 International Public License (CC BY-NC 4.0) (https://creativecommons.org/licenses/by-nc/4.0/legalcode), which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.

* Address correspondence to this author at the Department of Resources and Civil Engineering, Shandong University of Science and Technology, Tai’an, Shandong, 271019, P.R. China; Tel: 18805381111; E-mail: 1349725165@qq.com




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