Prediction for Water Inrush Disaster Source and CFD-Based Design of Evacuation Routes in Karst Tunnel
Publication: International Journal of Geomechanics
Volume 22, Issue 5
Abstract
Tunnel construction in mountain areas, especially in karst regions, is challenging due to complex hydrogeological conditions in such regions, such as water inrush disaster induced by water-bearing structures that may jeopardize tunnel construction safety. To identify potential water inrush sources, this study first analyzed regional hydrogeological conditions of the Yuelongmen tunnel that cross under the river. Then, the tunnel-induced polarization method was employed to probe three-dimensional (3D) spatial location and distribution of water-rich areas. Based on detection results, numerical simulation was carried out to study the corresponding velocity and pressure for each probing line set in the numerical model, and flow characteristics after water inrush were summarized. Finally, optimized evacuation routes were designed to minimize the potential damage caused by the water inrush. Research results may provide critical implications for water inrush analysis and reduce casualties during tunneling in karst regions in China.
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Acknowledgments
This research was funded by the National Natural Science Foundation of China (Grant Nos. 51609129, 51709159, 51709160, and 51979154), the Key Research and Development Project of Shandong Province (Grant No. 2019GSF111018), the State Key Laboratory for Mine Disaster Prevention and Control, cultivation base co-built by the province and the Ministry of Shandong University of Science and Technology (Grant No. MDPC201707), and Open Fund of State Key Laboratory of Water Resource Protection and Utilization in Coal Mining (KFJJ2018089).
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International Journal of Geomechanics
Volume 22 • Issue 5 • May 2022
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© 2022 American Society of Civil Engineers.
History
Received: May 29, 2020
Accepted: Nov 11, 2021
Published online: Feb 21, 2022
Published in print: May 1, 2022
Discussion open until: Jul 21, 2022
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