Mechanism and Treatment Technology of Three Water Inrush Events in the Jiaoxi River Tunnel in Shaanxi, China
Publication: Journal of Performance of Constructed Facilities
Volume 33, Issue 1
Abstract
Water inrush events in tunnels are geological hazards that pose a special engineering problem for tunnel construction in water-rich areas. To clarify the engineering background and hydrogeological conditions of water inrush in tunnels, this paper investigates and analyzes three incidents that occurred during the Jiaoxi River Tunnel Project. It analyzes the construction unit’s successful response to these events, presents their technical data, summarizes some practical high-value technology, and analyzes the mechanism of water inrush both qualitatively and quantitatively. It is found that the water source was the Jiaoxi River, and the water inrush channel was the concentrated leakage channel between the river and the tunnel. The prevention of water inrush is necessary for the excavation of tunnels that are prone to water inrush. In the event of a water inrush, plugging grouting is the most efficient water inrush treatment program. If grout plugging is to achieve better results, it must first fill the water inrush channel as completely as possible. Additionally, a distributary decompression holes—grouting posttreatment scheme is the improvement of the first two processing techniques, which deserves to be applied and popularized in practical projects.
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Acknowledgments
This study was financially supported by National Science Foundation for Distinguished Young Scholars of China (Nos. 51409208 and 51679197), the National Science Foundation for Post-doctoral Scientists of China (No. 2014M562524XB), Science and Technology Nova Plan of Xi’an University of Technology (No. 104/256091620), Xi’an University of Technology foundation (Nos. 104/256091630 and 104/461016090), and Shaanxi provincial key innovative research team (No. 2013KCT-15). The authors would like to express appreciation to the reviewers for their valuable comments and suggestions that helped to improve the quality of the paper.
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Published In
Journal of Performance of Constructed Facilities
Volume 33 • Issue 1 • February 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Dec 12, 2017
Accepted: Aug 3, 2018
Published online: Nov 26, 2018
Published in print: Feb 1, 2019
Discussion open until: Apr 26, 2019
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