Repairing Damaged Tunnel Lining with Small-Size Cavity in Surrounding Rocks
Publication: Journal of Performance of Constructed Facilities
Volume 35, Issue 4
Abstract
This paper presents a case study of local repair to damaged concrete lining in an operational tunnel, in which a local repairing countermeasure is proposed and adopted in practical implementation. The countermeasure consisted of grouting cavities with cement slurry and installing a ribbed ring reinforcement in the damaged part of the concrete lining. The field investigation and numerical analysis demonstrate the concrete lining damage is primarily induced by the field-observed construction deficiency of small-size cavities around surrounding rocks. The implemented treatment work demonstrates that the employed countermeasure is capable of local repair of the damaged concrete lining induced by the aforementioned construction deficiency of small-size cavities around surrounding rocks, which can provide the design basis for similar treatment work.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
The authors would like to acknowledge the support from Open Fund of Key Laboratory of New Technology for Construction of Cities in Mountain Area of the Ministry of Education (No. LNTCCMA-20200105), Open Research Fund of Key Laboratory of Safety and Risk Management on Transport Infrastructures (Ministry of Transport, PRC), National Natural Science Foundation of China (Nos. 51508278 and 51508292), the Six Talent Peak Projects, and the Qinglan Project.
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Published In
Journal of Performance of Constructed Facilities
Volume 35 • Issue 4 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Apr 19, 2020
Accepted: Feb 8, 2021
Published online: Apr 29, 2021
Published in print: Aug 1, 2021
Discussion open until: Sep 29, 2021
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