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| The comprehensive remediation plan and construction technology of tunnel crossing underground river chamber in Karst area |
| CHEN Jian1, HUANG Ze1, XIE Yipeng2, YANG Junsheng2, PENG Yuyang2
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1. The Forth Engineering Co., Ltd., China Railway No.5 Group, Shaoguan 512031, Guangdong, China;
2. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China |
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Abstract To ensure the safety of tunnel construction and operation of the Yujingshan Tunnel of Chenggui Railway, the overall stability of the dark river cave system was evaluated and analyzed, and a comprehensive remediation plan of “dark river diversion-cave backfill-cave wall protection” was proposed. The results of the optimization test and the monitoring of the internal force of the protection structure were applied to the remediation process. The field construction practice showed that the above remediation could guide the Yujingshan Tunnel to traverse the giant dark river cavern safely and efficiently, and could provide experience reference for the design and construction of similar karst tunnels.
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Received: 03 January 2021
Published: 20 March 2021
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