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Karst geology and mitigation measures for hazards during metro system construction in Wuhan, China

Author

Listed:
  • Xiuling Wang

    (Chang’an University)

  • Jinxing Lai

    (Chang’an University)

  • Siyue He

    (Chang’an University)

  • Rodney Sheldon Garnes

    (University of the West Indies)

  • Yuwei Zhang

    (Xi’an University of Architecture and Technology)

Abstract

Karst geology is widely distributed in China; the great differences in natural conditions bring it an array of characteristics in different regions. There is a huge area of the buried karst in Wuhan, exhibiting a unique, but complicated engineering geological environment. This paper summarizes the geological conditions in Wuhan, with special focus on its karst geology. At present, a total of six karst belts have been detected, and they were divided into five structure types. For shield tunnelling in karst region, some problems such as water ingress or mud inrush, partial ground collapse, damage or failure of shield machine, and metro operation and management issues may be raised as a result of the activity of the karst geology. To prevent occurrence of possible hazards, a series of countermeasures suggested for hazard and risk mitigation were discussed in this paper. A case history, where the study section belongs to the Wuhan metro line 6, is referred to evaluate effectiveness of the adopted treatment measures. The feedbacks demonstrated that water ingress was successfully avoided, and ground deformation was effectively controlled in the study section throughout the construction phase. This study can provide significant reference information and experience for metro tunnel constructed in karst region.

Suggested Citation

  • Xiuling Wang & Jinxing Lai & Siyue He & Rodney Sheldon Garnes & Yuwei Zhang, 2020. "Karst geology and mitigation measures for hazards during metro system construction in Wuhan, China," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 103(3), pages 2905-2927, September.
    • Handle: RePEc:spr:nathaz:v:103:y:2020:i:3:d:10.1007_s11069-020-04108-3
    DOI: 10.1007/s11069-020-04108-3
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    References listed on IDEAS

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    1. Qing-Long Cui & Huai-Na Wu & Shui-Long Shen & Ye-Shuang Xu & Guan-Lin Ye, 2015. "Chinese karst geology and measures to prevent geohazards during shield tunnelling in karst region with caves," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 77(1), pages 129-152, May.
    2. Shangqu Sun & Liping Li & Jing Wang & Shaoshuai Shi & Shuguang Song & Zhongdong Fang & Xingzhi Ba & Hao Jin, 2018. "Karst Development Mechanism and Characteristics Based on Comprehensive Exploration along Jinan Metro, China," Sustainability, MDPI, vol. 10(10), pages 1-21, September.
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    Cited by:

    1. Enayatollah Emami Meybodi & Syed Khaliq Hussain, 2022. "The Karstic Geomorphology In The Dolomite Of Drinjal Formation In Central Iran (Case Study Saddat Sirize Iron Mine)," Earth Sciences Malaysia (ESMY), Zibeline International Publishing, vol. 6(1), pages 11-14, January.
    2. Peng Xie & Huchen Duan & Haijia Wen & Chao Yang & Shaokun Ma & Zurun Yue, 2022. "Study on a Quantitative Indicator for Surface Stability Evaluation of Limestone Strata with a Shallowly Buried Spherical Karst Cave," Mathematics, MDPI, vol. 10(12), pages 1-14, June.

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