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- Title
Ground fissure disasters and mitigation measures for hazards during metro system construction in Xi'an, China.
- Authors
Li, Ziqi; Lai, Jinxing; Li, Yao; Qiu, Junling; Shi, Yufeng; Li, Binglong; Fan, Feifei
- Abstract
There are 14 ground fissures covering the municipal area of Xi'an, which have brought great difficulties to the construction of metro tunnel. When a tunnel is constructed in a region with ground fissures, problems (such as cracking or shearing failure of tunnel lining, groundwater seepage, failure of shield machine, and track deformation in metro) may be encountered due to the activity of ground fissure. To mitigate such risks, this paper proposes a series of engineering countermeasures. A case history, where the study section belongs to the Xi'an Metro Line 1, is referred to evaluate effectiveness of the adopted treatment measures. The feedbacks demonstrated that the problems of structural deformation and water seepage can be avoided, and ground settlement caused by ground fissure was effectively controlled. And to improve the efficiency of tunnel construction, a shield tunnel construction scheme is proposed. This study can provide significant reference and experience for constructing metro tunnel in ground fissure development areas.
- Publication
Arabian Journal of Geosciences, 2022, Vol 15, Issue 1, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-021-08466-5