Analysis and Discussion on Subway Construction Accidents from Geological Perspective

Yuanjian Lin (The State Key Laboratory for GeoMechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China School of Science, Nanchang Institute of Science and Technology, Nanchang 330108, China)
Jiangfeng Liu (The State Key Laboratory for GeoMechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)
Ronghao Lv (The State Key Laboratory for GeoMechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)
Chenyi Sun (The State Key Laboratory for GeoMechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)
Zhendong Fan (The State Key Laboratory for GeoMechanics and Deep Underground Engineering, and School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221116, China)

Abstract


Several cave-in accidents often occur in subway construction, causing personnel and economic losses. This paper has carried on the statistics and analysis of some typical subway construction accidents in recent years. Taking the collapse accident of a subway station in Hangzhou as the engineering background, the causes of the collapse of the foundation pit were analyzed. The analysis found that groundwater, earthwork over-excavation, weak support design and inadequate monitoring are the main reasons. These factors should be highlighted in the construction of similar projects in the future to avoid similar tragedies.


Keywords


Subway station; Foundation pit, Collapse; Earthwork excavation

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References


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DOI: https://doi.org/10.30564/jgr.v1i2.1249

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