2022
DOI: 10.21203/rs.3.rs-1210915/v1
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Study on Collapse Mechanism and Treatment Measures of Portal Slope of a High-speed Railway Tunnel

Abstract: The slope of an open cut tunnel is located above the exit of the Leijia tunnel on the Changgan high-speed railway. During the excavation of the open cut tunnel foundation pit, the slope slipped twice, a large landslide of 92500 m³ formed. The landslide body and unstable slope body not only caused the foundation pit of the open cut tunnel to be buried and the anchor piles to be damaged but also directly threatened the operational safety of the later high-speed railway. Therefore, to study the stability change i… Show more

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