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Erschienen in:

01.06.2024 | Review Paper

Analysis of loess water migration regularity and failure response of tunnel structure under rainfall environment

verfasst von: Kunjie Tang, Dedi Liu, Shaohua Xie, Junling Qiu, Jinxing Lai, Tong Liu, Yong Fang

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 6/2024

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Abstract

The potential collapsible deformation of loess surrounding rock is not conducive to the safety and stability of the tunnel, especially under rainfall conditions, which may induce severe engineering disasters. This paper analyzes the regularity of water infiltration in loess and failure response of tunnel structure under rainfall conditions. Rainfall infiltration in loess strata includes unsaturated infiltration and dominant channel infiltration. The dominant channels enhance soil permeability, leading to the overall downward movement of the wetting front, which provides conditions for the instability and failure of surrounding rock of loess tunnel. Through case statistics, the loess tunnel engineering disasters caused by rainfall are analyzed, elucidating the mechanism of tunnel instability and failure. Finally, according to the characteristics of loess surrounding rock and the response regularity of rainfall to tunnel structure, a series of engineering measures to prevent the deformation of surrounding rock and the specific construction method of loess tunnel structure safety warning system under the condition of rainfall are proposed.

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Metadaten
Titel
Analysis of loess water migration regularity and failure response of tunnel structure under rainfall environment
verfasst von
Kunjie Tang
Dedi Liu
Shaohua Xie
Junling Qiu
Jinxing Lai
Tong Liu
Yong Fang
Publikationsdatum
01.06.2024
Verlag
Springer Berlin Heidelberg
Erschienen in
Bulletin of Engineering Geology and the Environment / Ausgabe 6/2024
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI
https://doi.org/10.1007/s10064-024-03715-9