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Deformation of the Zhangjiazhuang high-speed railway tunnel: an analysis of causal mechanisms using geomorphological surveys and D-InSAR monitoring

journal contribution
posted on 22.09.2021, 10:12 by XM Meng, TJ Qi, Y Zhao, Tom DijkstraTom Dijkstra, W Shi, YF Luo, YZ Wu, XJ Su, FM Zhao, JH Ma, Y Zhang, G Chen, DX Chen, MS Zhang
On 18 January 2016, the Zhangjiazhuang high-speed railway tunnel in Ledu, Qinghai Province, China, underwent serious deformation and structural damage. A crack formed at the top of the tunnel and the concrete on the crown peeled off. As a result, the tunnel could not be operated for three months. In order to determine the types and spatial distribution of the landslides in the region and the surface deformation characteristics associated with the tunnel deformation, we used field geological and geomorphological surveys, unmanned aerial vehicle image interpretation and differential interferometric synthetic aperture radar (D-InSAR) surface deformation monitoring. Nine ancient and old landslides were identified and analysed in the study area. Surface deformation monitoring and investigation of buildings in several villages on the slope front showed that the tunnel deformation was not related to deep-seated gravitational slope deformation. However, surface deformation monitoring revealed an active NEE-SWW fault in the area intersecting the tunnel at the location of the tunnel rupture. This constitutes a plausible mechanism for the deformation of the tunnel. Our study highlights the need for detailed engineering geomorphological investigations to better predict the occurrence of tunnel deformation events in the future.

Funding

National Key Research and Development Program of China (Grant No. 2018YFC1504704)

National Natural Science Foundation of China (Grant No. 41661144046)

Fundamental Research Funds for the Central Universities (Grant No. lzujbky-2018-k14)

Key Research and Development Program of Gansu Province (Grant No. 18YF1WA114)

History

School

  • Architecture, Building and Civil Engineering

Published in

Journal of Mountain Science

Volume

18

Issue

7

Pages

1920 - 1936

Publisher

Springer

Version

AM (Accepted Manuscript)

Rights holder

© Science Press, Institute of Mountain Hazards and Environment, CAS and Springer-Verlag GmbH Germany, part of Springer Nature

Publisher statement

This paper was accepted for publication in the journal Journal of Mountain Science and the definitive published version is available at https://doi.org/10.1007/s11629-020-6493-5.

Acceptance date

23/03/2021

Publication date

2021-07-13

Copyright date

2021

ISSN

1672-6316

eISSN

1993-0321

Language

en

Depositor

Dr Tom Dijkstra. Deposit date: 21 September 2021