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Combining geophysical methods, drilling, and monitoring techniques to investigate carbonaceous shale landslides along a railway line: a case study on Jiheng Railway, China

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Abstract

Landslides are common occurrences along Chinese rail routes. Accordingly, the accurate determination of sliding-surface locations and the underlying causes become critical from the landslide-disaster-management and loss-mitigation viewpoints. In this study, the landslide in the K66 section of the Jiheng Railway (installed in Jinggangshan City, Jiangxi, China) was investigated. The causative factors and characteristics of the landslide were analyzed using geophysical methods as well as drilling and monitoring techniques. The results reveal that a combination of the transient electromagnetic method and electrical resistivity tomography can be used to identify the location of water-rich landslide-prone regions. When combined with the drilling information, these results reveal the tendency of landslide occurrence in regions comprising strongly weathered carbonaceous shale. Moreover, an uneven slope deformation is observed along the railway line. The seepage of surface water into the slope is revealed as the primary cause of landslides. This is because the reduced strength of the strongly weathered carbonaceous shale facilitates the formation of sliding surfaces. This paper presents a comprehensive survey plan for landslides occurring along railway routes. Furthermore, an assessment of the risk of future landslide occurrences in the investigation area is presented, thereby providing an appropriate reference for landslide prevention and loss mitigation.

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Acknowledgements

The authors would like to thank the editors and reviewers for their time and effort in reviewing and improving this paper.

Funding

Much of the work presented in this paper is supported by the Shandong Provincial Natural Science Foundation (grant number ZR2014EEM028), National Natural Science Foundations of China (grant numbers 41877239, 51422904, 51379112, and 40902084), and Fundamental Research Funds for the Central Universities (grant number 2018JC044).

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Contributions

M. Su: conceptualization, methodology, writing—original draft preparation. K. Cheng: writing—original draft preparation, reviewing, editing. Y. Liu: reviewing, editing. Y. Xue: reviewing, editing. P. Wang: reviewing, editing. K. Zhang: reviewing, editing. C. Li: reviewing, editing.

Corresponding author

Correspondence to Yiguo Xue.

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The authors declare no competing interests.

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Su, M., Cheng, K., Liu, Y. et al. Combining geophysical methods, drilling, and monitoring techniques to investigate carbonaceous shale landslides along a railway line: a case study on Jiheng Railway, China. Bull Eng Geol Environ 80, 7493–7506 (2021). https://doi.org/10.1007/s10064-021-02365-5

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  • DOI: https://doi.org/10.1007/s10064-021-02365-5

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