Articles | Volume 20, issue 5
Nat. Hazards Earth Syst. Sci., 20, 1305–1319, 2020
https://doi.org/10.5194/nhess-20-1305-2020
Nat. Hazards Earth Syst. Sci., 20, 1305–1319, 2020
https://doi.org/10.5194/nhess-20-1305-2020

Research article 14 May 2020

Research article | 14 May 2020

Analysis of the instability conditions and failure mode of a special type of translational landslide using long-term monitoring data: a case study of the Wobaoshi landslide (in Bazhong, China)

Yimin Liu et al.

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Cited articles

Ayalew, L., Yamagishi, H., Marui, H., and Kanno, T.: Landslides in Sado Island of Japan: Part I. Case studies, monitoring techniques and environmental considerations, Eng. Geol., 81, 419–431, https://doi.org/10.1016/j.enggeo.2005.08.005, 2005. 
Barlow, J., Martin, Y., and Franklin, S. E.: Detecting translational landslide scars using segmentation of Landsat ETM+ and DEM data in the northern Cascade Mountains, British Columbia, Can. J. Remote Sens., 29, 510–517, https://doi.org/10.5589/m03-018, 2003. 
Bellanova, J., Calamita, G., Giocoli, A., Luongo, R., and Piscitelli, S.: Electrical resistivity imaging for the characterization of the Montaguto landslide (southern Italy), Eng. Geol., 243, 272–281, https://doi.org/10.1016/j.enggeo.2018.07.014, 2018. 
CAGHP – China Association of Geological Hazard Prevention: Emergency Monitoring and Early Warning Technology Guide of Sudden Geological Disaster, T/CAGHP 023-2018, Beijing, China, 2018. 
Chen, L., Liu, Y., and Feng, X.: The investigation report of Wobaoshi landslide, Sanhui Town, Enyang District, Bazhong City, Open File Rep. 57-75, The Institute of Exploration Technology of CAGS, Chengdu, 2015. 
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Short summary
We considered a translational landslide exhibiting an unusual morphology, i.e., the Wobaoshi landslide. The deformation and failure mode of the plate-shaped bodies were analyzed and investigated based on numerical simulations and calculations. The monitoring data and geomechanical model proved that the accumulated water pressure in cracks causes the plate-shaped bodies to creep. Therefore, these research findings are of reference significance for the rainfall-induced translational landslides.
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