Abstract
Landslides in the Three Gorges area of China are often triggered by rainfalls of significant acidity which potentially lead to wetting effects by rainfall precipitation and mineralogical changes induced by adverse chemical reactions. This paper presents a hydro-chemo-mechanical analysis of slope stability in this context. It first surveys typical landslide events that occurred in the Three Gorges area where mineralogical changes were identified and further simulated in the laboratory; both field and laboratory evidences strongly suggest that these changes contributed to the weathering and strength decline of sliding masses. Subsequently numerical simulations are conducted to investigate possible scenarios of strength evolution due to rainfall induced wetting as well as mineralogical changes. The factor of safety of potential slip surfaces is computed under different combinations of hydrological and chemical scenarios. The results of a parametric study indicate the potential consequences of hydro-mechanical and chemo-mechanical processes that may play an important role in the landslides in the Three Gorges area.
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References
Anson, R.W.W., Hawkins, A.B.: Movement of the Soper’s Wood landslide on the Jurassic Fuller’s earth, bath, England. Bull. Eng. Geol. Environ. 61(4), 325–345 (2002)
Chai, B., Yin, K., Du, J., Xiao, L.: Correlation between incompetent beds and slope deformation at Badong town in the Three Gorges reservoir. China. Environ. Earth Sci. 69(1), 209–223 (2013)
Gajo, A., Cecinato, F., Hueckel, T.: A micro-scale inspired chemo-mechanical model of bonded geomaterials. Int. J. Rock Mech. Min. Sci. 80, 425–438 (2015)
Liu, J.G., Mason, P.J., Clerici, N., Chen, S., Davis, A., Deng, H., Liang, L.: Landslide hazard assessment in the Three Gorges area of the Yangtze river using ASTER imagery: Zigui-Badong. Geomorphology 61(2), 171–187 (2004)
McBride, M.B.: Environmental Chemistry of Soils. Oxford University Press, NewYork (1994)
Moon, V.G.: Microstructure control on the geomechanical behaviour of ignimbrite. Eng. Geol. 35(1), 19–31 (1993)
Shuzui, H.: Process of slip-surface development and formation of slip-surface clay in landslide in tertiary volcanic rocks, Japan. Eng. Geol. 61(4), 199–219 (2001)
Vanapalli, S.K., Fredlund, D.G., Pufahl, D.E., Clifton, A.W.: Model for the prediction of shear strength with respect to soil suction. Can. Geotech. J. 33(3), 379–392 (1996)
Udvardi, B., Kovacs, I.J., Szabo, C., Falus, G., Ujvari, G., Besnyi, A., Bertalan, E., Budai, F., Horvath, Z.: Origin and weathering of landslide material in a loess area: a geochemical study of the Kulcs landslide, Hungary. Environ. Earth Sci. 75, 1299 (2016)
Zhao, Y., Cui, P., Hu, L.B., Hueckel, T.: Multi-scale chemo-mechanical analysis of the slip surface of landslides in the Three Gorges, China. Sci. China Ser. E: Technol. Sci. 54(7), 1757–1765 (2011)
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Gaire, A., Zhao, Y., Hu, LB. (2018). A Hydro-Chemo-Mechanical Analysis of the Slip Surface of Landslides in the Three Gorges Area of China. In: Farid, A., Chen, H. (eds) Proceedings of GeoShanghai 2018 International Conference: Geoenvironment and Geohazard. GSIC 2018. Springer, Singapore. https://doi.org/10.1007/978-981-13-0128-5_40
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DOI: https://doi.org/10.1007/978-981-13-0128-5_40
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