Causes of landslide recurrence in a loess platform with respect to hydrological processes

Ling Xu (), Xiaojuan Qiao (), Caixia Wu (), Javed Iqbal () and Fuchu Dai ()

Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, 2012, vol. 64, issue 2, 1657-1670

Abstract: Irrigation-induced landslide is a recurring problem in the Heifangtai loess platform of northwest China. The landslide sites are characterized by a concave topography. Numerical modeling indicates that the groundwater table at the past-landslide site rises more quickly than the other natural platform borders under irrigation conditions. This is consistent with the field observations that seepage of the groundwater appeared in the hollow is higher than that of lateral slopes. In order to investigate the response of soil behavior due to rise in groundwater table, stress-path tests were performed on undisturbed specimens. It has been observed that the increase in pore water pressure in loess can trigger soil liquefaction and eventually results in landslide. Hence, the concave past-landslide site is much more prone to landsliding, which contributed to the landslide recurrence. Copyright Springer Science+Business Media B.V. 2012

Keywords: Landslide; Topography; Groundwater; Loess Plateau (search for similar items in EconPapers)
Date: 2012
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Citations: View citations in EconPapers (2)

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DOI: 10.1007/s11069-012-0326-y

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