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Geotechnical and Geological Engineering

Erschienen in:

11.07.2018 | Original Paper

Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope

verfasst von: Hang Lin, Wenwen Zhong

Erschienen in: Geotechnical and Geological Engineering | Ausgabe 2/2019

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Abstract

Rainfall infiltration is an important factor that leads to slope instability. In this study, a numerical model for slope is built to investigate the effects of rainfall intensity and its pattern on slope stability. Results show that rainfall intensity and its pattern significantly influence slope stability due the following instances: (1) the safety factor of slope initially decreases and then stabilizes during rainfall, which is defined as the effective rainfall days; moreover, when the rainfall intensity is less than the saturated permeability coefficient of soil, the effective rainfall days decreases with the increase of rainfall intensity. (2) Under the same rainfall intensity, the ultimate safety factor of sand slope when the effective rainfall days is reached is greater than that of the clay slope. (3) When the rainfall intensity is less than the saturated permeability coefficient of soil with the same total precipitation, a longer rainfall duration indicates a larger slope safety factor; conversely, when the rainfall intensity is greater than the saturated permeability coefficient of soil, a longer rainfall duration indicates a smaller slope safety factor.

Vorheriger Artikel Evaluation of Engineering Properties of Some Carbonate Rocks Trough Corrected Texture Coefficient

Nächster Artikel Vipulanandan Models to Predict the Mechanical Properties, Fracture Toughness, Pulse Velocity and Ultimate Shear Strength of Shale Rocks

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Titel: Influence of Rainfall Intensity and Its Pattern on the Stability of Unsaturated Soil Slope
verfasst von: Hang Lin
Wenwen Zhong
Publikationsdatum: 11.07.2018
Verlag: Springer International Publishing
Erschienen in: Geotechnical and Geological Engineering / Ausgabe 2/2019
Print ISSN: 0960-3182
Elektronische ISSN: 1573-1529
DOI: https://doi.org/10.1007/s10706-018-0631-7

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