Stability of sandy slopes under seepage conditions |
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Authors: | Hossein Ghiassian Soheil Ghareh |
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Institution: | (1) College of Civil Engineering, Iran University of Science & Technology, P.O. Box 16765-163, Narmak, Tehran, 16846-13114, Iran |
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Abstract: | Stability against shallow mass sliding in saturated sandy slopes under seepage depends on the flow direction and hydraulic
gradient, particularly near the ground surface. Two modes of instability i.e., Coulomb sliding and liquefaction have been
studied and the critical flow directions discussed. The utility of the numerical approach in solving complex flow problems
with irregular boundaries and surface topography is demonstrated by means of two slope examples with different internal drainage
conditions. The numerical results for the seepage gradients at different points are compared with those predicted by the simple
expression derived in this study, and the corresponding effects on the stability are evaluated. |
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Keywords: | Landslide Infinite slope Seepage Horizontal drain Flownet |
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