GEOB 103 Lecture Notes - Lecture 8: Drainage Density, Sediment Transport, Indium Phosphide
14 Sep 2018
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Document Summary
Infinite slope model: considers the balance of forces at a point on a potential failure plane assumed to have a constant slope and extend infinitely it"s margins to avoid edge effects. Environmental and time-dependent effects --> changes short and long timescales and influence slope stability, most important factors which influence slope stability. Rainfall influences the pore water pressure (more rainfall means it is more unstable, as you are reducing the resisting forces) Seismically driven forcing (e. g. change in gravity and earthquakes) The role of vegetation --> roots make the soil more stable, which adds more cohesion to the soil. Apparent cohesion: not the true cohesion (above the material), but rather cohesion given solely by the vegetation. If you increase the thickness of the soil, you always change the stability. Slope morphology --> how the slope is shaped is more important than the material of the slope.
