EARTHSC 2GG3 Lecture Notes - Lecture 12: Laguna Beach, California, Pore Water Pressure, Water Content
6 May 2016
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Lecture 12, october 3, 2012: forces on a slope, downslope ground movement is natural part of landscape evolution, gravity pulls rock on slope vertically downward. Rock may move slowly in gradual process of creep. Catastrophic when large volume of material moves downslope quickly: when slope will fail depends on. 1. 1. slope and load: relationship between slope angle (steepness of slope) and load (weight of material on slope) determines slope failure. Steeper slope greater downslope force greater likelihood of slope failure: angle of repose: steepest angle at which any loose material is stable. Depends on angularity and size of grains and moisture content: causes of landslides. Changes in slope imposed by external factors, such as. Loading of upper slope by construction: undercutting of slope by stream or road-building, addition of water, removal of vegetation. Erosion at base of slope, by waves at coast. Balance between forces acting on slope can be upset by.
