EOSC 114 Lecture Notes - Volcanic Rock, Quick Clay, Silt
Document Summary
Adding weight (to top of slope, or somewhere on slope) If average temperature and rainfall is high more water increased weathering of rocks more fractures more soil. If average temperature is around 0 (see internal causes) Decreases normal force/normal stress, which decreases friction and thus with little f. In sediment: (loose rocks, sand, silt, and clay) Too much water = very low angle (oversaturated) Water reduces shear strength along planes of weakness. Water gets into cracks and fractures in rock. If it freezes it expands forcing the fractures apart. If facing sun can melt more cycles. Fail at relatively and/or very low angles of repose. Volcanic layers are weak along planes of weakness w/water content. Clay is very weird, so small pieces (pieces of film) that the. Van der waals foce has an effect (electrostatic effects) when deposited in salt water clay is attracted to other clay particles.
