193 soil creep slow soil and weak rock creep fig

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: is under load of water above it Slope Failure Mass will slide if: FricIonal resistance + Cohesion < Driving Force < F < F < driving force f + C (N – p) x tan α + C resisIng force where §༊  N = force perpendicular to the slope §༊  (N – p) x tan α is “force against slope minus pore pressure of water” :mes “tangent of slope angle” §༊  p = pore pressure §༊  α = slope angle §༊  C = cohesion (soil cohesion is soil strength + root strength) Types of Downslope Movement Material Movement Rate Blocks of solid bedrock Fall Slope steepness Debris >2 mm Flow Grain size Earth/soil <2 mm Water content Slide Thickness of moving mass Clay mineral type Amount of material Mass WasIng gravity Typical VelociIes p. 193 Soil Creep Slow, soil and weak rock Creep Fig. 8- 29, p. 200 SoliflucIon http://www.youtube.com/watch?v=CVKsZhrsAec Slides RotaIonal slide (slump) TranslaIonal slide (slip) Rotational Slide = Slump §༊  §༊  §༊  Most common slide Slide along a curved plane Homogeneous, cohe...
View Full Document

This note was uploaded on 01/16/2014 for the course CSE 132 taught by Professor Lang during the Winter '08 term at UC Irvine.

Ask a homework question - tutors are online