Mass Wasting Week 6.

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Presentation transcript:

Mass Wasting Week 6

Questions for Discussion Would you live on a slope? If so, where? What level of risk from mass wasting is acceptable to you? (How would you know if the slope risk was assessed accurately?) What should be done by people and communities in areas prone to slope failure to prepare for the hazard and prevent catastrophe?

Other Questions to Consider What factors impact the stability of a slope? The five concepts form Chapter 1

Mass Movements Mass Wasting Down slope movement of earth materials Caused by gravity

Impact of Mass Movements Structural damage Surface disruption

Slope Factors Angle of slope Water content Material composition Material orientation Vegetation Loading Undercutting Weathering of materials

Slope Movement Triggers Rainfall Vibration Undermining Loading

Types of Slope Failures Slides Flows Falls Creep Avalanche

Addressing Unstable Slopes Identification & mapping Slope monitoring Stabilization vegetation water removal structural controls

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