Slopes Flashcards
1
Q
Unstable slopes
A
Clays
Most rocks
Planar weakness
Potential failure
2
Q
Types of failure
A
Large rock- planar/ wedge slices
Small rock- falls/ toppled
Mud slides- flows or debris flows weak clays or failed rock materials
Complex failures- multiple processes
3
Q
Speed of failure
A
Slow- soft clays and ductile materials
Rapid- brittle rock weakened by initial failure or fracture
Cyclic- stable slope as de Tia becomes toe weight
4
Q
Landslide trigger processes
A
Cause- trigger event + structure
Water- ground water pressure
Toe removal- removes resistance to movement
Natural- undercutting
Artificial- toe removal, quarrying mining
Strength reduction- weathering
Vibration- soil restructuring or rock fracture
Earthquake- vibration
5
Q
Slope failures
A
Planner slide Wedge failure Rockfall Rock topple Single rotation Multiple rotation Block slide Mud flow
