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EOSC - Landslide Reasons, Triggers, Causes

Quiz by mskp
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Last updated: March 21, 2023
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First submittedMarch 21, 2023
Times taken10
Average score44.2%
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Hint
Answer
angle of repose
steepest angle without collapse
depends on ...
material
forces involved - 1
gravity
as ...
shear stress
2
friction
3
cohesion
as ...
shear strength
material strength - rock
high/moderate
sediment
low
factor of safety
shear strength over shear stress
if above one, ...
stable
redefine angle of repose
factor of safety is one
cause vs.
long term
 
lead to instability of slope
 
reduce shear strength
 
increase shear stress
 
do not initiate movement
trigger
short events
 
one trigger
 
initiates failure
cause examples external - 1
slope angle
2
undercutting
Hint
Answer
3
overloading
4
vegetation
which can be ...
good and bad
5
climate
cause examples internal - 1
water
which can be ...
good and bad
depends on ...
slope type
also can cause ...
frost wedging
2
inherently weak materials
like ...
volcanic rock
 
quick clay
3
bad geologic structures
trigger examples
earthquakes
 
snow melt
 
rain
 
noise
 
vehicles
 
volcanic eruptions
 
excavation
 
skiing
 
jumping
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