Basic Principles of retaining wall design Flashcards
What is required for large-scale mass movements?
Slope stability analysis
Why might retaining structures not be used in large-scale mass movements?
They may be too expensive.
What may be needed instead of retaining structures for large-scale mass movements?
Alternative stabilization methods or monitoring systems.
What characterizes a rockfall?
Hard or consolidated material, like clay with large boulders.
What is a topple in geology?
A block of rock creating a fracture that propagates downwards.
What happens in a rotational landslide?
Shear failure causing a slump to a more stable configuration.
What defines a translational landslide?
Movement along a weak plane, often where material changes occur.
What is a block slide?
Material flows as a block with both translation and rotation
What is unique about a lateral slide?
Material moves sideways on a firm clay base without gravity’s full effect.
How is mass movement different on a small scale?
Contained within a small area, with retaining structures usually sufficient for stabilization.
What are tailings in mining?
Pulverized rock mixed with chemicals, creating a toxic slurry.
Why are tailing dams considered unstable?
They’re built with small dikes that can be breached by water pressure.
What are two purposes of retaining structures?
To create space (temporary or permanent) and stabilize soil or slopes and excavations.
What is a Serviceability Limit State (SLS) in retaining structures
A state where deformation leads to ground loss or infrastructure damage.
What are the four primary concerns in retaining structure design?
Bearing capacity, sliding, overturning, and general instability
