Thorough wetting is a common cause, which explains why slumping is often associated with
heavy rainfall, storm events and earthflows
. Rain provides lubrication for the material to slide, and increases the self-mass of the material. Both factors increase the rate of slumping.
What is the most common cause of slump?
Thorough wetting is a common cause, which explains why slumping is often associated with
heavy rainfall, storm events and earthflows
. Rain provides lubrication for the material to slide, and increases the self-mass of the material. Both factors increase the rate of slumping.
What causes a slope to become unstable?
Slope failures occur
when driving forces overcome resisting forces
. The driving force is typically gravity, and the resisting force is the slope material’s shear strength. … Weathered geology: Weak, weathered bedrock, jointed rock, or bedrock that dips parallel to the slope can decrease stability.
What conditions can cause a slump?
Slumps often happen
when a slope is undercut, with no support for the overlying materials
, or when too much weight is added to an unstable slope. Figure 1. Slump material moves as a whole unit, leaving behind a crescent shaped scar.
Do slumps occur on steep slopes?
Slump is common where
clay-rich materials are exposed along a steep slope
. Such oversteepend slopes naturally occur on the outside of meanders along the Red River. Slump is typically identified as the downward movement of a block of earth material along some curved surface of failure.
What are 4 types of landslides?
Landslides are part of a more general erosion or surficial pro- cess known as mass wasting, which is simply the downslope movement of earth or surface materials due to gravity. They are classified into four main types:
fall and toppling, slides (rotational and translational), flows and creep
.
How do you get out of a slump?
- Acknowledge and Accept. Slumps have a way of making you feel like something is wrong with you. …
- Give Yourself Grace. Listen, some people are going to tell you that you shouldn’t throw a pity party. …
- Find the Lesson. …
- Set Small Goals.
What are 5 causes of slope failure?
- Erosion.
- Rainfall.
- Earthquakes.
- Geological Features.
- External Loading.
- Construction Activities.
- Rapid Drawdown.
What are different types of slope failures?
- Face failure or slope failure.
- Toe failure.
- Base failure.
What three criteria are considered classifying slope failure?
The three criteria used to describe slope failures are: The type of material that failed (typically either bedrock or unconsolidated sediment)
The mechanism of the failure (how the material moved) The rate at which it moved
.
What is the first stage of the erosion process?
Splash erosion or rain drop impact
represents the first stage in the erosion process.
What does slump mean in slang?
Slump is a slang term for
a sharp decline in business activity, trade, or market values
.
Which change can lead to slope failure?
Which change can lead to slope failure?
the shearing stress on the material exceeds its frictional resistance
(or shear strength) .
What type of mass wasting moves the slowest?
Creep
.
Soil creep
is a slow and long term mass movement.
What is the most common mass wasting trigger?
Increased water content within the slope
is the most common mass-wasting trigger. Water content can increase due to rapidly melting snow or ice or an intense rain event.
When there is free fall and rolling of rocks and debris down the hill a slope then it is called?
Mass Movement is defined as the down slope movement of rock and regolith near the Earth’s surface mainly due to the force of gravity. … Any perceptible down slope movement of rock or regolith is often referred to in general terms as
a landslide
.
