How do you mitigate mass wasting?
Engineering solutions include barriers and retaining walls, drainage pipes, terracing the slope to reduce the steepness of the cuts, and immediate revegetation. Rockfalls can be controlled or eliminated by the use of rock bolts, cables, and screens and by cutting back slopes to lesser gradients.
What is done to help mitigate the effects of mass wasting events?
Slope support is one of most common types of mitigation for potential mass wasting. As mentioned above, a retaining wall can be built to support a steep slope. Next, the retaining wall must be anchored to the bedrock within the slope to hold the wall to the slope.
What are the consequences of mass wasting?
Debris avalanches and debris flows result in large, short-term increases in sediment and woody debris, channel scour, large-scale movement and redistribution of bed-load gravels and woody debris, damming and obstruction of channels, and accelerated channel-bank erosion and undercutting.
What are the 4 types of mass wasting?
The most common mass-wasting types are falls, rotational and translational slides, flows, and creep.
How do humans can contribute to mass wasting?
One of the most common anthropogenic causes of mass wasting is road construction, and this applies both to remote gravel roads built for forestry and mining and large urban and regional highways.
How do drains help prevent landslides?
How do drains help to prevent landslides? Drains divert water away from the slope. If you see a steep cliff with piles of rocks at the bottom, what kind of mass wasting has occurred?
How do human activities induce mass wasting?
Humans can contribute to mass wasting in a few different ways: Excavation of slope or its toe. Loading of slope or its crest. Drawdown (of reservoirs)
How do human activities contribute to mass wasting?
Yes, in some cases human activities can be a contributing factor in causing landslides. Many human-caused landslides can be avoided or mitigated. They are commonly a result of building roads and structures without adequate grading of slopes, poorly planned alteration of drainage patterns, and disturbing old landslides.
What are some examples of mass wasting?
Rock falls, slumps, and debris flows are all examples of mass wasting. Often lubricated by rainfall or agitated by seismic activity, these events may occur very rapidly and move as a flow.
What is the major cause of mass wasting?
It can be triggered by natural events like earthquakes, volcanic eruptions and flooding, but gravity is its driving force. Although gravity is the driving force of mass wasting, it is impacted mainly by the slope material’s strength and cohesiveness as well as the amount of friction acting on the material.
How does mass wasting occur?
Mass wasting is the movement of rock and soil down slope under the influence of gravity. Rock falls, slumps, and debris flows are all examples of mass wasting. Often lubricated by rainfall or agitated by seismic activity, these events may occur very rapidly and move as a flow.
What are some broad mitigation techniques of landslide?
Landslide mitigation:-
- Reinforcement measures.
- Geometry modification.
- Protection measures.
- Geometric modification.
- Surface erosion control.
- Draining techniques.
- Reinforcement measures.
What if we can’t predict mass-wasting hazards?
In situations where we can’t predict, prevent, or delay mass-wasting hazards, some effective measures can be taken to minimize the associated risk. For example, many highways in B.C. and western Alberta have avalanche shelters like that shown in Figure 15.21.
Can We prevent mass wasting in the long term?
As already noted, we cannot prevent mass wasting in the long term as it is a natural and ongoing process; however, in many situations there are actions that we can take to reduce or mitigate its damaging effects on people and infrastructure. Where we can neither delay nor mitigate mass wasting, we should consider moving out of the way.
Is delaying mass wasting a worthy endavour?
Delaying mass wasting is a worthy endeavour because during the time that the measures are still effective, they can save lives and reduce damage to property and infrastructure such as homes and roads. But we must be careful to avoid activities that could make mass wasting more likely.
What is a mass-wasting event?
Mass-wasting events are triggered by changes that slope angles and weaken slope stability, such as rapid snow melt, intense rainfall, earthquake shaking, eruption, storm waves, , and human activities. Excessive is the most common trigger.