Precautions during landslides
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Answer:
Before a landslide
Minimizing the risks from landslides
Landslide risk can be minimized by various methods, including:
Avoidance
With expert input and careful planning, communities can identify unstable slopes and restrict or control development in hazard zones.
Protective measures
For communities that are already established, the municipal or provincial authorities must consider whether protective engineering measures or buy-outs and moving of people and buildings should be undertaken.
Engineered solutions
If unstable slopes cannot be avoided, there are numerous engineered solutions to deter landslides including:
•Improving drainage.
•Reducing the angle of the slope.
•Excavating to unload the top of the slope.
•Building a protective berm or wall to buttress the bottom of the slope.
Containment or diversion structures
Where landslides can neither be prevented nor avoided, a number of physical containment or diversion structures have been designed, including:
•Catchment dams and containment basins to control debris and water.
•Artificial channels or chutes to redirect debris flow.
•Nets and artificial walls to prevent falling rock or earth from hitting roads or structures.
During a landslide
If indoors
•Find cover in the section of the building that is furthest away from the approaching landslide.
•Take shelter under a strong table or bench.
•Hold on firmly and stay put until all movement has ceased.
If outdoors
•Move quickly away from its likely path, keeping clear of embankments, trees, power lines and poles.
•Stay away from the landslide. The slope may experience additional failures for hours to days afterwards.
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