Question

Constructive effects of landslides in 300 to 350 words

Answer 1

Landslides cause property damage, injury and death and adversely affect a variety of resources. For example, water supplies, fisheries, sewage disposal systems, forests, dams and roadways can be affected for years after a slide event.

The negative economic effects of landslides include the cost to repair structures, loss of property value, disruption of transportation routes, medical costs in the event of injury, and indirect costs such as lost timber and lost fish stocks. Water availability, quantity and quality can be affected by landslides. Geotechnical studies and engineering projects to assess and stabilize 

 

Landslide losses

Large, infrequent landslides contribute less to personal and property losses than do the smaller, more frequent slides and debris torrents in populated areas of British Columbia.

 



The Vancouver to Squamish highway has been affected by 14 major debris torrents since 1906. Twelve lives have been lost and 11 bridges, 4 homes and numerous structures have been damaged or destroyed. Not one of these 14 slide events was larger than 20 000 cubic metres (photo courtesy of the Ministry of Transportation and Highways).

 

 

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Landslides in British Columbia was originally produced as Information Circular 1993-7 by the BC Geological Survey of the B.C. Ministry of Energy, Mines and Petroleum Resources in cooperation with the B.C. Ministry of Health, the B.C. Ministry of Transportation and Highways, the B.C. Ministry of Environment, Lands and Parks, the B.C. Ministry of Forests, the B.C. Provincial Emergency Program, and with the assistance of the Geological Survey of Canada

Landslides in British Columbia was originally produced as Information Circular 1993-7 by the BC Geological Survey of the B.C. Ministry of Energy, Mines and Petroleum Resources in cooperation with the B.C. Ministry of Health, the B.C. Ministry of Transportation and Highways, the B.C. Ministry of Environment, Lands and Parks, the B.C. Ministry of Forests, the B.C. Provincial Emergency Program, and with the assistance of the Geological Survey of Canada


 

Answer 2

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LandSlide➫ A mass of rock and earth moving suddenly & quickly down a steep slope.

♦ Water availability, quantity and quality can be affected by landslide.

♦ It caused when earthquakes occur on areas with steep slopes, many times the soil slips.


➧ Causes of Landslides:-
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❱ Heavy Rain
❱ Soil Erosion
❱ Earthquakes
❱ Deforestation
❱ Volcanic Activity

➧ Effects of Landslides:-
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❱ It cause serious damage to property.

❱ Destruction of infrastructure.

❱ Damage to land and loss of natural resources.

❱ It also block rivers and increase the risk of floods.

➧ Types of Landslide:-
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[1] Rock Slides:-

❱ A landslide involving bedrock in which the rock that moves remains largely intact for at least a portion of the movement.

[2] Earth Slides:-

❱ A Soil Flow landslide where the majority of the soil materials are fine-grained & cohesive.


➧ Precautions of Landslides:-
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❱ Stay away from the slide area.

❱ Stay alert and awake.

❱ If you are in areas susceptible to landslides consider leaving if it is safe to do so.

❱ Listen to local radio or television stations for the latest emergency information.

➧ Prevention of Landslides:-
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❱ Directing surface water sources away from the landslides.

❱ Draining ground water streams away from the landslides.

❱ Minimizing irrigation on the surface of the soil.

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