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Which of the fallowing can be a safe construction practice to mitigate landslide hazards?
  • a)
    Restrict dam construction
  • b)
    Heavy metal road in mountain valley
  • c)
    Multi-storey building
  • d)
    None of the above
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
Which of the fallowing can be a safe construction practice to mitigate...
Landslides:
  • A landslide is defined as the movement of a mass of rock, debris, or earth down a slope.
  • Landslides are a type of "mass wasting," which denotes any down-slope movement of soil and rock under the direct influence of gravity.
  • The term "landslide" encompasses five modes of slope movement: falls, topples, slides, spreads, and flows.
  • These are further subdivided by the type of geologic material (bedrock, debris, or earth).
  • Debris flows (commonly referred to as mudflows or mudslides) and rockfalls are examples of common landslide types.
Causes of Landslides:
  • Almost every landslide has multiple causes. Slope movement occurs when forces acting down-slope which is mainly due to gravity exceed the strength of the earth materials that compose the slope.
  • Causes include factors that increase the effects of down-slope forces and factors that contribute to low or reduced strength. 
  • Landslides can be initiated in slopes already on the verge of movement by rainfall, snowmelt, changes in water level, stream erosion, changes in groundwater, earthquakes, volcanic activity, disturbance by human activities, or any combination of these factors.
  • Human activity, such as agriculture and construction, can increase the risk of a landslide. Irrigation, deforestation, excavation, and water leakage are some of the common activities that can help destabilize, or weaken, a slope.
  • Earthquake shaking and other factors can also induce landslides underwater. 
  • The loss of forest vegetation leads to a reduction in soil cohesion and a decrease in the shear strength of the soil profile. As a result, the slope becomes more susceptible to landslides, and the return time of landslides decreases. When a landslide removes the soil profile, there may not be adequate time for seedlings to grow and enhance soil stability.
From the above discussion, it can be concluded that heavy metal road in a mountain valley, multi-storey building and dam building is not a safe construction practice at landslide-prone areas.
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Which of the fallowing can be a safe construction practice to mitigate...


Restrict dam construction

- Dam construction can lead to changes in the natural landscape, causing destabilization of soil and increasing the likelihood of landslides.
- By restricting dam construction in areas prone to landslides, the risk of triggering a landslide can be minimized.
- Implementing proper land use planning and environmental impact assessments can help identify high-risk areas and prevent construction in those locations.
- Promoting alternative methods of energy production, such as solar or wind power, can also help reduce the need for dam construction in landslide-prone areas.

By following these practices and restrictions, the impact of landslides on communities and infrastructure can be significantly reduced.
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Which of the fallowing can be a safe construction practice to mitigate landslide hazards?a)Restrict dam constructionb)Heavy metal road in mountain valleyc)Multi-storey buildingd)None of the aboveCorrect answer is option 'A'. Can you explain this answer?
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