Question

Mitigation measures to prevent landslides

Answer 1

Landslide mitigation refers several man-made activities on slopes with the goal of lessening the effect of landslides. Landslides can be triggered by many, sometimes concomitant causes. In addition to shallow erosion or reduction of shear strength caused by seasonal rainfall, landslides may be triggered by anthropic activities, such as adding excessive weight above the slope, digging at mid-slope or at the foot of the slope.

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Answer 2

Methods to prevent landslide

Explanation:

• The methods which are commonly used for prevention of landslides are as follows:-

1. They are prevented by reducing slopes.
2. Efforts should be made to not allow the additional water to enter into the material.
3. To check the surface water to enter into unstable ground, it is diverted and made to run off as rapidly as possible away from that area.
4. In pervious material, landslides may be prevented by increasing the internal friction of the mass by lowering the water content.
5. In situations where slides may cause loss of life and property, the loose rock material is prevented from sliding by constructing retaining walls ,concrete piers or by use of piling.
6. At some places the unstable unconsolidated material may be consolidated by cement grouting, chemical means and by artificial freezing.