Explain remedial measure against slope failure problems.
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Generally the stability of slope can be enhanced by the different types of corrective measures:
i) Flattering the slope due to which tendency for soil mass to slide is reduced.
ii) Providing a berm below the toe of the slope helps to increase the resistance to the movement of the soil from the slope. It is especially useful when there is a possibility of a base failure.
iii) Drainage helps in reducing the seepage forces and hence increase the stability.
iv) Densification by use of explosives, vibrofloatation,etc. helps in increasing the shear strength of cohesion less soil and thus increasing the stability.
v) Consolidation by surcharging or other methods helps in increasing the stability of slopes.
vi) Grouting and injection of cement or other compounds into specific zones help in increasing the stability of slopes.
vii) Sheet piles and retaining walls can be installed to provide lateral supported and to increase the stability.
viii) Stabilization of the soil helps in increasing the stability of slopes.
ix) Planting the surface of the slope is beneficial to protect the slope against shallow slides.