Significance of Drainage Measures on Landslide Mitigation Measures
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Landslide prevention is a function of decrease in the driving forces or an increase in the resisting forces. Any landslide mitigation measure used must have one or both of the above parameters. Improper drainage is the most important single contributor to landslide initiation. Adequate drainage of water is the most significant element of landslide mitigation measure for both existing and potential landslides. Drainage can be either surface (roadside drains, catch/interceptor drains and chute drains) or subsurface (drainage pipes or horizontal drains, internal drains of retaining soil structures, etc.) measures. This paper briefly mentions about different types of drainage systems and various drainage schemes proposed at few locations along National Highway 58 at Uttarakhand as a part of landslide mitigation measure.
KeywordsLandslide mitigation measures Surface drainage Subsurface drainage
The author would like to acknowledge the contribution of Ms. Padmaja Gurram, Ms. Meenu P.S. and Mr. Manish Barot (Maccaferri Environmental Solutions Pvt. Ltd.) in the preparation of this technical paper.
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