Friday, August 6, 2010

ROAD 2









The other site visit was the Krishnabhir landslide rehabilitation located 83Kms west of the capital city of Kathmandu on the Prithivi Highway. The landslide occurred on August 11, 2000 and ruptured a section of the highway moving large amounts of debris over the existing road and down to the river. Between 2001 and 2003 the landslide debris was stabilized by mitigating water flow using a combination of civil and bio-engineering techniques. Check dams and rock armoured channels were constructed within the main gullies. Culverts, inclined at 15 degrees, were installed underneath the reconstructed highway over the drained and remaining debris. A retaining wall was constructed at the toe of the slide adjacent to the river. Various structures such as wire bolsters, rofa boards (German technology), wire mesh, mulch, seeding and seedlings were also used. Site maintenance including vegetation and civil engineering structures were also discussed during the site visit.

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