Landslide Videos :)

National Geographic



FirstScienceTV

Thursday, January 17, 2008

Landslides



These pictures below were taken at Labrador Park.


This picture shows a landslide at Labrador Beach. The nature of movement of landslide is rotational slide and slumping. Rotational slides are common on steep slopes. When coherent blocks of material slip down, back tilted slopes are formed at the surface. Secondly, slumps have rotational movements along a curved slide plane. They are characterized by over-steepened slopes such as marine cliffs or actively retreating escarpments. They may also take place on the slope made up of a single type of rock or soil.

Taken from: http://www.flickr.com/photos/wildsingapore/489508936/

This second picture shows mitigation to prevent further mass movement. The canvas is placed over the cliff to ensure that rain would not reduce the cliff's shear strength. This is because water can add weight to the cliff and dissolves some of the materials that bind the rocks together. The canvas ensures that water on it would flow downwards, thereby not affecting the cliff.

No comments: