LANDSLIDE IN SRI LANKA

 A landslide or landslip is a geological phenomeon which includes a wide range of ground movement, such as rock falls, deep failure of slopes and shallow debris flows, which can occur in offshore, coastal and onshore environments. Although the action of gravity is the primary driving force for a landslide to occur, there are other contributing factors affecting the original slope stability. Typically, pre-conditional factors build up specific sub-surface conditions that make the area/slope prone to failure, whereas the actual landslide often requires a trigger before being released.




This interactive satellite map of Kandy provides a birds-eye view of the city and locates its major religious sites. Use the buttons on the map to zoom in.




 Peradeniya is precariously perched after an earthslip.

Landslide hazard zonation maps are prepared at NBRO by integrating the individual contributions made by factors such as;

(I) bedrock geology

(II) hydrology & drainage

(III) surface overburden

(IV) slope angle range

(V) land use

(VI) land forms

 In these maps, zones that are labeled as

(1) landslides are expected

(2) modest level of landslide hazard exists

(3) landslides are not likely to occur

(4) safe slopes indicate the distribution of relative landslide potential in a given area.

The scope of the NBRO’s mapping programme was to generate landslide hazard zonation maps that can be utilized in the process of development to identify the potential landslide hazard in the mountainous area of the country. The landslide hazard zonation maps are available at 1:50,000 scale covering the districts of Matale, Kandy, Kegalle, Nuwara Eliya, and Ratnapura. 1: 10,000 scale maps are also available for selected areas in Badulla and other districts listed above. 

 

  

We say that a flow has occurred if the material moving downslope is being transported as a very thick fluid (like a river of debris, rock, and/or soil), rather than as a coherent unit. Often, water is the primary transport agent for the flow. 

                                                      How to Protect Your Property

If your property is in a landslide-prone area, contract with a private consulting company specializing in earth movement for opinions and advice on landslide problems and on corrective measures you can take. Such companies would likely be those specializing in geotechnical engineering, structural engineering, or civil engineering. Local officials could possibly advise you as to the best kind of professional to contact in your area. Taking steps without consulting a professional could make your situation worse.

Install flexible pipe fittings to avoid gas or water leaks. Flexible fittings will be less likely to break.

                                                                                                                                 
                                                 MAP OF KANDY PROVIDES
                                  

                                                                                                              

   

                                PICTURES OF LANDSLIDE

 More details  www.meteo.gov.lk