Special Programmes


 


 

                     Consultancies Carried-out 

 
Index Technical Services Our Services About Us Mission & Objectives PDF Downloads Research & Development Information

 

Landslides in

Sri Lanka

Viharagala

Watawala

Beragala

Kahagalla

Naketiya-Koslanda

  Back

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
 
  Back
Landslides Studies & Services Division

Major Landslides in Sri Lanka              

Viharagala Landslide
Village - Viharagala

Occurrence - 16th November 1992

Location - 3km. from Haputale towards Beragala on Haputale - Beragala road at the elevation 17.78m MSL.
This is a debris flow in type ..30m length on the Beragala - Haputale road which disrupted the traffic for three weeks on the road.
Geology - The slide was followed by a rainfall of 175mm of 24 hour period.
The slopes belong to a steep bedrock escarpment. The bedrock with well -developed sub vertical joint sets.

There were earth slops  reported in previous occasions in 1974, 1984, 1986 and 1987.

 

 

 

 

 

Watawala Landslide

District

Nuwara Eliya

DS

Ginigathhena

GS

Watawala

Village

Watawala

Occurrence 

3rd June 1992

Occurred Location

 

Along the railway track between Nawalapitiya and Hatton at Watawala, closed to Watawala railway station.

Description :  Nearly 60 year old Watawala earth slide has frequently disrupted train services.  This became even worse on 3rd June 1992 when engine of a goods train sank into the ground.

This slide which affected nearly 100m length of the railway track between Nawalapitiya and Hatton at Watawala. This occurred immediately following a daylong rain shower of 196m.  This can identify as subsidence and slope movement type.

up

 

Beragala Earth slip

 

District

Badulla

Village

Beragala

Occurrence

16th - 17th November 1997
Location

At 1st km along Beragala - Haliela road A16 between culvert 2/1 & 2/3.

Description : These hill slopes have experienced many landslides over the years.  The above one have caused much damage an inconvenience to normal life and traffic when both upper road A16 to Haliela and the lower road A4 to Wellawaya have kept closed for traffic due to frequent earthslip and rockfalls.
Geology : The rock types in the region consists generally of quertizites, charnokities, charnockitic gneisses, botite gneisses and granulities.

 

Kahagalla Landslide
 

District

Badulla

Village

Kahagalla Estate

Occurred

16th - 17th November 1998

Location

Between the Culvert 11/3 & 11/6 along Beragala - Haliela Road (A 16) with in the Kahagalla Estate between Haputale and Bandarawela. 
Description : The location of slip lies enclosed within a valley surrounded on three sides by mountains rising upto elevations of 152m on the west and 1676 m to 1629m in east.

Geology :    Quartzites, quartze feldspathic gneisses and biotite gneisses are the rock types to be seen around, although rock outcrops are few and far between especially near the slip.  The earthslip has affected road A16 at the elevation 1430 m.

A major earthslip misunderstood to have occurred in 1957 at around 10.1 km. along A 16 road, causing much damage to the road and the Kahagalla tea estate.

up

 

Naketiya - Koslanda Landslide

District

Badulla

 Occurrence

19th November 1997

Location

On the Beragala - Wellawaya main road between 198km and 199km at Koslanda near the bridge No. 199/2.

Description : The Koslanda - Naketiya earthslide is one of the biggest earthslides ever recorded in Sri Lanka which was a mass movement in type.  Surface cracks appeared at the bridge location during the monsoon period in 1988.  The above slide was occurred following a heavy rain for a week.  The slide affect the bridge as well as the Beragala - Wellawaya road which was moved away from the existing area.

 The earth movement continues for a long time from the above date, which terminate all the transports on that road.

Geology : The area is on a scarp slope which belong to the Haputale escarpment.  The area is covered with colluvium overburden with weathered rock exposures like charnokitic gneiss.

 

Recent Landslides in Sri Lanka

up

Back

 

Information:  

nbro@sltnet.lk