 |
Village
- Viharagala |
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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.
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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.
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Beragala Earth slip
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| |
|
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. |
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|
|
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.
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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. |
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Recent Landslides in Sri
Lanka |
