Date post: | 12-Apr-2017 |
Category: |
Career |
Upload: | kailash-patel |
View: | 34 times |
Download: | 2 times |
Landslide at Malin village by
Kailash Patel
(16WM60R07)
School of Water Resources
Indian Institute of Technology, Kharagpur
Content
1. Landslide ; General introduction
2. Causes of landslide
3. Devastation
4. Relief and rescue
5. Rehabilitation
6. Preventive measures
7. Consequences
Introduction : Landslide is a downward movement of the soil, rock or
vegetation under the influence of gravity. Factor of safety (F) :
Weight
Driving force
Resisting force
Site material
bedrock F =
F < 1 : Landslide occur (instability)
F > 1 : Landslide not occur ( stability )𝛉
In addition, the resisting force significantly reduced due
to the rainfall and earthquake vibration.
Three distincts physical event occur during a landslide
Initial slope failure,
subsequent transport,
Final deposition of the material.
Landslide : Malin villageLocation map
Top view of Malin village from google map image
Probable area that moved down along the slope
Direction of landslide
Salient features
On 30 July 2014, a landslide occurred in the village of Malin in the
Ambegaon taluka of the Pune district in Maharashtra, India.
The landslide, which hit early in the morning (5 a.m.) while residents
were asleep.
The landslide was first noticed by a bus driver who drove by the
area and saw that the entire village was almost buried in the heap
of mud and earth.
Though initial reports stated that the landslide had killed 56
people , officials expected the death toll to exceed 150.
As of 4 August 2014, the death toll had reached to 161. The
bodies so far recovered were of 65 men, 83 women, 13
children.
Rains continued after the landslide making rescue efforts
difficult.
Type of Landslide
Debris type landslide
Initial slope failure
Subsequent transport
Final deposition
Flow route
Flow route
Buried houses
boulders
Affected area
Causes of landslide
Very heavy rainfall
Improper drainage
Deforestation and levelling of land on the hill for cultivation
Change in agriculture practices
Backwater of Dimbhe dam
Human interference
Heavy rainfall
The region was receiving particularly very heavy rainfall in the
week between 25th to 31st July.
Cumulative rainfall in the week as recorded by NASA’s and
TRMM was more than 600 mm, most of it between 29th-
30th July.
Improper drainage system
Due to the absence of any proper drainage system, water was
accumulated at the top of the hill.
The accumulated rainwater percolates through either interface
of weathered material and rock or major/minors joints and cracks
at the surface of the hill.
It may also lead to extensive landslide that the whole village
except few houses and a primary school were buried under a
huge mass of debris.
Large scale land use modification
Villagers had recently shifted from cultivation of rice
and Finger millet to wheat, which required large levelling of
slopy areas.
Thus it contributed to instability of the hills.
Levelling of land : The state government launched a scheme called ‘Padkai’ for
tribals on a pilot basis in the Malin village about three years ago.
the practice of step agriculture involves small cuts being made on the hill side, which is subsequently flattened and levelled to grow rice.
Backwater of Dimbhe dam
Live Storage Capacity : 354 MCM Reservoir Area : 1754.7 ha.
1.5 Km
Devastation
Before After
A huge loss of property and assets were observed after the
disaster along with loss of infrastructure, lifeline facilities,
farmland.
Loss in productivity of agricultural or forest lands due to
being buried by debris.
Reduced property values due to unwillingness of people to
buying disaster prone land.
Loss of revenue due to loss of productivity, transport
breakdown, etc.
Loss of human productivity due to death and injury.
Reduction in quality of life due to the deaths of family
members and the destruction of personal belongings, which
had a great sentimental value.
Relief and rescue 9 Relief and Rescue teams of NDRF immediately came into
action and carried out operation between 30 July 2014 to 6 Aug
2014.
NDRF teams carried out 07 long day & night operation and
rescued 8 live victims, retrieved 161 dead bodies, 58 animal
carcasses and property worth 30 lacks including ornaments gold
and silver vessels.
Close to 650 NDRF person ,doctor, nurses and voluenteers
involved in rescue efforts.
Hilly landscape ,narrow road and continuous rain making
access to spot difficult.
A medical team consisting of paramedics is also a part of the
rescue team.
Bank of Maharashtra has sent relief material such as Food,
Drinking Water and Medical kits at the spot along with Bank staff
comprising as CSR team to handover the material to Govt.
District officials and members of NDRF team for immediate use.
BSNL AND VODAFONE had installed temporary network at the
site to make easy rescue and relief operation.
A group of villagers in Malin and nearby areas have started
centres in Malin village to update the list of those people who
were away from homes at the time of the landslide.
Maharashtra State Electricity Distribution Company Ltd on 30
July restored electricity supply to Malin village.
Pune district administration will immediately start the work of
erecting 40 odd shelters for temporary rehabilitation of the
landslide-affected persons.
Rehabilitation of Malin Village
The Home Minister Rajnath Singh announced Rs 2 lakh to the
family of the victims.
Maharashtra Chief Minister Prithviraj Chavan also announced an
aid of Rs 5 lakh to the family of the victims from the CM Relief
Fund.
It was also said that the state government would provide free
medical treatment to the injured.
Many villagers in the affected area sheltered by the district
administration at “Maratha Bhawan" in an adjacent village.
The Sakal Relief Fund has decided to construct a school
and provide educational facilities to the children of the
villagers of landslide-hit Malin village.
Maratha Relief Fund has collect about Rs 1.11 crore for
rehabilitation of the villagers of Malin.
Rao, added that a special drive would be conducted to
provide ration cards, Aadhar cards, and voter’s identity
cards, as most of the villagers had misplaced their
documents in the landslide
The administration is making a list of the affected villagers, so
that according to their age and education, employment
opportunities can be provided to those who survived.”
The budget of Rs 2 lakh was allocated for 451 square feet
permanent tenements.
Preventive Measures As the principal of the initiation of mass movement is water,
this main causative agent has to be prevented from entering into
the affected area.
The occurrence of the landslides cannot be prevented but its
affects can be minimized by taking timely preventive
measures.
The magnitude of the mass movement can be minimized by
construction an efficient drainage network .
Soil erosion is also the causative factor which can be reduced
by increasing the vegetative growth in the sloping areas.
Landslides can also be minimized by using appropriate
engineering technology which involves provision of surface as
well as subsurface drainage, removal of unstable slope material
and modification of unstable slope to stability, lastly construction
of retaining walls in the periphery of the area where Padkai is
developed.
Public awareness about changing the agricultural practices as
well as controlling the human made parameters that can initiate
to landslides.
Consequences
Media during landslide
Thank you
References
Jadhav A and Patil R (2015). Study of Landslide Hazard and Mitigation
Methods In Malingaon. International Journal on Recent and Innovation
Trends in Computing and Communication.ISSN: 2321-8169 Volume: 4 Issue:
4 293 – 295.
A. F. Shaikh and P. K. Gunjal (2014). Report on landslide in malin village
in pune. International journal of engineering sciences & research
technology . ISSN: 2277-9655 .
Bawaskar and jagtap A ( 2015 ). Rehabilitation of Malin Village. International
journal of engineering sciences and research technology. ISSN: 2321-9637