Malin Landslide

Malin Landslide

One Day Workshop on Forensic Geotechnical E

Mr. Shivaji M. Sarvade

Mr. Pratik S. Khadatare(Fabtech Technical Campus, College of E

Solapur, Maharashtra.)

ide: A Case Stud

l Engineering, GNDEC, Ludhiana

of Engineering & Research.

"Engineering is a noble sport . . . bu

the game. Let it be your ambition

announce your blunders. . . . Once youannounce your blunders. . . . Once you

blunders in the face of reasonable evid

sport. You are already a crank or a grou

but occasional blundering is a part of

to be the first one to discover and

you begin to feel tempted to deny youryou begin to feel tempted to deny your

evidence you have ceased to be a good

grouch.”

~ Karl Terzaghi

2

Introdu

• A massive landslide wiped out the vil

Pune city, in the Western Ghats on Jul

• Mound of mud and debris that

swallowed up almost the entire tribal

• Final death toll was 153 when the

around 100 people were missing

oduction

village of Malin located at 110 KM from

July 30.

came down from a nearby hillock,

al village of around 50 families.

the rescue operation was stopped and

3

Introduoduction

4

GEOGRAPHICAL

• Malin village is a part of westernHeritage Site and is one of the eigdiversity in the world with average

Basalt is the predominant rock fou• Basalt is the predominant rock fouof 3 km. Other rock types foundgneisses etc. with detached occurrore, dolerites and anorthosites.

• Malin is southern part of AmbegaonSahyadri Mountain range and is tow

AL BACKGROUND

ern ghat which is a UNESCO Worldeight "hottest hotspots" of biological

rainfall of 1171 mm.

found in the hills reaching a thicknessfound in the hills reaching a thicknessnd are granite gneiss, metamorphicrrences of crystalline limestone, iron

aon taluka which falls to the foothill oftowards the west side of Pune city.

5

CULPR

• Very Heavy Rainfall.

• Deforestation and Levelling Of Land

• Change in Agriculture Practice

• Backwater of Dimbhe Dam.

• Human Interference in Nature.

PRITS…

and on the Hill for Cultivation.

6

CULPR

TRMM time series precipitation graph for the

PRITS…

the Malin in the last week of July 7

CULPR


• Deforestation and Levelling of Land




PRITS…

nd on the Hill for Cultivation.

8

CULPR






PRITS…


9

CULPR






PRITS…


10

CULPR

Backwater of Dimbhe

PRITS…

mbhe Dam.11

CULPR






PRITS…


12

MITIGA

• Land Assessment.

• Slope Stabilization and Developmen

• Prepare Slope Stability Maps.• Prepare Slope Stability Maps.

• Prepare Landslide Inventory Datab

• Redirect Debris Channel.

• Vegetation.

GATION

ent.

abase.

13

MITIGA






• Vegetation.

GATION

ent.

abase.

14

MITIGA

Slope S

GATION

Stability

15

MITIGA






• Vegetation.

GATION

ent.

abase.

16

MITIGA






• Vegetation.

GATION

ent.

abase.

17

MITIGA






• Vegetation.

GATION

ent.

abase.

18

MITIGA

Redirect Deb

GATION

ebris Channel

19

MITIGA






• Vegetation.

GATION

ent.

abase.

20

MITIGA

Vegetation

GATION

tion on slopes21

PRECAUTIONAR

• The natural drainage shouldn’t be d

• For support wall, wider base and sligprovided.provided.

• Care should be taken for anything t

• Exposing a very high vertical face sh

• Avoid adding load very close to the

ARY MEASURES

disturbed or blocked on the slope.

slightly incline (towards hill) are to be

that may move/fall downward.

should be avoided.

edge of the slope.

22

ALERT SY

• Efforts shall be taken to devise a pr

prospective landslides in the potent

• One such system is NASA-TRM

Mission).

SYSTEMS

program which can generate alerts for

ential zones.

RMM (Tropical Rainfall Measuring

23

ALERT SY

TRMM data for the Malin la

SYSTEMS

landslide, sourced 30th July 24

Concluding

• Landslides are common in the arearuns from June through September

• Similar deforestation and environmand landslides in other parts of India

• Similar deforestation and environmand landslides in other parts of India

• Last year, more than 6,000 peopleswept through Uttarakhand state d

ing Remarks.

rea during the monsoon season, whicher.

onmental damage have caused floodsndia.onmental damage have caused floodsndia.

were killed as floods and landslidesduring the monsoon season.

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Concluding

• According to the information obtain

22,483 hutment in 327 hilly areas a

the city, including Western and Eathe city, including Western and Ea

the people living there need to be sh

• In the main city, 49 spots are dang

3986, while in Mumbai Suburb 278

ing Remarks.

ained under RTI, In Mumbai city over

across 25 Assembly constituencies in

Eastern suburbs, are dangerous andEastern suburbs, are dangerous and

shifted as soon as possible.

angerous in which total hutments are

78 spots are most dangerous.

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Malin Landslide

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