mose project

Case Study of MOSE Project

Guided by

Mr. APPU JOHN

Asst. Professor

Civil Engineering Department

VJCET, Vazhakulam

Presented by

SHEEN THOMSON

S7 CIVIL

Roll No: 59

VJCET

Mose Project & Maeslant Project8/14/2016 1

CONTENTS

INTRODUCTION

CAUSES OF FLOODS

MOSE SYSTEM

OBJECTIVES OF MOSE

OPERATING PRINCIPLE

ELEMENTS OF BARRIER GATE

CONSTRUCTION METHOD

FACTORS CONTROLLING CLOSURE OPERATION

CONCLUSION

REFERENCES


INTRODUCTION

Venice World famous tourist spot.

Located in North East Italy.

Venice is threatened by floods due to the high tides in the Adriatic Sea.

Most severe flooding occurred in 4th November, 1966 6 feet above

M.S.L

In order to protect Venice and its lagoon, MOSE system was adopted.


CAUSES OF FLOOD

Eustatism Rise in sea level

Subsidence Drop in land level

Source : www.people.umass.edu


http://www.people.umass.edu/

WHAT IS ‘MOSE’ SYSTEM?

There are 3 main water inlets to the city Malamocco, Chioggia, Lido.

MOSE system temporary closing of all 3 water inlets.

MOSE ‘Modulo Sperimentale Electromeccanico’ (Experimental

Electro-mechanic Module).

Approved 2002; Work started September 2003; End of work

foreseen in 2016.

Calculated amount is approximately 7 billion Euro.


MOSE SYSTEM (contd..)

MOSE consists of rows of mobile gates at 3 inlets.

These gates separate the lagoon from sea during high tide.

Total of 78 gates Divided into 4 barriers.

Lido inlet widest 2 rows containing 21 and 20 elements linked

by artificial island.

Malamocco inlet row of 19 gates.

Chioggia inlet row of 18 gates.


OBJECTIVE OF MOSE

Protect the lagoon, its town,

villages and inhabitants from

floods.

MOSE can protect the city from

tides up to 3m.

Fig. 2: Venice lagoon and location of 3 water inletsSource : www.technital.it


http://www.technital.it/

OPERATING PRINCIPLE

Under normal tidal conditions rest in their housing structures in sea bed

gates are full of water.

High tide forecasted compressed air is introduced into gates water gets

emptied rotates about the hinge axis rises up separates lagoon from sea.

When tide drops gates are again filled with water return to their housing.


Fig. 3: Operating principle of tidal gatesSource : www.wikipedia.org


http://www.wikipedia.org/

ELEMENTS OF THE BARRIER

GATEGate made of steel.

Hinges (2 for each gate).

Caissons Gate housing made of concrete.

Plant tunnels.

Seabed consolidation elements.


Fig. 4: Typical section of barrier gateSource : www.technital.it



CONSTRUCTION METHOD

Main elements prefabricated in basins away from inlet channels.

Use of temporary or permanent sheet piling reduce the dredging

volumes.

Main concrete structures - precasted in dry basins floated

transported to site sunk into their final position ballasted.


CONCRETE CAISSONS

Caissons are precast proper quality control possible.

Concrete grade more than or equal to 45 MPa high grade.

Proper curing dense and durable concrete.

Minimum cover 50 mm.

Prestressed prevent crack formation during hardening and curing

process.

Durability 100 years of useful life.


Fig. 5 : Concrete caissonsSource : www.enerpac.com


http://www.enerpac.com/

HINGE CONNECTORS

Gate is connected to the foundation two hinge connector assemblies.

Connector assembly consists of a spigot (male part) and a socket (female

part).

Spigot connected to the gate detachable.

Socket is cone shaped embedded in the reinforced concrete elements of the

foundation caisson.

Sockets installed 3 to 4 months after the caisson concreting their correct

position can be controlled.


Fig. 6: Detachable male part of hinge connectorSource : www.technital.it



BARRIER GATES

Gates are 20 m wide length between 18.5 and 29 m thickness 3.6 to 5 m.

Can withstand a differential of up to 1.8 m due to their buoyancy and mass.

For servicing gate can be transported by crane to a platform on the shore

replacement gate is substituted.

If silt deposited on the hinge when a gate has been removed flushing

system actuated prior to engagement of a replacement gate.


Fig. 7 : Barrier gatesSource : www.gettyimages.com


http://www.gettyimages.com/

FACTORS CONTROLLING

CLOSURE OPERATION

Direct rainfall on the lagoon.

Inflow from the surrounding watershed.

Wind set up in the lagoon.

Flow through the three lagoon mouths during the closure operation.

Flow through gaps in the barriers and from overtopping after closure.


CONCLUSION

“Saving Venice” is an ongoing process needs interaction between science

and engineering.

Permanent solution for eradicating fear from the minds of the people.

MOSE system can protect Venice from tides of up to 3 meters.

Once ready, the MOSE system will be the largest dam structure in the world

with each barrier measuring 6500 square feet of area.

MOSE is necessary today, but will become indispensable in the future.


REFERENCES

1. Shubham Sharma, Annu Balhara, Megha Bedi , Experimental Electromechanical Module(MOSE) for flood control in Venice ,

International Journal of Science, Engineering and Technology Research (IJSETR), Volume 5, Issue 1, January 2016

2. E. Engindeniz 1,a, P. Giorgi2,b , MOSE" - A Monumental Construction for the Protection of the Venetian Lagoon , International

Congress on Advances in Welding Science and Technology for Construction, Energy and Transportation Systems (AWST - 2011)

24-25 October 2011, Antalya, Turkey

3. P.T. van Westendorp BSc, O. Koster BSc, M. Reijm BSc, MOSE project Italy , Immersion of the Chioggia Flood Barrier, Caissons,

Proceedings of the World Tunnel Congress 2014 – Tunnels for a better Life. Foz do Iguaçu, Brazil.

4. Yamuna Kaluarachchia*, Maurizio Indirlib, Boyko Ranguelovc, Francesco Romagnolid, The ANDROID case study; Venice and its

territory: existing mitigation options and challenges for the future, 4th International Conference on Building Resilience, Building

Resilience 2014, 8-10 September 2014, Salford Quays, United kingdom


8/14/2016 22Mose Project & Maeslant Project