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Thursday, January 30, 2014

Water Technology: MOSE To Save Venice

MOSE is a fascinating engineering project charged with preventing the city of Venice from sinking by protecting it from floods.


"...Venice is under serious threat due to the rise in sea level and sinking of land at an alarming rate. The MOSE project will protect the Venetian Lagoon from being submerged by the Adriatic Sea and protect the famous city of Venice and the neighbouring areas from flooding. It is expected to be operational by 2014

MOSE, the Italian word for Moses, is an acronym for Modulo Sperimentale Elettromeccanico, which means Experimental Electromechanical Module. The name aptly alludes to the story of Moses parting the Red Sea.

The project will prevent flooding through the installation of 78 mobile gates at three inlets, namely Lido, Malamocco and Chioggia, which will separate the Venetian Lagoon from the Adriatic Sea..."

"A total of 78 mobile gates are being laid at the bottom of the seabed as part of the MOSE project. They are 92ft long, 65ft wide and will weigh 300t. The mobile gates being laid at the bottom of the inlet channel are supported by 125ft long steel and concrete pilings, measuring 500mm in diameter and 20m in length, driven into the lagoon bed.

The floodgates consist of a metal box structure. Compressed air is pumped into the structure when a tide of more than 110m height is expected. The air will rise up the barriers to the surface of the water to block the flow of the tide and prevent water from flowing into the lagoon.

Floodgates are hollowed at the bottom, to allow the blowing of compressed air. They will be filled with water and lowered into the seabed when there is no harm of flooding. The floodgates at each inlet will function independently depending on the force of the tide expected..."

 More at Telegraph.

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