Lo stato idrologico del sottosuolo nelle aree a ridosso dei cantieri

TL;DRAbstract

In the Mo.S.E. project for the protection of Venice against exceptional high tides, the development of Treporti (Lido's inlet) and Ca' Roman (Chioggia's inlet) harbours in the Venice Lagoon required the realization of two provisional sea basins (cofferdams) which will be drained to provide access to the building sites, positioned below the sea level. The dewatering systems installed on the perimeter of the basins, which have been active since 2005 in Punta Sabbioni and since 2007 in Ca' Roman, permitted to dry up the cofferdams, where the concrete lodging caissons of mobile barriers are to be built. Two groundwater monitoring systems have been emplaced to measure hydraulic heads in the first and second aquifer levels, in order to monitor the effects of the dewatering systems in the proximity of the constructions sites. The monitoring network is composed of more than twenty piezometers intercepting both aquifer layers in Punta Sabbioni (Lido's inlet) and two in Ca' Roman (Chioggia's inl

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