Giant seals help protect St. Petersburg from flooding
Nov 06, 2007
St Petersburg is regarded as Russia’s cultural capital. To protect its people and cultural treasures from flooding, a 25-kilometer storm flood barrier is being constructed. An essential part of this structure are 40 meter-wide, seven meter-high seals, from Trelleborg.
St. Petersburg is situated at the point where the Neva River flows into the Gulf of Finland, so when strong winds in the gulf blow eastwards, they act as a barrier against the Neva flowing westwards. As a result, the waters can rise in only a few hours, threatening St. Petersburg’s 4.6 million people and its priceless historical sites, such as the world-renowned Hermitage Museum.
This is the first time that Omega seals have been used in a tunnel of the type being constructed in St. Petersburg, which is a “cutand-cover” tunnel, whereby a hole is dug, the tunnel is constructed bit by bit, and then covered with sand. What is also unique is that the tunnel will be provided with a double sealing system, an outer Omega seal and an inner one, as a back-up. Omega seals can withstand high water pressure in combination with relatively large displacements in all three directions. They can also withstand temperatures ranging from minus 30 degrees Celsius to plus 70 degrees Celsius.
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Contact
Trelleborg AB
231 22 Trelleborg
Phone:
+46 410 670 00
Fax:
+46 410 427 63