Online ExclusivesMassive inflatable plugs protect transit tunnels from flooding

Massive inflatable plugs protect transit tunnels from flooding

  • By Dan Heim
  • January 07, 2013
Massive inflatable plugs protect transit tunnels from flooding
Massive inflatable plugs protect transit tunnels from flooding

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Flood Control Disaster Relief Pipe Plug

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Massive inflatable plugs protect transit tunnels from flooding
Three carefully selected layers compose the shell of a Resilient Tunnel Plug (RTP), which needs to be strong, flexible, impermeable, and collapsed into a storage container (usually mounted on a wall of the tunnel) from which it could be remotely deployed. The outermost layer is a fabric webbing of Vectran, a liquid-crystal polymer similar to DuPont’s Kevlar, but with more flexibility. (Photo courtesy of ILC Dover)

Hurricane Sandy devastated the northeast coast in October 2012. Recovery efforts are still underway. Significant damage was caused by the flooding of subway and transit tunnels in New York, many of which will remain closed for months. The storm surge from the hurricane, combined...

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