Abstract: A tunnel barrier system for lining the interior surface of a tunnel cavity includes a first panel in facing engagement with and affixed to a first impermeable membrane. A second panel is in facing engagement with and is affixed to a second impermeable membrane. The second panel is positioned adjacent to but spaced apart from the first panel to form a cavity between the panels. A filling material is positioned within the cavity. A third impermeable membrane is in facing engagement with both the first and second impermeable membranes and extends across the cavity such that the first panel, the second panel and the cavity are rendered airtight and watertight.
Type:
Grant
Filed:
August 12, 1993
Date of Patent:
August 8, 1995
Assignee:
Carlisle Coatings & Water Proofing, Incorporated