Hydraulic and earth engineering – Earth treatment or control – Impermeabilization
Patent
1987-05-18
1990-04-17
Noland, Tom
Hydraulic and earth engineering
Earth treatment or control
Impermeabilization
521697, 5216914, 405 55, 405128, B65D 9004
Patent
active
049169378
ABSTRACT:
A pressure barrier liner is an assembly of low permeability membranes disposed on above the other. A region is encapsulated between each adjacent pair of membranes. A pressurized fluid such as air or water is introduced into a selected group of the encapsulated regions to pressurize them to a selected pressure or pressures, thereby ensuring that any flow through the membranes or through disruptions in the membranes will be from within the pressurized regions to the regions outside the membranes which encapsulate the pressurized regions, rather than from the fluid storage region above the membranes, through the membranes and into the region beneath the membranes which is to be protected by the linear. Alternatively, a selected group of the encapsulated regions may be depressurized to a selected pressure or pressures, thereby ensuring that any fluid flow through disruptions in the membranes is withdrawn, thus again preventing fluid escapement from the fluid containment region above the membranes, through the membranes and into the region beneath the membranes which is to be protected by the liner.
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Giroud, Geotextiles and Geomembranes Definitions, Properties and Design; Impermeability the Myth and a Rational Approach; Intl. Conf. On Geomembranes; Jun. 20-24, 1984.
Robertson Andrew M.
Van Woudenberg Walter
Noland Tom
Robertson Barrier Systems Corporation
Roskos Joseph W.
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