Hydraulic and earth engineering – Drainage or irrigation
Patent
1994-04-28
1996-02-20
Taylor, Dennis L.
Hydraulic and earth engineering
Drainage or irrigation
47 101, 405 52, 405267, 405270, F02B 1300
Patent
active
054924340
ABSTRACT:
An agricultural barrier providing a medium for supporting plant life in an arid or semi-arid land region having a ground surface, the barrier being disposed on native soil of the region, the barrier including: a first layer composed of pieces of basalt, the first layer being porous and being in contact with the native soil; a porous second layer of at least one material selected from at least one of sand and gravel, the second layer being less porous than, and overlying, the first layer; and a porous third layer containing soil which favors plant growth, the third layer being less porous than, and overlying, the second layer and having an exposed upper surface, wherein the porosities of the second and third layers differ from one another by an amount which impedes transport of soil from the first layer into the second layer. Soil for the third layer may be provided by washing salinated or contaminated soil with water and using the washed soil for the third layer.
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Adams Melvin R.
Field Jim G.
Taylor Dennis L.
Westinghouse Electric Corporation
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