Method and apparatus for impounding fluids

Details Method and apparatus for impounding fluids Method and apparatus for impounding fluids

1990-01-30

1992-01-14

Taylor, Dennis L.

Hydraulic and earth engineering

Drainage or irrigation

Including subsurface moisture barrier

405 53, 405128, B09B 100

Patent

active

050805282

ABSTRACT:
A cavity is excavated in the earth with preferably sloping sidewalls and a first impervious barrier or layer is placed on the surface of the excavation, such as a layer of plastic film or sheet. One or more self-starting pumps are placed at intervals along the slope and embedded in a pervious layer, such as sand, of from one to three feet in thickness. An inner impervious layer which, in a preferred embodiment, is substantially thicker than the outer or first impervious layer is layed over the sand and then a final layer or cap of clay is applied over the inner impervious plastic layer. Any seepage or leakage through the inner impervious layer caused by a tear or imperfection in the plastic, flows down to the self-starting monitoring pumps which, upon sensing the flow, turns itself on. The invention includes sensing the time of operation of the self-monitoring pump to determine the degree of seepage.

REFERENCES:
patent: 1665104 (1928-04-01), Martienssen
patent: 3736754 (1973-06-01), Azalbert
patent: 3908385 (1975-09-01), Daniel et al.
patent: 4194855 (1980-03-01), Egger
patent: 4296884 (1981-10-01), Luebke
patent: 4335978 (1982-06-01), Mutch
patent: 4345581 (1982-08-01), Shacher
patent: 4352601 (1982-10-01), Valiga et al.
patent: 4358221 (1982-11-01), Wickberg
patent: 4362434 (1982-12-01), Valiga et al.

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