Hydraulic and earth engineering – Fluid control – treatment – or containment
Patent
1988-11-16
1990-03-06
Taylor, Dennis L.
Hydraulic and earth engineering
Fluid control, treatment, or containment
405 53, 405132, 405150, E21D 900
Patent
active
049061321
ABSTRACT:
A dam for sealing an underground passage extending along an axis is formed with a pair of end ridges themselves formed by--oppositely inclined inner and outer surfaces and at least one middle ridge also formed by a pair of oppositely inclined surfaces. The surface projected parallel to the axis of the outer end-ridge surfaces is larger than the surface projected parallel to the axis of the dam of the inner end-ridge surfaces and the middle ridge is offset outward, that is into the earth bounding the space, of the end ridges by a distance equal to at least the difference between the sizes of the projections.
REFERENCES:
patent: 2459227 (1949-01-01), Kerr
patent: 2787125 (1957-04-01), Benz
patent: 2855757 (1958-10-01), Meade
patent: 2981070 (1961-04-01), Seely
patent: 3184922 (1965-05-01), Anton
patent: 4391552 (1983-07-01), O'Hara
patent: 4417829 (1983-11-01), Berezoutzky
patent: 4818144 (1989-04-01), Mraz
Shaft Sealing for Nuclear Waste Repositories by P. Sitz, Freiberg Mining Academy, Dept. of Mining Technology, German Democratic Republic, 1988.
Hafner Frieder
Kockritz Volker
Oellers Thomas
Sitz Peter
Bergakademie Freiberg
Deilmann-Haniel GmbH
Dubno Herbert
Taylor Dennis L.
Wilford Andrew M.
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