ROCK-FILL DAM WITH ASPHALT-CONCRETE DIAPHRAGM Russian patent published in 2012 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: invention relates to hydrotechnical construction and may be used to erect high rock-fill dams. A composite diaphragm 1 is arranged in a central part of a high rock-fill dam. Between side prisms 2 from a rock mass and a diaphragm 1 there are transition zones 3. In the diaphragm base 1 there is a concrete foundation 4 deepened into a rock base. In the concrete foundation 4 there is a gallery arranged for performance of a cementation curtain 5. The upper 6 and lower 7 diaphragms are formed by reinforced concrete boards 8. External faces of boards 8 are covered with an air impermeable synthetic film 9. Boards 8 are installed one onto another and adjoining each other. The film 9 may be arranged in the form of a geomembrane from polymer materials, for instance, a PVC film, etc. In horizontal and vertical seams 10 the film 9 is connected to each other with formation of a solid water impermeable contour. Connection of the film 9 in seams 10 may be arranged by adhesion, welding or overlapping of seams 10 with an additional film, and its adhesion to the film 9. The inner cavity 11 between the upper 6 and lower 7 diaphragms is filled with asphalt concrete. Prefabricated boards 8 of the upper 6 and lower 7 diaphragms may be combined to each other by joints 13, for instance, reinforcement links.

EFFECT: invention provides for high reliability of dam operation.

3 dwg