ROCK FILL DAM WITH ASPHALT-CONCRETE DIAPHRAGM Russian patent published in 2012 - IPC E02B7/06 E02B3/16 

FIELD: construction.

SUBSTANCE: proposed composite diaphragm 1 is arranged in the 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 to develop a cementation curtain 5. The upper 6 and lower 7 diaphragms are formed with metal sheets 8. External faces of metal sheets 8 are coated with a waterproof film 9. Metal sheets 8 are installed one onto the other 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 metal sheets 8 are welded to each other. The film 9 of adjacent sheets is connected to each other to form a solid waterproof contour. Connection of the film 9 in seams 10 may be arranged with adhesion, welding or overlapping of seams 10 with an additional film, and its adhesion to the film 9. Along the length of the upper 6 and lower 7 diaphragms there are vertical expansion joints, for instance, in the form of a semicircle. The inner cavity 12 between the upper 6 and the lower 7 diaphragms is filled with asphalt concrete. Metal sheets 8 of the upper and lower 7 diaphragms may be joined to each other by links 11, for instance, reinforcement joints.

EFFECT: erection of a high rock fill dam provides for high reliability of dam operation.

2 cl, 2 dwg