FIELD: hydroelectric power engineering; hydraulic scheme construction for leveling surface temperature conditions of upstream and downstream ponds of hydroelectric power plant dam. SUBSTANCE: water is selectively sampled from upstream pond of power-plant dam by placing water intake with spillway upstream of turbine penstock; spillway is provided with horizontal shelf, such a floating-shaft type; wave produced above spillway shelf is displaced towards spillway center by reducing atmospheric pressure above spillway in the region where perimeter is higher than that of wave. EFFECT: facilitated procedure. 3 dwg
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