HYDRAULIC ENERGY DISSIPATING OFFSET STEPPED SPILLWAY

摘要

A spillway (10) for use in a sloped embankment (12) which defines a top (14) and a toe (16). The spillway (10) is adapted to dissipate the kinetic energy of water flowing downwardly from the top of the embankment (14) to the toe (16) thereof in a primary flow direction (PF). The spillway (10) comprises a plurality of building blocks (18, 20) arranged in rows which are stacked upo n each other in a single-like overlap such that the building blocks (18, ) of each row are offset relative to the building blocks (18, 20) of each adjacen t row and a series of steps are defined thereby. The building blocks (18, 20) are sized and configured such that water cascading down the steps defined thereby is caused to flow in three dimensions so as to impart velocity components to the falling water that act at generally right angles relative to the primary flow direction (PF) and generate turbulence which dissipates the kinetic energy of the water.