HYDRAULIC ENERGY DISSIPATING OFFSET STEPPED SPILLWAY

摘要

A spillway (10) for use in a sloped embankment (12) which defines a top (1it)and a toe (16). The spillway (10) is adapted todissipate the kinetic energy of water flowing downwardly from the top of theembankment (14) to the toe (16) thereof in a primary flowdirection (PF). The spillway (10) comprises a plurality of building blocks(18, 20) arranged in rows which are stacked upon each other ina single-like overlap such that the building blocks (18, ) of each row areoffset relative to the building blocks (18, 20) of each adjacentrow and a series of steps are defined thereby. The building blocks (18, 20)are sized and configured such that water cascading down thesteps defined thereby is caused to flow in three dimensions so as to impartvelocity components to the falling water that act at generallyright angles relative to the primary flow direction (PF) and generateturbulence which dissipates the kinetic energy of the water.