首页>
外国专利>
A flashboard for a hydraulic structure such as a weir or a spillway on a dam or on a protective embankment
A flashboard for a hydraulic structure such as a weir or a spillway on a dam or on a protective embankment
展开▼
机译:用于水坝或保护性堤岸上的堰或溢洪道等水力结构的防水板
展开▼
页面导航
摘要
著录项
相似文献
摘要
An automatic flashboard (10) comprises a wall (12) installed on a hydraulic structure (11) so as to be capable of passing from an erect position in which it retains a mass of water to a lowered position in which it allows the water to pass substantially without obstruction, and at least one elongate retaining member (13) for holding the wall (12) in its erect position against horizontal thrust (P1) from the mass of water (25). The retaining element (13) extends between the wall (12) and a reaction point to which it is connected by a connection (15) that can be automatically eliminated when the water reaches a certain level. The flashboard (10) also includes a massive element (16) movably mounted on the structure (11) and coupled to the mass of water so as to be in a stable state so long as the water remains below a predetermined level (N) and to pass into an unstable state and to be moved when the water reaches the predetermined level (N), the connection (15) being eliminated by the massive element moving.
展开▼