| 摘要 |
<p>The invention discloses a collapsible dam for restraining and regulating the water flow in canals, basins and similar comprising one or more floodgates (3) having a prevalently vertical development, lined up one next to the other and connected with one another. Each of said floodgates (3) consists of two or more walls (31, 32, 33) arranged one behind the other, slidingly and firmly connected to one another through guiding elements (231, 232, 233) belonging to them, said walls co-operating with thrusting means (5) which drive their mutual sliding motion along a common longitudinal axis (34).</p> |
