| 摘要 |
Apparatus for cleaning a weir or dam comprises a plurality of cleaning modules adapted to be placed astride the crest of the weir and moved along the crest (12, fig 1). The modules each comprises abrasive weir cleaning elements 21 which, in use, contact and scour the surface of the weir (10, fig 1) as the apparatus is pulled along the weir. Each cleaning module preferably comprises first and second plates 17, 20 hingeably connected together by hinge 19 for opening and closing movement about the hinge axis. |
