| 摘要 |
<p>At least part of the length of a tidal enclosure wall (1) is formed by erecting parallel spaced-apart panels (2) upright in the sea bed (B), capped by cap beams (3). The panels are inter-linked by tie bars (5) extending across the wall and through the panels (2), and being secured by high strength couplers (8) on the outer surfaces of the panels (2). Infill (4) is retained between the panels (2). The wall (1) is topped by a compacted fill (6) and top soil (7), which is planted with a suitable vegetation of a variety for best environmental integration. Rock armour (10) is deposited on the outer sides of the panels (2), for additional wall support and preventing scouring. The panels (2) are of pre-cast reinforced concrete material, and have dimensions of 14m high x 6m long x 0.5m wide in this example. Some sections of the wall may include anchor bars (32) extending down through a panel and into the sea bed to provide an additional lateral restraint. The method of constructing a tidal wall is relatively fast because the panels can be erected with established jetting and excavation practices. It is particularly convenient if dredged material can be used for the infill. The wall can form a tidal enclosure when erected along a shore, thus providing for power generation without need to build a barrage across an estuary.</p> |
