| 摘要 |
<p>Support elements (2) clamped in the ground, an element forming a wall (3,4) -one each- on the front and rear sides, and earth filling (5) between front and rear walls, feature in a noise-screening wall assembled from prefabricated components. The wall-forming elements are prefabricated steel bar lattice units (7), with support mats (6), already bearing vegetation, stretched on them before assembly. The mat can be of the type as in 2438300 and 2438301. Capillary mats (8,9) of stone wool or other materials, may be laid horizontally and/or vertically in the earth. The side facing the source of noise may be concave. This is compact, and almost or nearly vertical, and can present a green surface from the beginning.</p> |
