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随着内河航运事业的发展,河道土坡冲刷日渐加剧,工程上多采用干砌或浆砌块石护坡防冲,或建造浆砌块石直立墙护岸.但这些工程措施耗用大量石料,造价较高.为此,吴江县在六级以下航道上采用了混凝土多孔板护坡,缝中铺以滤料,起排水保土作用,实践证明,效果较好.仅从投资讲,单位面积混凝土多孔板护坡比浆砌块石直立墙节省水泥55%、黄砂75%、石子55%、工时70%,且可完全不用块石,材料运输量也大为减少.
With the development of the inland shipping business, the scouring of the river slope soil is more and more aggravated, dry-mortar or masonry stone slope protection and anti-flushing are often used in the project, or the masonry stone standing wall is rehabilitated. However, these engineering measures consume a large amount of stone, Higher.To this end, Wujiang County in the waterway below the level of the use of concrete perforated plate slope protection, seams in the shop to filter media, play the role of drainage and soil conservation, the practice proved that the effect is better .Investment from speaking, per unit area of concrete porous Slab slope than the masonry stone upright wall saves 55% of cement, yellow sand 75%, 55% of stones, 70% of the time, and can be completely without stones, material transport volume is also greatly reduced.