Impurifying ecological bank-protection combined system

斜坡式变渗径面源截留净化生态护岸组合系统

Abstract

The invention relates to revetment combination system that has cutoff purifying function to the river rainfall runoff surface contaminating material. It sets non-sand concrete curbstone at the intersection of road and bank slope, a catch water channel is set at one side of intersection road, where coarse sand bedding is paved. Crushed stones are filled in the channel, and the top of channel is sealed by non-sand concrete. On the band slope toward water side paves coarse sand, crushed stone of different thickness, and ecology brick. Cement laid stone masonry breast wall is set at basal slope, and growing plant at the bank slope. It increases the residence time for runoff in the system and takes purification to it.
本发明涉及对河流降雨径流面源污染物质具有截留净化效果的护岸组合系统。本发明在道路与岸坡相交处设置无砂砼路牙,在其交界处道路一侧设置集水槽,槽底铺设粗砂垫层,槽内填充碎石,槽顶以无砂砼密封,在岸坡迎水一侧依次铺设粗砂、不同厚度的碎石、生态砖,坡脚设置浆砌石挡土墙,岸坡上种植植物。解决了当降雨径流流量较大时,流经坡面时停留时间过短,污染物质无法得到有效去除,截留净化效果非常有限的缺陷。本发明通过集水槽、碎石层、植物的多层次系统,对于降雨径流流量较大时,径流一部分以渗流方式在碎石层中流动,另一部分溢流出以表面流方式在坡面流动,通过变渗径方式增加了径流在系统中的停留时间,对其截留净化。

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