摘要
在"海绵城市"低影响开发雨水系统构建的理论基础上,以石家庄市滨水生态公园为例,针对石家庄市2016年"7.19"特大暴雨的情况,对石家庄首次山体绿化的行洪景观建设——植草沟进行初步的应用效果分析。结合山体坡度陡缓及地形走向,沿山体坡面合理设置植草沟,这样做不仅可以减缓流速、改变水流方向、增加下渗量,而且可以减少地表径流,护坡固土、防止水土流失。现场的植草沟根据地形与场地情况做曲线布设,宽窄也可自由变化,平缓段结合卵石及滨水植被形成"旱溪"形式,既可引导水流至渗水塘,又能增加园内景观。且植草沟铺设黑麦草植生带,能起到固土护坡、阻挡雨水、降低水流速度的作用。
Based on the theory of building low-impact-development rainwater systems of ＂sponge city＂,in the context of the rainstorm on July 19,2016,this paper conducted a preliminary analysis on the application result of grassed swales as a flooddischarge landscape constructionduring the first mountain forestation in Shijiazhuang.A case study was conduct ed on Shijiazhuang Waterfront Ecological Park.To properly set up grassed swales along the mountain slopewith consideration to the inclination of the slope and lay of the land can slow down the flow rate,change flow direction,increase infiltration,reduce surface runoff,and thus conserve the slope and prevent soil erosion.The grassed swales were laid out with variable width in a curved manner in accordance with the landform and site conditions.The gradual section was combined withpebbles and waterfront vegetation,forming a＂dry stream＂,which can guide the water flow to soakaway ponds and improve the landscape of the park.The grassed swales were also paved with ryegrassnursery strips,which can conserve the soil,prevent rainwater,and reduce the water velocity.
作者
陈敬宣
CHEN Jing-xuan(Shijiazhuang Landscaping Administrative Office ,Shijiazhuang,Hebei 050000, Chin)
出处
《河北林业科技》
2016年第6期1-4,共4页
Journal of Hebei Forestry Science and Technology
关键词
海绵城市
植草沟
水土流失
Sponge city
Grassed swales
Prevention of soil erosion
