高速公路中央分隔带绿化渗灌技术研究

Research on a subsurface drip irrigation system of a highway median strip

结合国家3号高速公路枣庄段中央分隔带绿化灌溉工程,试验研究了渗灌技术在高速公路中央分隔带绿化灌溉中的应用问题。进行了室内微孔渗管渗水性能试验和渗灌条件下土壤水分运动实体模型试验,研究了渗管出流规律和土壤水分运动规律,并给出了渗灌设计主要参数。研究结果表明,对于平均流量为2.5 L/h的渗管,适宜的最低水头为6 m,渗管长度为50 m;对于平均流量为6.0 L/h的渗管,适宜的最低水头为5 m,渗管长度为35 m;渗管的埋深为45 cm,双排布设间距为1 m。

Based on a median strip irrigation project at the Zaozhuang section of National Highway No.3,the application problem of irrigation technology in highway median strip irrigation was experimentally studied.Dripping performance of micro-porous pipe laboratory test and the physical model test of soil water movement under the irrigation condition were put forth.The dripping law of the pipe and the movement of soil water were studied in these experiments.And then,the irrigation design parameters were given.In consideration of the flow rate,the stability and the limited time,the proper water stress was 6m and the proper length of the rubber pipe was 50m for the 2.5 L/h pipes,the proper water stress was 5 m and the proper length of the rubber pipe was 35 m for the 6.0 L/h ones.The proper depth of dripping pipes was 45 cm,and the proper layout spacing was 1 m.