半干旱区生态水箱式道路雨洪资源蓄集利用系统技术研究

目的]对生态水箱式道路雨洪资源蓄集利用系统技术进行研究,为实现道路雨水收集再利用、有效提高收集雨水水质,也为绿化植物的生长提供优良的水源目标。方法]生态水箱式道路雨洪资源蓄集利用系统采用聚丙烯(PP)塑料雨水收集模块充分储存水源,为后续系统的"自由呼吸"提供基础。PP雨水收集模块的孔隙率为90%~95%,并采取双层土工布和防水膜的分层布设进行防渗,种植土和绿化植物设施采用30cm的种植土厚度,保证了雨水资源的集蓄和供给的动态平衡。结果]生态水箱系统具有水资源集蓄、供给动态平衡调整功能和截污功能,可高效集蓄路面优质雨水和有效控制雨水对土壤及地下水的污染。结论]该系统为雨水的高效再利用提供了条件和新方法,为区域雨洪资源高效管理利用提供了新途径。

Technical Research of Ecological Water Tank Catchment and Utilization System of Road Rainwater Resources in Semi-arid Region

Objective] Ecological water tank catchment and utilization system of road rainwater resources was demonstrated to give some guidances of the collection and recycling of road rainwater and of effectively improving the collection rainwater quality.This was also helpful for providing excellent water sources for greening plant growth.Methods] The system's was used as water storage facilities,which can provide the basis for follow-up system of "free breathing".The porosity of polypropylene plastic rainwater collection module was 90％ ～95 ％.And the impervious facilities laid stratified double geotextile and waterproof membrane.In which,30 cm thickness filled-in soil can sufficiently ensure the dynamic equilibrium between catchment and supply of the rainwater resources.Results] Ecological water tank system has the functions of dynamic equilibrium adjustment of water resourses catchment and supply,and sewage interception as well.It can efficiently collect high-quality rainwater on the road,and effectively control the pollution of soil and groundwater caused by rainwater.Conclusion] This system can also provided the conditions and new approaches for efficient recycling of rainwater resources and provides a new way for efficient management and use of regional rainwater resources.