下凹式绿地蓄渗能力及其影响因素分析

下凹式绿地是一种生态型的雨水渗透设施，对雨水径流有渗透、蓄积、利用有重要作用。是城市雨洪利用的重要措施之一。通过对下凹式绿地雨水量平衡及其影响因素的分析和不同设计参数的下凹式绿地雨水渗透能力的计算表明：下凹式绿地下凹深度、下凹式绿地的面积负荷率、土壤温度入渗速率和设计暴雨重现期和植物的耐淹时间是影响雨水蓄渗的主要因素。

Study on Rain Storage and Infiltration of Sunken Lawn and Its Influencing Factors

Low elevation greenbelt is an ecological facility of rainwater infiltration,which plays a significant role in rainwater permeating,storing and utilization.It is one of effective measures of rainwater use in town.The analysis of the water balance of the sunken lawn and its influencing factors and the calculation of the rain infiltration capacity of the sunken lawn with different design parameters show that the critical parameters include depth,area-load proportion,soil temperature,infiltration speed,the design storm recurrence period and the submerged duration of the plant.