沙漠高温干旱地区海绵城市雨水调蓄池渗流分析

Seepage Analysis of Rainwater Storage Pond in Sponge City in Desert High Temperature Arid Area

为解决沙漠地区城市所存在的“雨季看海,旱时无水用”的问题,基于常规地区海绵城市的理念,结合某沙漠地区的实际气候地质情况,根据实地N5-1区域土层渗透试验所得到的试验数据进行计算,得出地下深度5~50 m土层的渗透系数,建立若干雨水调蓄池渗流分析方案,并对不同方案进行建模计算。结果表明,在雨水调蓄池周围填充高渗透材料及底部增设垂直回灌井相结合的结构方案可较好解决雨水无法有效渗透到地下含水层中的问题。

In order to solve the problem of “seeing the sea in rainy season and having no water to use in drought” in cities in desert areas, taking Kuwait as an example, based on the concept of sponge city in conventional areas, combined with the actual climatic and geological conditions in desert area, the permeability coefficient of 5-50 m underground layer was calculated according to the experimental data obtained from the soil permeability test in N5-1 region. A number of seepage analysis schemes of rainwater storage tank were established, and different schemes were modeled and calculated. The results show that the combination of filling high permeability material around the rainwater storage tank and adding vertical recharge well at the bottom can solve the problem that rainwater cannot penetrate into the underground aquifer effectively.