哈尔滨市群力区绿园居住小区雨水资源潜力研究

Study on the Construction of Water Saving Green Space in Residential District

随着海绵城市理念的提出,居住小区合理利用雨水资源对节约城市淡水资源具有重要意义。该研究以哈尔滨市群力新区绿园小区为研究案例,采用水量平衡分析法,研究并计算分析该小区雨水资源潜力,并综合评价该小区利用雨水资源的可行性,以期为小区设计可利用雨水资源的绿地景观奠定基础,为实现以利用雨水资源为节水前提的生态理念提供理论依据。结果表明:该小区年可收集雨水量为13 696.41m3,雨水资源潜力巨大;5—10月间绿地内植物需水总量为7 175.63m3,雨水资源总量远高于植物需水量;计算出小区蓄水池总容量为152 m3,可最大限度收集雨水;该小区雨水利用率在51.44%~60.79%。

As the sponge city concept being proposed,it produced great significance to saving the city′s freshwater resources that the rainwater resource was rationally utilized in the residence community.The Green Garden residence community of Qunli district of Harbin city was used as an example by adopting the water balance analysis method,the potential of the rainwater was studied through calculation and analysis,and the feasibility of utilizing the rain water resource in this community was comprehensively evaluated.The conclusion laid the foundation for designing the green landscape with the rainwater resource and provided the theoretical basis for the ecological concept of realizing water saving according to the rainwater resource in the community.The results showed that the annual raincollecting amount in this area was 13 696.41 m3 and the rainwater resource had huge potential.The total water demand for the plants in the green space,was 7 175.63 m3 from May to October.Each year,which was much lower than total rain water resource.The total capacity of the reservoir was152 m3 through the calculation so as to collect the rain water to the maximum with the rain water utilization from 51.44%to 60.79%.