重庆市海绵城市年径流总量控制指标解读

Explanation of Total Annual Runoff Volume Control Indexes for Sponge City Development of Chongqing City

重庆市通过对海绵城市建设试点悦来新城的具体情况进行分析,并吸取国外先进雨水管理经验,对悦来新城海绵城市建设指标体系中的年径流总量控制指标进行了深入理解,提出了包含年径流总量控制率(80%)、不外排年径流总量控制率(60%)、年降雨场次控制率相结合的年径流总量控制指标体系。

Based on the situation of Yuelai New Town of Chongqing, a construction pilot of sponge city, and the stormwater management experience of the developed countries, the index control system of total annual runoff volume was proposed. This system comprises the capture ratio of total runoff volume （80%）, the non-dischargeable ratio of total runoff volume （60%） and the capture ratio of specific rain-fall events.