城市径流总量控制指标分解及实现路径探索与实践

针对海绵城市径流总量控制目标,提出一种在城市规划体系中控制性详细规划和修建性详细规划阶段分解落实年径流总量控制率的方法。在控制性详细规划阶段分解径流总量控制指标时,分步骤先后确定各项低影响开发措施的面积率和下沉深度;在修建性详细规划阶段,配合径流总量控制指标分解结果,给出适宜的各项低影响开发措施的技术实施导则,以保证各单项指标的正确实施,并以某项目为例介绍了技术实施导则的构建方法。

Exploration and practice regarding decomposition and implementation of urban total runoff control index

Aiming at the total runoff control target of sponge city, a method of decomposing and implementing the annual total runoff volume control rate is proposed in the stage of regulatory plan and constructive-detailed plan of urban planning. In the regulatory stage, the size and subsidence depth of each low impact development measure are determined step by step. In the constructive-detailed plan stage, the technique implementation guidelines fit for each low impact development measurement are suggested to be given in correspondence to the annual runoff volume control target in order to ensure the correct implementation of every single index. A certain project is taken as an example to illustrate the construction method of the technical implementation guidelines.