表面流人工湿地Delft3D水动力数值模拟与空间形态设计研究  

Delft3D Hydrodynamic Numerical Simulation and Spatial and Configurational Design of Free Water Surface Constructed Wetland

作　　者：汪洁琼 王蓉蓉 宋昊洋 王敏[2,3] WANG Jieqiong;WANG Rongrong;SONG Haoyang;WANG Min

机构地区：[1]同济大学建筑与城市规划学院建成环境技术中心,上海200092 [2]同济大学建筑与城市规划学院景观学系,上海200092 [3]高密度人居环境生态与节能教育部重点实验室(同济大学)水绿生态智能分实验中心(Eco-SMART LAB) [4]同济大学建筑与城市规划学院,上海200092

出　　处：《中国园林》2023年第3期40-45,共6页Chinese Landscape Architecture

基　　金：国家自然科学基金面上项目“基于多重价值协同的城市绿地空间格局优化机制:以上海大都市圈为例”(编号52178053);上海科委重点研发项目“基于生物多样性的城市困难立地高质量园林绿化智能技术及示范”(编号22dz1202200)共同资助。

摘　　要：表面流人工湿地作为一种典型的城市绿色基础设施,在风景园林设计中的应用场景不断增加,但当前其设计过程中存在水体净化效能与空间形态营造较难兼顾的技术瓶颈。从学科交叉融合的角度,以江苏省太仓市某人工湿地净化工程中的表流湿地为例,利用Delft3D软件,通过模拟表流湿地12个方案中“岛屿”微地形或挡墙等不同要素组合下的水力效率(λ)和流速“死区”分布,分析不同方案的整体净化效能高低与内部水动力异质性特征,从而得到影响表流湿地水力特征与水体净化效能的关键空间形态要素,并提出相应的表流湿地空间形态优化策略,为表流湿地的设计提供循证依据。通过数字赋能有助于提高表流湿地实践的科学性与合理性。As a typical type of urban green infrastructure,free water surface constructed wetland(FWSCW)has an increasing number of application scenarios in landscape design.But there is a technical bottleneck between water purification efficiency and spatial form building in the design process.From the perspective of interdisciplinary integration,taking the FWSCW in a water purification project of in Taicang City of Jiangsu Province as an example,using Delft3D software,through simulating the hydraulic efficiency(λ)and"dead zone"distribution of different elements combination such as"island"finer-scaled landform or retaining wall in 12 design schemes,the different overall purification efficiency and internal hydrodynamic heterogeneity characteristics were described,so as to obtain the key spatial morphological elements affecting the hydraulic characteristics and water purification efficiency of FWSCW.The corresponding strategies for optimizing the spatial morphology of surface flow wetlands were proposed to provide evidence-based basis for the design of FWSCW.Digital empowerment was helpful to improve the scientificity and rationality of surface flow wetland practice.

关 键 词：风景园林 人工湿地 表流湿地 Delft3D 数值模拟 空间形态 水力效率 

分 类 号：TU986[建筑科学—城市规划与设计]