城市洪涝智治中数字孪生技术的应用——以滨江区数智治水系统为例

Application of digital twin in urban flfl ood intelligent management——A case study of intelligence water management system in Binjiang district

摘要:

针对城市洪涝防治中的涝前感知精度不足、涝时处置效率不高、涝后分析深度不够等难点，基于数字孪生技术建立包含孪生数据映射、数学模型推演、虚实交互防治、智能服务联动等模块的滨江区数智治水系统，用于滨江区洪涝智治。结合涉水监管数据，构建物理滨江区，包括地形地貌、河道水体、雨水管网、排水设施、监测设备、积水点在内的孪生数据映射，构建虚拟滨江区的模型化表达，完成洪涝发生事前、事中、事后阶段物理滨江区与虚拟滨江区之间的双向映射和交互防治，并对滨江区洪涝过程进行预演，实现对滨江区洪涝灾害的自动监测预警，形成洪涝应急处理预案。系统上线以来，滨江区洪涝处置耗时缩短 50%，排水效能有明显提升，严重积水点减少 60% 以上，能够推动跨部门协同治理，提升城市洪涝防治能力。

Abstract:

In view of the diffi culties in urban fl ood prevention and control，such as insuffi cient sensing accuracy beforefl ood，low response effi ciency during fl ood，and insuffi cient analysis after fl ood，the intelligence water managementsystem for Binjiang district is proposed based on digital twin technology，which includes four modules of digitaltwin data mapping，mathematical model simulation，virtual and real interaction prevention and intelligent servicelinkage. Combined with monitoring data，the twin data mapping of physical features including topography，surfacewater，rainwater pipe network，drainage facilities，monitoring equipment，and inundation hot spots is developed.Subsequently，the virtual model of Binjiang district is built. The mutual mapping and interaction between physical andvirtual entity during the entire fl ood occurrence are implemented. A rehearsal of the fl ood process in Binjiang districtis simulated，which realizes the functions of automatic monitoring and warning，and drafting the emergency responseplan for fl ood disaster. Since the system is published online，fl ood response time in Binjiang district has been reducedby 50%，the drainage effi ciency has also been signifi cantly improved，and the number of serious inundation hot spotshas been reduced by more than 60%. Collaborative trans-departmental governance can be promoted，and urban fl oodprevention and control capabilities can be improved.