HUANGTao,SHIDe-wen,WANGQiang,et al.Simulation of Improvement Effect of Looped Drainage Network on Regional Drainage and Waterlogging Prevention Safety[J].China Water & Wastewater,2023,39(1):111-117.
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Simulation of Improvement Effect of Looped Drainage Network on Regional Drainage and Waterlogging Prevention Safety

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第1期 Page: 111-117 Column: Date of publication: 2023-01-01
Author(s):
HUANG　Tao1;  SHI　De-wen1;  WANG　Qiang2;  LIU　Zi-long2;  TIAN　Zheng2;  FENG　Xu1;  YANG　Dong-fang2;  WANG　Jian-long3;  JIANG　Qi-gui1
（1. Capital Urban Planning & Design Consulting Development Co. Ltd.， Beijing 100031， China； 2. Beijing Municipal Institute of City Planning and Design， Beijing 100045， China； 3. Key Laboratory of Urban Stormwater System and Water Environment ， Beijing University of Civil Engineering and Architecture， Beijing 100044， China）
Keywords:
looped drainage network;  drainage and waterlogging prevention;  MIKE FLOOD;  resilience of drainage system
Abstract:
According to the terrain and drainage network layout characteristics of northern plain regions, this paper proposed a scheme to improve regional drainage and waterlogging prevention capacity by constructing looped drainage network, and the improvement of regional drainage and waterlogging safety after branched drainage network being changed to looped drainage network was systematically analyzed by using MIKE FLOOD model. Compared with the branched network, the reduction rate of average depth ratio of looped network was 5.43%-14.29%, the reduction rate of the depth ratio standard deviation was 25.00%-35.71%, the reduction rate of the overload pipe section was 33.33%-66.67%, the reduction rate of the ponded water volume from the pipe network into the two-dimensional ground was 26.16%-38.13%, and the maximum reduction rate of ponding points reached 50%, indicating that the looped network effectively increased the space utilization rate of drainage network, improved the operation status of pipe network, decreased the ponding points, and significantly reduced the ponding risk. The construction of looped drainage network improved the regional water security capability, and provided a reference for the upgrading and reconstruction of regional drainage network and the optimization design of drainage system, especially for the improvement of drainage and waterlogging prevention capacity in built?up areas with relatively flat terrain.
Last Update: 2023-01-01