耦合地表水动力过程的管网排水模型研究  

Research on drainage model of pipe network coupled with ground surface hydrodynamic process

作　　者：王学冬 侯精明 杨东[1] 同玉 李继成[2] 樊超 贾学仕 王兆峰 WANG Xue-dong;HOU Jing-ming;YANG Dong;TONG Yu;LI Ji-cheng;FAN Chao;JIA Xue-shi;WANG Zhao-feng(State Key laboratory of Evo-hydraulics in Northwest Arid Region of China,Xi'an University of Technology,Xi'an 710048,China;China Power Construction Group Northwest Survey and Design Institute Co.,Ltd.,Xi'an710065,China;China Planning Institute planning and design company,Beijing 100000,China;Qingyang sponge city construction management office,Qingyang 745099,China)

机构地区：[1]西安理工大学省部共建西北旱区生态水利国家重点实验室,西安710048 [2]中国电建集团西北勘测设计研究院有限公司,西安710065 [3]中规院规划设计公司,北京100044 [4]庆阳市海绵城市建设管理办公室,庆阳745099

出　　处：《水动力学研究与进展（A辑）》2021年第4期481-488,共8页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金(52079106)。

摘　　要：现今防洪排涝已成为城市发展亟需解决的重要问题之一,排水管网是支撑城市防洪排涝的重要基础设施,准确模拟其不同条件下的排水过程有助于检验管网排水能力。该文建立了地表水动力和排水管网的耦合模型,并采用了树状和环状两种典型管网结构作为验证算例,探明模型的计算效率及其适用性。模拟结果表明,所开发的模型对树状管网的流量过程模拟效果最好,环状管网次之。树状管网模拟结果与文献值的相关系数R^(2)为0.99,NSE为0.98,峰值流量计算误差小于1%;环状管网模拟的R^(2)为0.96,NSE大于0.9,环状管网模拟结果优于文献值。该文同时将模型应用于某小区排口流过程线的计算,模拟的三场降雨排口流量过程NSE值分别为0.79、0.92和0.72,表明该模型能够良好运用于城市管网排水过程的模拟。Nowadays,the problem of flood control and drainage has become one of the important measures to be solved in urban development.Drainage network is an important infrastructure to support urban flood control and drainage.Accurate simulation of the drainage process under different conditions is helpful to test the drainage capacity of the network.In this paper,the coupling model of surface water dynamics and drainage pipe ne twork is established,and two typical pipe network structures,tree and ring,are used to verify the calculation efficiency and app licability of the model.The simulation results show that the developed model has the best simulation effect on the flow proces s of tree pipe network,followed by ring pipe network.The correlation coefficient R^(2) of tree network simulation results and litera ture value is 0.99,NSE is 0.98,peak flow calculation error is less than 1%;R^(2) of ring network simulation is 0.96,NSE is grea ter than 0.9,ring network simulation results are better than literature value.At the same time,the model is applied to the calcula tion of discharge hydrograph at the outlet of a residential area,and the NSE values of three simulated rainfall discharge processes are 0.79,0.92 and 0.72 respectively,which shows that the model can be well used to simulate the drainage process of urban pip e network.

关 键 词：排水管网 水动力模型 扩散波 数值模拟 

分 类 号：TU992[建筑科学—市政工程]