结合地形因子的雨水管网结构概化方法及应用  

Simplification method of stormwater pipe network combined with terrain factors and its application

作　　者：张傲 马立山[1] 杨国丽[1] 张海平[1] ZHANG Ao;MA Li-shan;YANG Guo-li;ZHANG Hai-ping(Department of Municipal and Environmental Engineering,Hebei University of Architecture,Zhangjiakou 075000,China)

机构地区：[1]河北建筑工程学院市政与环境工程系,河北张家口075000

出　　处：《河北建筑工程学院学报》2020年第1期126-132,共7页Journal of Hebei Institute of Architecture and Civil Engineering

基　　金：河北省教育厅2018年度河北省高等学校科学技术研究项目(科技重点项目)(ZD2018202);河北建筑工程学院研究生创新基金项目(XB201828)。

摘　　要：雨水管网是城市暴雨洪水模拟中的关键因子,但受到模型输入要求及数据获取的限制,管网结构通常被概化考虑。本研究在现有管网概化方法基础上,结合地表模型、土地利用、现状雨水工况等因素对现有概化方法进行优化,与现有概化方法相比发现:(1)雨洪模型中,管网结构概化对整体雨水系统的洪峰时间、洪峰流量影响较大(±20%),对管网系统的洪峰流量与排洪总量影响较大(±50%);(2)地表概化、管网概化均对汇流过程影响较大(±60%),将二者结合可更好的还原实际汇水过程;(3)本研究概化的管网能更好的体现实际管网在排洪过程中的作用,所建雨洪模型的汇流过程与实际汇流过程更相近(±78%)。研究结果为城市雨洪研究中如何概化管网结构使雨洪模型的汇水过程更接近实际提供方法与建议。Rainwater pipe network plays an important role in urban storm water routing.However,it is often simplified in modelling because of data availability and calculation capability.We were optimized lower complexity methods of the drainage pipe network by combining landform model,land use,and Drainage system.And compared to the simulation results of drainage pipe network that using the original method simplify.Results show:(1)In the Urban Stormwater Model,the simplify of the pipe network structure has a great impact(±20%)on the flood peak time and flood peak flow of the overall rainwater system,and it has a great impact(±40%)on the peak flow and total drainage of the pipe network system.(2)Both the landform model restoration and the pipe network structure simplify have a great impact(±60%)on the catchment process.But the impact can be eliminated through the cooperation of the two.(3)The role of our simplified pipe network in the drainage process is closer to the actual pipe network.The rain flood model we built is closer to the actual catchment process(±78%).The research results provide methods and suggestions for how to simplpifition the pipe network structure in the urban rain flood research to make the catchment process of the rain flood model closer to reality.

关 键 词：管网结构概化 城市雨洪模型 地表概化 集水区 

分 类 号：TU992[建筑科学—市政工程]