基于HEC-RAS的过水桥涵壅水分析研究  

Study and Analysis on Backwater of Bridge Culverts based on HEC-RAS

作　　者：陈至立 张赞 安占刚 曹绮欣 薛树红 葛杰 冯家豪 CHEN Zhili;ZHANG Zan;AN Zhangang;CAO Qixin;XUE Shuhong;GE Jie;FENG Jiahao(PowerChina Northwest Engineering Corporation Limited,Xi'an 710065,China;Yellow River Water Conservancy and Hydropower Development Group Co.,Ltd.,Jiyuan 459017,China;Flood Disaster Emergency Intelligent Decision-Making Innovation Studio,Xi'an 710065,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,西安710065 [2]黄河水利水电开发集团有限公司,河南济源459017 [3]洪涝灾害应急智慧决策创新工作室,西安710065

出　　处：《西北水电》2023年第5期31-35,共5页Northwest Hydropower

基　　金：中国电力建设股份有限公司重大科技项目(DJ-ZDXM-2022-41).

摘　　要：为研究过水桥涵在河道防洪中的壅水高度影响,以陕西省榆林市靖边县马营沟流域为例,采用涵洞及堰流联合试算方法和HEC-RAS模型数值模拟方法,分别计算该流域4座过水桥涵的壅水水位,并进行成果合理性分析及对比。结果表明:1号桥涵壅水两种方法计算结果一致,2号桥涵壅水采用涵洞及堰流联合试算方法比HEC-RAS模型模拟结果高0.02 m,3号桥涵壅水采用涵洞及堰流联合试算方法比HEC-RAS模型模拟结果低0.01 m,4号桥涵壅水采用涵洞及堰流联合试算方法比HEC-RAS模型模拟结果稍低0.01 m,两种方法计算过水桥涵壅水的结果相差较小,且均合理实用。在项目设计过程中,可根据实际情况任选一种,或者采用两种方法分别计算对比,以增加工程设计的精度。In order to study the influence of backwater height of overflow bridges and culverts on river flood control,taking the Mayinggou watershed in Jingbian County,Yulin City,Shaanxi Province as an example,the backwater levels of four overflow bridges and culverts in the watershed are calculated by the joint trial calculation method of culverts and weirs and the numerical simulation method of HEC-RAS model,and the rationality of the results is analyzed and compared.The results show that the calculation results of the two methods for backwater of Bridge and Culvert 1 is consistent;the joint calculation method of culvert and weir flow for backwater of Bridge and Culvert 2 is 0.02 m higher than the simulation results of HEC-RAS model,the joint calculation method of culvert and weir flow for backwater of Bridge and Culvert 3 is 0.01 m lower than the simulation results of HEC-RAS model,and the joint calculation method of culvert and weir flow for backwater of Bridge and Culvert 4 is slightly 0.01 m lower than the simulation results of HEC-RAS model.It can be seen that the difference in the results of the two methods in calculating the backwater of overflow bridges and culverts is small,and both methods are reasonable and practical.During the project design process,both methods can be chosen in accordance with the actual situation,or two methods can be used to calculate and compare separately to increase the accuracy of engineering design.

关 键 词：HEC-RAS 数值模拟 过水桥涵 联合试算 壅水分析 

分 类 号：TV87[水利工程—水利水电工程]