中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 基于MIKE 11模型的林芝市八一大桥壅水影响研究 高原农业 2022 (2) 173-179
Position: Home > Articles > Research on the Influence of Backwater on Nyingchi Bayi Bridge Based on MIKE 11 Model Journal of Plateau Agriculture 2022 (2) 173-179

基于MIKE 11模型的林芝市八一大桥壅水影响研究

作  者：
朱亚峰;李成林;李晓东
单  位：
西藏农牧学院水利土木工程学院
关键词：
MIKE11;桥梁;壅水影响
摘  要：
跨河桥梁工程建成后，会对河道的防洪能力造成一定影响，西藏地区年代久远的部分桥梁未进行相应的防洪影响评价分析。为保障下游人民的生命财产安全，以林芝市八一大桥作为研究对象，选用MIKE11模型模拟计算了林芝市八一大桥建桥前后壅水的高度、长度以及阻水比，并对目前林芝市八一大桥的行洪安全进行重点分析。结果表明：林芝市八一大桥在50a设计洪水下的阻水比为4.79%，上游最大壅水高度为0.053 m，壅水长度为1.395 km，断面平均流速增加0.08 m/s，允许的最低梁底高程为2 998.22 m，现状梁底高程2 998.50 m，因此，目前林芝市八一大桥的桥梁高程满足河道行洪安全要求。
译  名：
Research on the Influence of Backwater on Nyingchi Bayi Bridge Based on MIKE 11 Model
作  者：
ZHU Yafeng;LI Chenglin;LI Xiaodong;Faculty of Hydraulic and Civil Engineering, Tibet Agriculture and Animal Husbandry College;
关键词：
MIKE11;;bridge;;water impact
摘  要：
After the completion of the bridge project across river, the bridge will have a certain impact on the flood control capacity of the river course. In terms of bridge construction in Tibet,corresponding flood control impact assessment analysis has not been carried out for the old bridge. In order to protect the life and property safety of downstream people, this article took the rebuilt Bayi Bridge as the research object and selected the MIKE11 model to simulate the height,length and water blocking ratio of the congestion before and after the construction of Bayi Bridge, and focused on the analysis of the flood safety on the status quo of the Bayi Bridge.Analysis and calculation results show that, under the flood once in 50 years, the water blocking ratio of the rebuilt Bayi Bridge is 4.79%; the maximum upstream congestion height is 0.053m;the congestion length of the backwater is 1.395km; the average flow rate of the cross section increases by 0.08m/s; the average flow velocity of the section increases by 0.08m/s; the minimum allowable bottom beam elevation is 2998.22m, and the current beam bottom elevation is 2988.50m. Therefore, the current Bayi Bridge's bridge elevation meets the safety of river flooding.

相似文章

导出引用
计量
文章访问数: 0
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46