Email Alerts
RSS
Simulation research of urban dam break flood based on MIKE FLOOD model
-
摘要: 大坝安全不仅影响工程效益，还影响人民的生命和财产安全，溃坝洪水模拟可以对水库大坝的失事影响做出评估，对制定应急预案和防洪减灾具有重要意义。以深圳市龙华新区民治水库及下游片区为研究对象，基于MIKE FLOOD将MIKE11模型和MIKE21模型进行动态耦合，对溃坝洪水在下游的演进过程进行仿真模拟。模型采用瞬间溃(瞬间部分溃和瞬间全溃)以及逐渐溃两种溃决方式，分别模拟4种工况下的溃口流量过程线以及下游洪水演进过程。结果表明：瞬间溃的洪峰流量较大，出现在溃坝开始时刻，而逐渐溃的洪峰流量相对较小，出现在渗透破坏变形发展至上部坝体坍塌时刻，之后均随库区水位逐渐降低，下泄流量变小，直至库区水体排空。溃坝洪水对上游地区横岭村附近破坏较大，淹没水深较深。民治河中游段居民和商业区附近洪水流速接近5 m/s，对建筑物有一定破坏力，左侧向南村地势较低，淹没情况最为严重，并且在洪水消退后仍有3 m左右积水。民治河下游地区在洪水消退后也有少量积水。
-
关键词:
- 溃坝洪水 /
- MIKE FLOOD /
- 数值模拟 /
- 淹没水深 /
- 淹没范围
Abstract: The safety of dam not only affects the benefit of the project, but also relates closely to the safety of people's life and property. Dam-break flood simulation can evaluate the impacts of dam-break, and it is of great significance to the making of emergency plans so as to control flood and reduce disasters. Researches are carried out on the dam-break flood developing process in the downstream of the Minzhi reservoir based on the MIKE FLOOD model, which couples MIKE 11 and MIKE 21. By adopting two methods, a sudden dam-break method (for sudden partial dam-break as well as sudden full dam-break) and a gradual dam-break method, simulations of the flow graphs at the breach dam under four operating situations and the flood developing process in the downstream are respectively made in this study. The research results show that the peak flow of the sudden dam-break is larger at the beginning of the dam break, and the gradual dam-break peak flow is relatively small when the deformation of seepage failure develops to the upper part of the dam. And then, as the water level in the reservoir falls gradually, the flow discharge becomes smaller, until the reservoir is emptied. The dam-break flood has a greater destructive power against the upstream area of the Hengling village, where the submerged depth is larger. The flood velocity is up to 5 m/s in the residential and commercial areas of the middle reach of the Minzhi River. The flood has a certain damage to the buildings. The left side of the Xiangnan village is low-lying, the flooding is the most serious, and it still has a waterlogging depth of 3 m after the flood subsidence.-
Key words:
- dam-break flood /
- MIKE FLOOD /
- numerical simulation /
- inundated depth /
- inundated area
-
图 5 不同工况下各特征点水深变化
Figure 5. Water depth change of four feature points under different conditions
图 6 不同工况下各特征点流速变化
Figure 6. Velocity change of four feature points under different conditions
表 1 工况设定
Table 1. Working conditions
工况 工况设定与描述 工况1 由地震、滑坡等突发状况引起的瞬间部分溃+正常水位79.58 m，溃口宽100 m，溃到底部，溃口为梯形 工况2 由地震、滑坡等突发状况引起的瞬间全溃+正常水位79.58 m，溃口宽320 m，溃到底部，溃口为梯形 工况3 由地震、滑坡等突发状况引起的瞬间全溃+校核水位82.36 m，溃口宽320 m，溃到底部，溃口为梯形 工况4 溃口渗透变形破坏为矩形，初始溃口底部高程为死水位69 m，溃口线性发展到宽度为30 m再瞬间部分溃，溃口宽度为100 m+正常蓄水位79.58 m 
下载: 导出CSV
表 2 各工况下洪水流量参数
Table 2. Flood flow parameters under different conditions
工况 水库计算水位/m 溃口宽度/m 最大下泄流量/(m3·s-1) 排水历时/min 工况1 79.58 100 4 220 52 工况2 79.58 320 10 098 22 工况3 82.36 320 13 912 23 工况4 79.58 100(先渗透再破坏) 3 632 68
下载: 导出CSV
-
[1] 林金波, 金生, 丁伟业.基于HydroInfo软件的溃坝水流模拟[J].水利与建筑工程学报, 2015, 13(6): 113-117. http://d.wanfangdata.com.cn/Periodical/fsjs201506021 LIN Jinbo, JIN Sheng, DING Weiye. Dam break water flow simulation based on HydroInfo software[J]. Journal of Water Resources and Architectural Engineering, 2015, 13(6): 113-117.(in Chinese) http://d.wanfangdata.com.cn/Periodical/fsjs201506021 [2] 曹伟. 水库溃坝数值模拟及风险分析[D]. 太原: 太原理工大学, 2015. http://cdmd.cnki.com.cn/Article/CDMD-10112-1015604123.htm CAO Wei. Study on dam-break numerical simulation and risk analysis[D]. Taiyuan: Taiyuan University of Technology, 2015.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10112-1015604123.htm [3] 李云, 李君.溃坝模型试验研究综述[J].水科学进展, 2009, 20(2): 304-310. http://d.wanfangdata.com.cn/Periodical/skxjz200902024 LI Yun, LI Jun. Review of experimental study on dam-break[J]. Advances in Water Science, 2009, 20(2): 304-310.(in Chinese) http://d.wanfangdata.com.cn/Periodical/skxjz200902024 [4] 任海. 溃坝洪水演进数值模拟分析研究[D]. 天津: 天津大学, 2012. http://cdmd.cnki.com.cn/Article/CDMD-10056-1013041374.htm REN Hai. Numerical simulation on the flood evolution process due to dam break[D]. Tianjin: Tianjin University, 2012.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10056-1013041374.htm [5] 吴天蛟, 杨汉波, 李哲, 等.基于MIKE11的三峡库区洪水演进模拟[J].水力发电学报, 2014, 33(2): 51-57. http://d.wanfangdata.com.cn/Periodical/slfdxb201402008 WU Tianjiao, YANG Hanbo, LI Zhe, et al. Modeling of flood routing for Three Gorges reservoir area based on MIKE11[J]. Journal of Hydroelectric Engineering, 2014, 33(2): 51-57.(in Chinese) http://d.wanfangdata.com.cn/Periodical/slfdxb201402008 [6] 丁志雄, 李纪人, 李琳.基于GIS格网模型的洪水淹没分析方法[J].水利学报, 2004(6): 56-60, 67. http://d.wanfangdata.com.cn/Periodical/slxb200406010 DING Zhixiong, LI Jiren, LI Lin. Method for flood submergence analysis based on GIS grid model[J]. Journal of Hydraulic Engineering, 2004(6): 56-60, 67.(in Chinese) http://d.wanfangdata.com.cn/Periodical/slxb200406010 [7] 可友国, 雷宏军, 王永高, 等.尖岗水库溃坝洪水计算与风险评估[J].人民黄河, 2008, 30(7): 36-37. http://d.wanfangdata.com.cn/Periodical/rmhh200807018 KE Youguo, LEI Hongjun, WANG Yonggao, et al. Study on dam-break flood calculation and risk assessment for Jiangang reservoir[J]. Yellow River, 2008, 30(7): 36-37.(in Chinese) http://d.wanfangdata.com.cn/Periodical/rmhh200807018 [8] 郭凤清, 屈寒飞, 曾辉, 等.基于MIKE21 FM模型的蓄洪区洪水演进数值模拟[J].水电能源科学, 2013, 31(5): 34-37. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=sdny201305009&dbname=CJFD&dbcode=CJFQ GUO Fengqing, QU Hanfei, ZENG Hui, et al. Flood routing numerical simulation of flood storage area based on MIKE21 FM model[J]. Water Resources and Power, 2013, 31(5): 34-37.(in Chinese) http://kns.cnki.net/KCMS/detail/detail.aspx?filename=sdny201305009&dbname=CJFD&dbcode=CJFQ [9] SHIRVAN M K M, ALAMATIAN E, BAFTI F G, et al. Flow simulation of dam break and determining flooding zones using MIKE 21[J]. Ecology Environment and Conservation, 2013, 19(3): 679-684. [10] 王世旭. 基于MIKE FLOOD的济南市雨洪模拟及其应用研究[D]. 济南: 山东师范大学, 2015. http://cdmd.cnki.com.cn/Article/CDMD-10445-1015600159.htm WANG Shixu. The study of simulation and application of rainwater and flood based on MIKE FLOOD model in Jinan City[D]. Jinan: Shandong Normal University, 2015.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10445-1015600159.htm [11] 魏凯, 梁忠民, 王军.基于MIKE21的濛洼蓄滞洪区洪水演算模拟[J].南水北调与水利科技, 2013, 11(6): 16-19. http://d.wanfangdata.com.cn/Periodical/nsbdyslkj201306004 WEI Kai, LIANG Zhongmin, WANG Jun. Flood routing simulation of MengWa detention basin based on MIKE21[J]. South-to-North Water Transfers and Water Science and Technology, 2013, 11(6): 16-19.(in Chinese) http://d.wanfangdata.com.cn/Periodical/nsbdyslkj201306004 [12] 喻海军. 城市洪涝数值模拟技术研究[D]. 广州: 华南理工大学, 2015. http://cdmd.cnki.com.cn/Article/CDMD-10561-1015986910.htm YU Haijun. Research on numerical simulation technology of urban floods[D]. Guangzhou: South China University of Technology, 2015.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10561-1015986910.htm [13] 衣秀勇. DHI MIKE FLOOD洪水模拟技术应用与研究[M].北京:中国水利水电出版社, 2014: 59-61. YI Xiuyong. Application and research of flood simulation technology through DHI MIKE FLOOD[M]. Beijing: China Water and Power Press, 2014: 59-61.(in Chinese) [14] 落全富, 安莉娜.青山水库溃坝洪水模拟计算[J].浙江水利科技, 2010(2): 17-19. http://d.wanfangdata.com.cn/Periodical/zjslkj201002007 LUO Quanfu, AN Lina. Simulated calculation of dam break flood for Qingshan reservoir[J]. Zhejiang Hydrotechnics, 2010(2): 17-19.(in Chinese) http://d.wanfangdata.com.cn/Periodical/zjslkj201002007 [15] 周远方. 大南川水库溃坝的数值模拟研究[D]. 长沙: 长沙理工大学, 2010. http://cdmd.cnki.com.cn/Article/CDMD-10536-1011025696.htm ZHOU Yuanfang. Numerical simulation study on dam-break flow Dananchuan reservoir[D]. Changsha: Changsha University of Science and Technology, 2010.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10536-1011025696.htm [16] 赖成光. 城市地区水库溃坝洪水演进数值模拟研究[D]. 广州: 华南理工大学, 2013. http://cdmd.cnki.com.cn/Article/CDMD-10561-1013319909.htm LAI Chengguang. Study on numerical simulation of dam-break flood evolution in urban area[D]. Guangzhou: South China University of Technology, 2013.(in Chinese) http://cdmd.cnki.com.cn/Article/CDMD-10561-1013319909.htm -
点击查看大图
图(6) / 表 (2)
计量
- 文章访问数: 1491
- HTML全文浏览量: 38
- PDF下载量: 823
- 被引次数: 0
