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Study on hydrodynamic numerical simulation of drift reach
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摘要: 为了给水利枢纽下游河道整治规划提供技术支撑并提出漂流供水方案，采用二维全水动力模型，对水利枢纽下游河道整治前后不同泄水工况进行模拟。以三河口水利枢纽下游河道为例，河道两侧风景优美且暗礁险滩较少，河床高程为514~526 m，河床砂卵石层厚度5~10 m，为实施漂流项目提供了保证，结合上游水利枢纽调度运行情况，计算了各个泄水工况下不同断面的水力要素及相关统计信息，并根据计算结果提出河道整治及漂流供水方案。结果表明，该二维水动力模型能高效高精度对水利枢纽下游河道进行不同泄水工况下的模拟，为河道水上娱乐设施规划提供了有效的技术支撑，并从节约水资源及减少工程施工量的角度建议对河道进行6 m疏浚，在此工况下上游水利枢纽仅需泄水4 m3/s，此时河床断面最大水深最小值为0.50 m，断面水面最小宽度为4 m，断面最小流速为1.02 m/s。Abstract: In order to provide technical support for river regulation planning and propose drifting water supply scheme in the lower reaches of water conservancy projects, a two-dimensional full hydrodynamic model is adopted to simulate the different conditions with the river regulation or not. The downstream river channel of Sanhekou Water Control Project is taken as an example, where are the beautiful scenery on both sides of the river channel and few dangerous banks of submerged reefs. The elevation of the river bed is generally about 514~526 m, and the thickness of the sand and pebble layer of the river bed is 5~10 m, which provides a guarantee for the implementation of the rafting project. Based on the operation of the upstream water conservancy, hydraulic elements and related statistics on different cross sections were calculated under each working condition of drainage, which is beneficial to putting forward the drift river regulation and water supply scheme. The results show that the two-dimensional hydrodynamic model can successfully simulate the downstream river channel of a water conservancy project with high efficiency and high accuracy under different discharge conditions, and provide effective technical support for the planning of river water entertainment facilities. For saving water resources and reducing the amount of engineering construction, the dredging width of the river channel should be 6 m. Under this working condition, the upstream water conservancy project only needs to discharge 4 m3/s. The minimum water depth of the cross-sections is 0.50 m, the minimum water surface width is 4 m, and the minimum flow velocity is 1.02 m/s.
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Key words:
- power wave method /
- numerical simulation /
- drift
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图 4 天然河道情况下断面水深、宽度及流速
Figure 4. Water depth, width and velocity of cross-section of natural river
图 5 河道疏浚6 m情况下断面水深、宽度及流速
Figure 5. Water depth, width and flow velocity of cross-section under the condition of 6 m river dredging
图 6 河道疏浚10 m情况下断面水深、宽度及流速
Figure 6. Water depth, width and flow velocity of cross-section under the condition of 10 m river dredging
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[1] 林香民, 李剑峰, 胡金花. 旅游安全事故应急救援预案研究[J]. 安全与环境工程,2005,12(2):65-68. (LIN Xiangmin, LI Jianfeng, HU Jinhua. Study on the prediction scheme of urgent rescue for travel safety and travel accidents[J]. Safety and Environmental Engineering, 2005, 12(2): 65-68. (in Chinese) doi: 10.3969/j.issn.1671-1556.2005.02.018 [2] 林香民, 王庆鹏, 李剑峰. 我国旅游业的发展与旅游安全研究[J]. 安全与环境工程,2003,10(1):60-62. (LIN Xiangmin, WANG Qingpeng, LI Jianfeng. Development of tourism industry in our country and research in tourism security[J]. Safety and Environmental Engineering, 2003, 10(1): 60-62. (in Chinese) doi: 10.3969/j.issn.1671-1556.2003.01.017 [3] 汤光荣. 水上漂流安全当头——黔西南州加强水上漂流安全管理[J]. 珠江水运,2000(3):28-29. (TANG Guangrong. Safety on water rafting - Qianxinan prefecture strengthens safety management on water rafting[J]. Pearl River Water Transportation, 2000(3): 28-29. (in Chinese) [4] 丁伟. 东北地区漂流筏检验现状与思考[J]. 中国水运(下半月),2009,9(9):103-104. (DING Wei. The present situation and thinking of floating raft inspection in northeast China[J]. China Water Transport, 2009, 9(9): 103-104. (in Chinese) [5] 杨胜忠, 陈少华. 暴雨山洪对黔东南漂流旅游影响研究[J]. 贵州气象,2012,36(6):22-24. (YANG Shengzhong, CHEN Shaohua. Study on the influence of rainstorm mountain torrents on rafting tourism in southeast Guizhou[J]. Journal of Guizhou Meteorology, 2012, 36(6): 22-24. (in Chinese) [6] 孙慧, 董俊宇, 王呈, 等. 人工漂流河弯道内漂流筏运动的数值模拟[J]. 华北水利水电大学学报(自然科学版),2018,39(5):59-65. (SUN Hui, DONG Junyu, WANG Cheng, et al. Numerical simulation of raft movement in the artificial drifting river bend[J]. Journal of North China University of Water Resources and Electric Power (Natural Science Edition), 2018, 39(5): 59-65. (in Chinese) [7] 李厚峰. 三河口水利枢纽施工组织设计优化[J]. 人民黄河,2020,42(10):104-107, 111. (LI Houfeng. Optimization and practice of construction organization design of Sanhekou Water Conservancy Project[J]. Yellow River, 2020, 42(10): 104-107, 111. (in Chinese) doi: 10.3969/j.issn.1000-1379.2020.10.022 [8] 魏健. 引汉济渭工程初期运行的调水区河道水文响应及生态流量研究[D]. 西安: 西安理工大学, 2020. WEI Jian. Study on the hydrological response and ecological discharge of the rivers in the water diversion area during the initial operation of the Hanjiang-to-Weihe Water Diversion Project[D]. Xi’an: Xi’an University of Technology, 2020. （in Chinese） [9] 侯精明, 李桂伊, 李国栋, 等. 高效高精度水动力模型在洪水演进中的应用研究[J]. 水力发电学报,2018,37(2):96-107. (HOU Jingming, LI Guiyi, LI Guodong, et al. Application of efficient high-resolution hydrodynamic model to simulations of flood propagation[J]. Journal of Hydroelectric Engineering, 2018, 37(2): 96-107. (in Chinese) doi: 10.11660/slfdxb.20180210 [10] YU C S, DUAN J. Two-dimensional depth-averaged finite volume model for unsteady turbulent flow[J]. Journal of Hydraulic Research, 2012, 50(6): 599-611. doi: 10.1080/00221686.2012.730556 [11] SIVAKUMAR P, HYAMS D G, TAYLOR L K, et al. A primitive-variable Riemann method for solution of the shallow water equations with wetting and drying[J]. Journal of Computational Physics, 2009, 228(19): 7452-7472. doi: 10.1016/j.jcp.2009.07.002 [12] HOU J M, LIANG Q H, SIMONS F, et al. A 2D well-balanced shallow flow model for unstructured grids with novel slope source term treatment[J]. Advances in Water Resources, 2013, 52: 107-131. doi: 10.1016/j.advwatres.2012.08.003 [13] LIANG Q H, MARCHE F. Numerical resolution of well-balanced shallow water equations with complex source terms[J]. Advances in Water Resources, 2009, 32(6): 873-884. doi: 10.1016/j.advwatres.2009.02.010 [14] HUBBARD M E. Multidimensional slope limiters for MUSCL-type finite volume schemes on unstructured grids[J]. Journal of Computational Physics, 1999, 155(1): 54-74. doi: 10.1006/jcph.1999.6329 [15] 龚佳辉, 侯精明, 薛阳, 等. 城市雨洪过程模拟GPU加速计算效率研究[J]. 环境工程,2020,38(4):164-169, 175. (GONG Jiahui, HOU Jingming, XUE Yang, et al. Computational efficiency of GPU acceleration in numerical simulation of urban rain-flood process[J]. Environmental Engineering, 2020, 38(4): 164-169, 175. (in Chinese) [16] 玛哈沙提·哈孜哈力, 努尔夏西·曼斯尔. 天然河道的糙率确定方法分析[J]. 能源与节能,2017(4):94-95. (MAHASHATI·HAZIHALI, NUERXIAXI·MANSIER. Analysis of the methods for determing the roughness of natural river course[J]. Energy and Energy Conservation, 2017(4): 94-95. (in Chinese) doi: 10.3969/j.issn.2095-0802.2017.04.046 [17] 四川省质量技术监督局. 漂流旅游项目安全规范: DB51/T 1434—2012[S]. 成都: 四川省质量技术监督局, 2012. （Sichuan Provincial Bureau of Quality and Technical Supervision. Safety standard of rafting tour: DB51/T 1434—2012[S]. Chengdu: Sichuan Provincial Bureau of Quality and Technical Supervision, 2012. （in Chinese） [18] 刘卫林, 万一帆, 刘丽娜, 等. 基于MIKE模型的南丰景观坝行洪能力影响分析[J]. 水利水电技术,2020,51(4):57-66. (LIU Weilin, WAN Yifan, LIU Lina, et al. Analysis of flood discharge capacity of Nanfeng landscape dam based on MIKE model[J]. Water Resources and Hydropower Engineering, 2020, 51(4): 57-66. (in Chinese) [19] 虞邦义, 杨兴菊, 倪晋, 等. 淮河干流行洪区泄流能力研究[J]. 水动力学研究与进展,2014,29(1):125-130. (YU Bangyi, YANG Xingju, NI Jin, et al. Investigation of the discharge capacity of the flood-flowing zones in middle reach of the Huaihe River[J]. Chinese Journal of Hydrodynamics, 2014, 29(1): 125-130. (in Chinese) -
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