混凝土面板砂砾石坝漫顶溃坝模型研究

钟启明; 沈光泽

doi:10.11779/CJGE201909002

混凝土面板砂砾石坝漫顶溃坝模型研究 English Version

钟启明^{1, 2},
沈光泽¹

1. 南京水利科学研究院,江苏南京 210029;
2. 水利部土石坝破坏机理与防控技术重点实验室,江苏南京 210029

基金项目: 国家重点研发计划课题（2017YFC0404805）; 国家自然科学基金项目（51779153）; 江苏省自然科学基金项目（BK20161121）; 中国博士后科学基金项目（2019M651888）

详细信息

作者简介:
钟启明(1981— ),男,安徽省明光市人,教授级高级工程师,主要从事土石坝防灾减灾工程领域的研究。E-mail: qmzhong@nhri.cn。

计量
- 文章访问数: 0191
- HTML全文浏览量: 0
- PDF下载量: 0176
出版历程
- 收稿日期: 2018-06-18
- 发布日期: 2019-09-24

Numerical model for breach of concrete face sand-gravel dams due to overtopping

ZHONG Qi-ming^{1, 2},
SHEN Guang-ze¹

1. Nanjing Hydraulic Research Institute, Nanjing 210029, China;
2. Key Laboratory of Earth-Rock Dam Failure Mechanism and Safety Control Techniques, Ministry of Water Resources, Nanjing 210029, China

摘要

摘要: 基于沟后面板砂砾石坝溃坝案例调研资料及溃坝离心模型试验的反馈分析,提出了一个可描述混凝土面板砂砾石坝漫顶溃决过程的数学模型。该模型的特点是选择可反映高速水流作用下推移质与悬移质运动的坝料输移公式描述宽级配砂砾料的运动特征,以及建立可模拟面板坝每块钢筋混凝土面板在各种变化荷载作用下破坏过程的表达式。选择沟后面板砂砾石坝溃坝案例对建立的模型进行验证,计算结果与实测结果的对比表明：溃口峰值流量、堆石体溃口的顶宽与底宽、折断的面板的数量和各面板的破坏长度、溃坝历时等输出参数的相对误差均控制在±15%以内;由于溃坝过程中面板不断折断,溃口流量过程呈锯齿状抬升。另外,参数敏感性分析的结果表明坝料的冲蚀率和级配特征对溃坝流量过程具有重要的影响。
- 混凝土面板砂砾石坝 /
- 漫顶溃坝 /
- 数学模型 /
- 参数敏感性分析
Abstract: Based upon the data of field investigations and back analysis of centrifugal model tests for the beach case of the Gouhou concrete face sand-gravel dam (CFSGD), a numerical model for breach of CFSGD is developed. The major highlights of the model are the adoption of soil erosion equation which can consider the erosion of bed load and suspended load to depict the erosion process of sandy gravels with a wide range of gradation, and the establishment of analogy to simulate the failure process of concrete face slabs under varying loads during the dam breach. The analysis of the case study of the Gouhou dam breach is used to testify the proposed model, and the comparison between the calculated and measured results shows the relative errors of less than ±15% for the output of breach parameters, which contain the peak breach flow, breach top and bottom widths of the rockfill body, numbers of the failed concrete face slabs and their failure lengths, as well as the failure time of dam breach. Owing to the bending of concrete face slabs, the breach hydrograph has a serrated increase. In addition, the sensitivity analysis indicates that the soil erodibility and grain-size distribution significantly affect the prediction of the breach flow of the dam.
- concrete face sand-gravel dam /
- overtopping-induced dam breach /
- numerical simulation /
- sensitivity analysis of parameters

HTML全文

参考文献(25)

[1]	顾淦臣, 束一鸣, 沈长松. 土石坝工程经验与创新[M]. 北京: 中国电力出版社, 2004. (GU Gan-chen, SHU Yi-ming, SHEN Chang-song.Practice and innovation of earth-rock dam engineering[M]. Beijing: China Electric Power Press, 2004. (in Chinese))
[2]	MODARES M, QUIROZ J E.Structural analysis framework for concrete-faced rockfill dams[J]. International Journal of Geomechanics, 2016, 16(1): 04015024.
[3]	陈生水. 复杂条件下特高土石坝建设与长期安全保障关键技术研究进展[J]. 中国科学: 技术科学, 2018, 48(10): 1040-1048. (CHEN Sheng-shui.Research progresses in key technologies for construction and long-term safety protection of extra high earth-rock dams under complicated conditions[J]. Science China: Technologies Sciences, 2018, 48(10): 1040-1048. (in Chinese))
[4]	陈生水, 阎志坤, 傅中志, 等. 特高面板砂砾石坝结构安全性论证[J]. 岩土工程学报, 2017, 39(11): 1949-1958. (CHEN Sheng-shui, YAN Zhi-kun, FU Zhong-zhi, et al.Evaluation of safety performance of extremely high slab-faced gravel dams[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(11): 1949-1958. (in Chinese))
[5]	GURBUZ A, PEKER I.Monitored performance of a concrete-faced sand-gravel dam[J]. Journal of Performance of Constructed Facilities, 2016, 30(5): 04016011.
[6]	汝乃华, 牛运光. 大坝事故与安全·土石坝[M]. 北京: 中国水利水电出版社, 2001. (RU Nai-hua, NIU Yun-guang.Embankment dam · incidents and safety of large dams[M]. Beijing: China Water and Power Press, 2001. (in Chinese))
[7]	ZHONG Q M, CHEN S S, DENG Z.A simplified physically-based breach model for a high concrete-faced rockfill dam: a case study[J]. Water Science and Engineering, 2018, 11(1): 46-52.
[8]	国家防汛抗旱总指挥部办公室, 水利部科学技术司. 沟后水库砂砾石面板坝: 设计、施工、运行与失事[M]. 北京: 中国水利水电出版社, 1996. (Office of the State Flood Control and Drought Relief Headquarters, Department of Science and Technology of Ministry of Water Resources. Gouhou concrete-faced rockfill dam-design, construction, operation, and failure[M]. Beijing: China Water and Power Press, 1996. (in Chinese))
[9]	陈生水. 土石坝溃决机理与溃决过程模拟[M]. 北京: 中国水利水电出版社, 2012. (CHEN Sheng-shui.Breach mechanism and simulation of breach process for earth-rock dams[M]. Beijing: China Water and Power Press, 2012. (in Chinese))
[10]	胡去劣, 俞波. 面板坝溃决过程模拟计算[J]. 水动力学研究与进展, 2000, 15(2): 16-176. (HU Qu-lie, YU Bo.Numerical simulation for concrete rockfill dam failure[J]. Journal of Hydrodynamics, 2000, 15(2): 169-176. (in Chinese))
[11]	陈生水, 曹伟, 霍家平, 等. 混凝土面板砂砾石坝漫顶溃决过程数值模拟[J]. 岩土工程学报, 2012, 34(7): 1169-1175. (CHEN Sheng-shui, CAO Wei, HUO Jia-ping, et al.Numerical simulation for overtopping-induced break process of concrete-faced sandy gravel dams[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(7): 1169-1175. (in Chinese))
[12]	CHIGANNE F, MARCHE C, MAHDI T F.Evaluation of the overflow failure scenario and hydrograph of an embankment dam with a concrete upstream slope protection[J]. Natural Hazards, 2014, 71(1): 21-39.
[13]	王廷, 沈振中. 一种模拟面板砂砾石坝漫顶溃决的动床耦合分析模型[J]. 水利学报, 2015, 46(6): 699-706. (WANG Ting, SHEN Zhen-zhong.Discrimination method of bed forms based on the law of resistance[J]. Chinese Journal of Hydraulic Engineering, 2015, 46(6): 699-706. (in Chinese))
[14]	SINGH V P.Dam breach modeling technology[M]. Dordrecht: Kluwer Academic, 1996.
[15]	CAO Z X.Non-capacity transport of non-unoform bed load sediment in alluvial rivers[J]. Journal of Mountain Science, 2016, 13(3): 377-396.
[16]	JUEZ C, SOARES-FRAZAO S, MURILLO J, et al.Experimental and numerical simulation of bed load transport over steep slopes[J]. Journal of Hydraulic Research, 2017, 55(4): 455-469.
[17]	TAN G M, FANG H W, DEY S, et al.Rui-Jin Zhang's research on sediment transport[J]. Journal of Hydraulic Engineering, 2018, 144(6): 02518002.
[18]	WU W M.Simplified physically based model of earthen embankment breaching[J]. Journal of Hydraulic Engineering, 2013, 139(8): 837-851.
[19]	WU W M.Computational river dynamics[M]. London: Taylor and Francis, 2007.
[20]	GUO J K.Logarithmic matching and its application in computational hydraulics and sediment transport[J]. Journal of Hydraulic Research, 2002, 40(5): 555-565.
[21]	WU W M, WANG S S Y. Formulas for sediment porosity and settling velocity[J]. Journal of Hydraulic Engineering, 2006, 132(8): 858-862.
[22]	HE Z G, WU T, WENG H X, et al.Numerical simulation of dam-break flow and bed change considering the vegetation effects[J]. International Journal of Sediment Research, 2017, 32(1): 105-120.
[23]	SL 191—2008水工混凝土结构设计规范[S]. 2008. (SL 191—2008 Design code for hydraulic concrete structure[S]. 2008. (in Chinese))
[24]	李雷, 盛金保. 沟后坝砂砾料的工程特性[J]. 水运科学研究, 2000(3): 27-32. (LI Lei, SHENG Jin-bao.Engineering behavior of gravel materials of Gouhou dam[J]. Journal of Nanjing Hydraulic Research Institute, 2000(3): 27-32. (in Chinese))
[25]	XU Y, ZHANG L M.Breaching parameters for earth and rockfill dams[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2009, 135(12): 1957-1969.

施引文献(9)

期刊类型引用(3)

1.	何风贞，李桂臣，阚甲广，许兴亮，冯晓巍，孙元田. 岩石多尺度损伤研究进展. 煤炭科学技术. 2024(10): 33-53 . 百度学术
2.	刘嘉，薛熠，高峰，滕腾，梁鑫. 层理页岩水力裂缝扩展规律的相场法研究. 岩土工程学报. 2022(03): 464-473 . 本站查看
3.	熊祎滢，刘春，刘恒，唐超，周泽栖. 水力耦合作用下岩体破坏现状分析. 四川建筑. 2022(04): 210-212 . 百度学术