小浪底水库库区支流拦门沙形成的主因分析

• 作 者: 王远见 谢蔚 王婷 蒋思奇
• 机 构: 黄河水利科学研究院黄河小浪底研究中心,清华大学水利水电工程系,黄河水利水电开发总公司水工部,
• 出 处: 泥沙研究
• 发表日期: 2016年06期
• 关键词: 小浪底水库 拦门沙 多元回归分析 敏感性分析

采用多元回归分析方法,运用无量纲化物理量建立小浪底库区支流每年汛期拦门沙高度、支流淤积量与水沙过程、干支流地形条件、局部输沙流态之间的多元响应关系,指出出库流量、含沙量、干支流地形条件、床沙粒径、库区淤积形态均是影响拦门沙形成的重要因素。敏感性分析结果表明:小浪底水库的出库流量和库区淤积形态是影响拦门沙形成的两个最重要因素。这一研究成果为小浪底水库库区拦门沙工程处置方案提供了理论依据。

Multivariate regression analysis was used to establish the multivariate response relationship between barren height, tributary sediment volume and water and sediment process, dry and branch flow topography and local sediment flow regime in Xiaolangdi reservoir area tributaries by using multiple regression analysis methods. Flow rate, sediment concentration, dry and branch flow topography, bed-sand size and sediment deposition in the reservoir area all play an important role in influencing the formation of barren sand. Sensitivity analysis results show that the discharge of Xiaolangdi Reservoir and the siltation pattern in the reservoir area are the two most important factors affecting the formation of barren sand. The research results provide a theoretical basis for the settlement project of Xiaolangdi Reservoir Area.