论文部分内容阅读
水生植物是河流生态系统的重要组成部分,但水生植物的存在使得水流阻力增加,河道行洪能力降低,开展含水生植物河道曼宁糙率系数的研究,对河流生态综合治理具有重要意义。本文基于对含淹没柔性水生植物水流的室内水槽系列试验和量纲分析理论,分析了植物挺立度、相对淹没高度及相对密植度对河道曼宁糙率的影响,给出了淹没状态下含柔性水生植物河道的通用等效曼宁糙率系数经验公式。
Aquatic plants are an important part of the river ecosystem. However, the presence of aquatic plants increases the resistance to water flow and the flood discharge capacity of the river. It is of great significance to study the Manning roughness coefficient of the river with aquatic plants. Based on the series of experiments and dimensional analysis theory of indoor sinks with submerged flexible aquatic plants, this paper analyzes the influence of plant standing, relative submergence height and relative density on Manning roughness of the river, Common Equivalent Manning Roughness Coefficient Empirical Formula for Aquatic Plant Rivers.