摘要
从坡面流的水动力学特性、坡面流水动力侵蚀特性、坡面流侵蚀输沙特性三个方面评述了国内外关于坡面流侵蚀研究的成就与进展、存在的问题和有待突破的研究重点,指出应通过理论分析与试验相结合的方法,加强对坡面流水动力学问题的研究,尤其是对坡面流的流态、坡面流紊动机制以及坡面流流速分布、水流挟沙能力、阻力的理论表达等开展重点研究,以便为坡面径流侵蚀模拟理论与技术的发展提供支撑。
The paper reviews the achievements and progress of the study on overland flow erosion,existing problems and key points needed to be breakthrough at home and abroad through three aspects of hydrodynamic characteristics,hydrodynamic erosion and sediment transport of overland flow. It points out that it should strengthen the study on hydrodynamics issues of overland flow,especially the key study on flow regime and turbulent mechanism and the theoretical expression of velocity distribution,sediment carrying capacity and resistance of overland flow through the method of theoretical analysis combined with tests for providing support to the development of simulated theory and modeling technique of overland flow erosion.
出处
《中国水土保持》
北大核心
2010年第4期44-47,共4页
Soil and Water Conservation in China
基金
国家"973"项目(2007CB407201)
国家自然科学基金创新研究群体科学基金项目(50721006)
关键词
坡面流
水动力学特性
土壤侵蚀
输沙特性
overland flow
hydrodynamic characteristics
soil erosion
sediment transport characteristics
