摘要
基于对推移质级配的主要影响因素的分析,从推移质与床沙交换平衡原理出发,获得了推移质级配的计算公式。其中推移质输沙率公式沿用恩格隆公式,非均匀沙起动对于中、粗沙采用孙志林公式,中、细沙则对窦国仁公式进行修正,修正系数仍采用孙志林提出的隐暴系数。用长江新厂等实测资料进行了验算,计算结果与实测资料吻合良好。
Based on analysis of the major effective factors of bed load gradation and the principle of exchange between bed load and bed material,the bed load gradation formula is obtained.Engelund bed load formula,Sun equation of initiation movement of medium and coarse sediment,the improved Dou equation of initiation movement of medium and fine sediment,and Sun shelter coefficient are used in the derivation.The new method is verified with measured data of the Yangtze River with a satisfactory agreement.
出处
《泥沙研究》
CSCD
北大核心
2010年第5期13-18,共6页
Journal of Sediment Research
基金
交通部西部交通科技项目(200732822471)
关键词
推移质
推移质输沙率
床沙级配
隐暴系数
bed load
bed load discharge
bed load gradation
shelter exposure coefficient
