清水冲刷推移质输沙率变化规律  

Rule of the bed-load transport rate variation by clear water scouring

作　　者：乐培九[1] 程小兵[1] 朱玉德[1] 崔喜凤[1] 

机构地区：[1]交通部天津水运工程科学研究所,天津300456

出　　处：《水道港口》2006年第6期361-367,共7页Journal of Waterway and Harbor

摘　　要：分析恒定清水冲刷水槽试验资料发现,推移质输沙率变化可分为两个阶段,即时均稳定阶段和衰减阶段。通过机理分析,建立了该两个阶段的计算公式,计算结果与试验资料吻合良好。该式可用来估算任一河段及任一时刻推移质输沙量及冲刷剖面。Based on the flume experiment data of steady clear water scouring, it＇ s shown that the bed - load transport rate variation is divided into two phases, namely, time averaged steady phase and time averaged attenuation phase. According to the mechanism analysis calculation formula of the two phases are established and the calculated results are in good agreement with the tested. Therefore formula can be used to estimate the bed - load sediment transport capacity and scour profile at any reach and any time.

关 键 词：清水冲刷 推移质 输沙率 床沙 沙波 

分 类 号：TV142.2[水利工程—水力学及河流动力学]