摘要
根据近1000组推移质输沙试验资料,用多元回归的方法就泥沙粒径对推移质输沙率影响的问题进行了研究.结论为:当无因次粒径较小时,随无固次粒径的增大输沙率减小;而当无因次粒径较大时,输沙率与无因次粒径无关.并给出了一个考虑泥沙粒径影响的推移质输沙率公式.
According to near 1 000 sets bed-load transport data, the problem about the influence of sediment diameter on bed-load transport has been analyzed by multi-regression method. The results show that sediment transport rate is smaller with greater sediment diameter when the dimensionless sediment diameter is below 500, and sediment transport rate is almost unvaried with varied sediment diameter when the dimensionless sediment diameter is above 500. In addition, a bed-load sediment transport rate equation which takes account the effect of sediment diameter is given out.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2003年第3期71-74,共4页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省高校省级重点实验室开放课题(KJS01060)
江苏省教育厅自然科学基金(00KJB570002)
关键词
泥沙粒径
推移质
输沙率
有效切应力
sediment diameter
bed-load
sediment transport rate
effective shear stress
