长江科学院院报2011，Vol.28Issue(7)：1-6,6.
泥沙颗粒相对隐蔽度在散体沙起动研究中的应用
Hidden Degree Applied in the Research on Incipient Motion of Cohesionless Sediment Particles
摘要
Abstract
Based on the results of sediment hidden degree research, an incipient velocity formula with hidden degree as its parameter was deduced in this paper using the rolling model of sediment incipient motion. The formula was applied in limit analysis and monotonicity analysis to theoretically expound the physical phenomena of incipient motion and to demonstrate the starting characteristic of broadly graded non-uniform cohesionless sediment. The numerical relations between hidden degree and non-dimensional incipient shear stress were established via the analysis on incipient motion criterion and the characteristic of hidden degree distribution of cohesionless sediment particles. Finally, former research achievements are taken to manifest the applicability of this incipient velocity formula.关键词
隐蔽度/起动/极限/单调性/起动条件Key words
hidden degree/ incipient motion/ limit/ monotonicity/ incipient motion conditions分类
建筑与水利引用本文复制引用
孟震,杨文俊..泥沙颗粒相对隐蔽度在散体沙起动研究中的应用[J].长江科学院院报,2011,28(7):1-6,6.基金项目
国家重点基础研究发展计划(973计划)资助课题(2007CB714106)；国家自然科学基金资助项目(51079008)；湖北省自然科学基金(2010CDB00201) （973计划）
