摘要
系统回顾近几十年来国内外有关非均匀沙隐暴作用的研究状况 ,阐述诸多研究成果的局限性及其存在的不足。在此基础上 ,作者采用最新的矢量力学分析方法 ,探讨任意面上处于隐蔽和暴露状态的泥沙颗粒的受力关系 ,建立了更具一般性的非均匀沙起动流速矢量公式。文中又对不同方位床面上的泥沙起动公式进行有益的讨论 ,并对暴露状态下的一维公式进行了验证。
The study status and research achivements on non uniform sediment are analyzed and presented systemically in this paper based on a comprehensive review of the hiding and exposing action, incipient velocity, flume experiment and transport characteristics of non uniform sediment that have been conducted over the past 50 years. By means of a research method of vectorial mechanics, all kinds of forces acting on a particle of non uniform sediment in hiding and exposing states are studied respectively. General vectorial equations of incipient velocity on an arbitrary bed surface in the above two cases are derived respectively. Next the above mentioned vectorial equations are discussed for different angles of bed surface, and the calculated results of incipient velocity for one dimensional equation in exposing state are verified with experimental data.
出处
《青岛海洋大学学报（自然科学版）》
CAS
CSCD
2000年第4期723-728,共6页
Journal of Ocean University of Qingdao
基金
国家自然科学基金委员会
中国水利部联合资助重大项目(59890200)
国家自然科学基金课题(59679010)
四川大学高速大力学国家重点实验室访问学者基金(教技司1999-153号)
开放基金(编号9902)
青岛海洋大学科研起动资盘的联合资助
关键词
河流动力学
非均匀沙
隐暴作用
矢量力学
起动流速
river dynamics
non uniform sediment
hiding and exposing action
vectorial mechanics
incipient velocity
