摘要
为了研究植物坝的过流水力学特性及固沙机理,进行了室内水槽浑水模型试验,通过物理模型试验及推导建立的水动力学方程,并对植物"柔性坝"过流时的阻力特性进行了研究;在试验资料基础上,利用动量定理及力的平衡方程,推导了植物坝覆盖引起的糙率表达式;利用动量定理及力的平衡方程,推导了植物坝覆盖后总糙率与明渠糙率的关系。将数值计算值与模型试验实测结果进行了比对,两者吻合较好。
The indoor flume model in turbid water experiment was designed to further study mechanical characteristics and sand-binding mechanism of overflowing water in vegetation dam and to study the resist- ance characteristics when vegetation flaxible dam was overflowing, using water dynamic equation estab- lished by physical model experiment and its reduction. Based on a lot of test data,using the momentum law and mechnical equilibrium equation, a rough representation caused by vegetation dam coverage was pro- duced, the relations between the total rough rate of vegetation dam coveraged and open channel rough rate were produced. In conclusion,the calculating value of numerical value and real results of model experiment were compared with each other, these two were indentical with each oher very much.
出处
《新疆农业大学学报》
CAS
2012年第5期422-425,共4页
Journal of Xinjiang Agricultural University
基金
新疆农业大学校前期资助课题项目(XJAU201008)
新疆水利水电工程重点学科基金项目
关键词
植物坝
流场
阻力特性
vegetation dam
flow field
resistance characteristic
