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- Title
淹没植被明渠边界切应力试验研究.
- Authors
姬昌辉; 瑞, 谢; 张幸农; 申 霞
- Abstract
The plants in the river not only purify the water quality, but also increase the resistance of the river and raise the water level. Therefore, the resistance of river with plants is one of the current research hot spots. Plastic grass was used to simulate vegetation, and an open channel with trapezoid cross section was built to study the influence of water depth, velocity and plant spacing to the resistance of open channel with submerged vegetation in this paper. Through the force analysis of the research water body, the calculation formula of the average shear stress of the bed surface was derived. According to the test results, the average shear stress of the boundary under different conditions was calculated and the change rule of the shear stress of the open channel under different flow conditions and different plant densities was analyzed. The results show that the flow velocity and plant spacing have a great influence to the boundary shear stress, while the water depth has a relatively smaller influence to the boundary shear stress.
- Publication
Yellow River, 2021, Vol 43, Issue 5, p71
- ISSN
1000-1379
- Publication type
Article
- DOI
10.3969/j.issn.1000-1379.2021.05.013