Roughness Coefficient of Seabuckthorn Plant Flexible Dam Under Field Water- flow Experiment

YANG Fang-she; LI Huai-en; CAO Ming-ming

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Roughness Coefficient of Seabuckthorn Plant Flexible Dam Under Field Water- flow Experiment

- Roughness Coefficient of Seabuckthorn Plant Flexible Dam Under Field Water- flow Experiment
- Bulletin of Soiland Water Conservation Vol. 30, Issue 4, Pages: 94-98(2011)
- 作者机构：
  
  1. 西北大学城市与环境学院,陕西,西安,710069
  2. 西安理工大学西北水资源与环境生态教育部重点实验室,陕西,西安,710048
- 作者简介：
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- Published：2011
- 稿件说明：
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YANG Fang-she, LI Huai-en, CAO Ming-ming. Roughness Coefficient of Seabuckthorn Plant Flexible Dam Under Field Water- flow Experiment[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 94-98.
DOI：

YANG Fang-she, LI Huai-en, CAO Ming-ming. Roughness Coefficient of Seabuckthorn Plant Flexible Dam Under Field Water- flow Experiment[J]. Bulletin of Soiland Water Conservation, 2011, 30(4): 94-98. DOI：

摘要

为了研究沙棘植物柔性坝的糙率系数，在陕西省华县小华山水库沙棘植物柔性坝进行了沙棘植物柔性坝野外水流试验。运用河流泥沙动力学理论推导了沙棘植物柔性坝的糙率估计公式，并对一定生长期非淹没流的沙棘植物柔性坝的糙率系数进行了估算。结果表明，沙棘柔性坝的糙率范围大致介于0.04~0.09的范围内；并基于野外水流试验数据，按照河流动力学方法对沙棘植物柔性坝的糙率系数进行了反推计算，所得结果与用理论公式估计的结果比较吻合，表明沙棘植物柔性坝糙率理论估计公式可用于对沙棘植物柔性坝的糙率估计，这对于进一步深入研究沙棘植物柔性坝的拦沙效应与机理具有重要意义。

Abstract

In order to analyze the roughness coefficient of the sea buckthorn plant flexible dam

a field water flow test on the sea buckthorn plant flexible dam was conducted in the sea buckthorn plant flexible dam test base in Xiao-hua-shan Reservoir

H uaxian County

Shaanxi Province.The estimation formula of the sea buckthorn plant flexible dams roughness coefficient was derived by the river sediment dynamics theory

and the roughness coefficients of the sea buckthorn plant flexible dam were evaluated by the formula under non-submerged flow during some grow th stage.The results indicated that the sea buckthorn flexible dams roughness coefficient was approximately within the range of 0.04~0.09.The roughness coefficient of the sea buckthorn plant flexible dam was inversely deduced and calculated from the field flow test data by the river dynamics method

and it was found that the result was in accord with that calculated by the theory evaluation for mula.It was suggested that the theoretic estimation formula could be used to evaluate the roughness coefficient of the sea buckthorn plant flexible dam

and it was of great value to further study the effects and mechanism of the sea buckthorn plant flexible dam on sediment retention.

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