| 摘要: |
| 三角形迷宫堰作为一种较为新式的堰型,在河道治理中起到蓄水、挡水和泄洪的作用,可有效增加泄流能力。目前对于三角形迷宫堰的研究较少,在实际工程设计中其泄流量尚未发现有效的计算公式。本文将紧密结合工程实践,在前人的基础上,对顶角为60度的不同高度、不同宫数的三角形迷宫堰进行了试验研究,将堰高和宫数作为参数,进行了3组宫数、3种堰高共9种方案的水工模型实验。研究表明：三角形迷宫堰的综合流量系数与堰顶水深H、堰高P、迷宫堰的展开长度L、单宫室宽度w等因素有关。结合试验数据,通过线性拟合得到了H/P、w/P、L/P等因素的三角形迷宫堰综合流量系数计算公式。 |
| 关键词: 三角形迷宫堰;流量系数;影响因素;试验研究 |
| DOI： |
| 分类号:TV132 |
| 基金项目:NSFC-山东联合基金项目 |
|
| Research on Comprehensive Discharge Coefficient of Triangular Labyrinth Weir |
|
huyazhuo, shibing
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|
Ocean University of China
|
| Abstract: |
| As a relatively new type of weir, the triangular labyrinth weir plays the role of water storage,water retention and flood discharge in the course of river treatment. Application in the river course can effectively improve the discharge efficiency and increase the discharge capacity.At present,there are few studies on the triangular labyrinth weir,and no effective calculation formula has been found for its discharge flow in actual engineering design. Combined with engineering practice,and on the basis of predecessors,its hydraulic characteristic of triangular labyrinth weirs with different heights and different number of houses as well as an apex angle of 60 degrees is studied.Using the height of the weir and the number of houses as parameters, three sets of triangular labyrinth weir hydraulic model experiments with 9 schemes of 3 weir heights are considered.The research results show that the comprehensive discharge coefficient of the triangular labyrinth weir is related to factors such as the water depth H at the top of the weir, the height P of the weir, the expansion length L of the labyrinth weir, and the width w of the single chamber. Combining the experimental data, the calculation formulas for the comprehensive discharge coefficient of the triangular labyrinth weir with H/P,w/P,L/P and other factors are obtained through linear fitting. |
| Key words: triangular labyrinth weir;discharge coefficient;influencing factors;experimental research |
