VARIATION CHARACTERISTICS OF FLOW RATE AND WATER DEPTH IN DITCHES WITH UNIFORM INFLOW

XIA Yanhui; WANG Jianlong; WANG Wenhai; ZHAO Zixuan; YANG Feng

doi:10.13205/j.hjgc.202201002

Volume 40 Issue 1

Mar. 2022

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XIA Yanhui, WANG Jianlong, WANG Wenhai, ZHAO Zixuan, YANG Feng. VARIATION CHARACTERISTICS OF FLOW RATE AND WATER DEPTH IN DITCHES WITH UNIFORM INFLOW[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(1): 8-12,20. doi: 10.13205/j.hjgc.202201002

Citation:

XIA Yanhui, WANG Jianlong, WANG Wenhai, ZHAO Zixuan, YANG Feng. VARIATION CHARACTERISTICS OF FLOW RATE AND WATER DEPTH IN DITCHES WITH UNIFORM INFLOW[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(1): 8-12,20. doi: 10.13205/j.hjgc.202201002

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VARIATION CHARACTERISTICS OF FLOW RATE AND WATER DEPTH IN DITCHES WITH UNIFORM INFLOW

doi: 10.13205/j.hjgc.202201002

1. Key Laboratory of Urban Stormwater System and Water Environment (Ministry of Education), Beijing University of Civil Engineering and Architecture, Beijing 100044, China;
2. Beijing Advanced Innovation Center for Future Urban Design, Beijing 100044, China

Received Date: 2021-04-12
Available Online: 2022-03-30
Publish Date: 2022-03-30

Abstract

Abstract

In recent years, in view of the fact that the flow along the ditch is non-uniform flow for linear drainage pipe of stormwater runoff, application of Chézy's formula will bring large errors when applied to engineering design. The experimental physical model method was adopt to investigate the effect of the inflow along the way on the constant flow surface curve of the open channel. Meanwhile, the water level was measured by the piezometer, the effect of water surface curve under the conditions of different slopes, width of ditch bottom and wall surface roughness was investigated, and compared with the calculation results by Chézy's formula. The results showed that the water surface curve in the ditch increased along the way when there was inflow along the flow way under different experimental conditions, which was obviously different from the calculation results by Chézy's formula, and the calculation relationship between flow rate and water depth was further fitted. These results will significantly contribute to optimize the design and calculation of the hydraulic cross-section of the even inflow ditches along the road such as side ditches and linear drainage system.
- channel,
- inflow along the way,
- non-uniform flow,
- water surface curve

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References(14)

References

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