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Article

Study of the Sediment Transport Law in a Reverse-Slope Section of a Pressurized Pipeline

by 1,2, 1, 2, 2,3 and 3,4,*
1
School of Water Resources and Hydropower Engineering, Wuhan University, Wuhan 430000, China
2
Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, China
3
Key Laboratory of Yellow River Sediment Research, Ministry of Water Resources, Zhengzhou 450003, China
4
College of Water Conservancy Science and Engineering, Zhengzhou University, Zhengzhou 450003, China
*
Author to whom correspondence should be addressed.
Water 2020, 12(11), 3042; https://doi.org/10.3390/w12113042
Received: 19 October 2020 / Revised: 27 October 2020 / Accepted: 28 October 2020 / Published: 29 October 2020
This article reveals the change law of the head loss and critical deposition velocity during hydraulic transmission of a solid–liquid two-phase pipeline. This article also establishes a physical test model. A single variable is used to conduct the experimental research by changing the conditions of the pipeline flow rate, the sediment concentration, and the reverse slope degree. Based on an analysis of the test process, a new formula is proposed to determine the critical sedimentation rate of the pipeline that considers a change in the adverse slope. By analyzing the variation rule of the hydraulic slope of the pipeline sediment in different states and comparing the hydraulic slope of the horizontal pipeline and reverse pipeline in different states, different factors that influence head loss are revealed. Finally, the measured value of this test is compared with the Durand equation and the Worster equation. It was found that the measured value of this test was more similar to the Durand equation. This study not only provides theoretical support for sand removal in pipelines but also promotes sedimentation in reservoirs. View Full-Text
Keywords: inverse slope pipeline; critical flow velocity; reservoir sedimentation; hydraulic gradient inverse slope pipeline; critical flow velocity; reservoir sedimentation; hydraulic gradient
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MDPI and ACS Style

Wang, J.; Li, Y.; Pan, L.; Lai, Z.; Jian, S. Study of the Sediment Transport Law in a Reverse-Slope Section of a Pressurized Pipeline. Water 2020, 12, 3042. https://doi.org/10.3390/w12113042

AMA Style

Wang J, Li Y, Pan L, Lai Z, Jian S. Study of the Sediment Transport Law in a Reverse-Slope Section of a Pressurized Pipeline. Water. 2020; 12(11):3042. https://doi.org/10.3390/w12113042

Chicago/Turabian Style

Wang, Jiayi; Li, Yitian; Pan, Li; Lai, Zhiqiang; Jian, Shengqi. 2020. "Study of the Sediment Transport Law in a Reverse-Slope Section of a Pressurized Pipeline" Water 12, no. 11: 3042. https://doi.org/10.3390/w12113042

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