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Study on Hydraulic Connection Characteristics of Local Open Channel and Pressurized Tunnels in Water Transfer Project
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He-fei DONG1, Wen-ren XU1, Yong LAI2
Water Resources and Power | 2023, 41(1) : 108 - 111
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Water Resources and Power | 2023, 41(1): 108-111
• WATER CONSERVANCY AND HYDROPOWER ENGINEERING •
Study on Hydraulic Connection Characteristics of Local Open Channel and Pressurized Tunnels in Water Transfer Project
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He-fei DONG1, Wen-ren XU1, Yong LAI2
Affiliations
  • 1.Wenzhou Oujiang Water Diversion Development Limited Company, Wenzhou 325000, China
  • 2.Zhejiang Design Institute of Water Conservancy and Hydro-electric Power Co., Ltd., Hangzhou 310002, China
Published: 2023-01-25 doi: 10.20040/j.cnki.1000-7709.2023.20220715
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The local open channels play a certain role in regulating and storing water, but the water flow in the junction section with open channel variation and pressure is relatively complex, which may cause adverse water flow phenomena such as air intake, whirlpool and surges. In order to study the hydraulic pattern of the connecting section between the open channel and the pressurized tunnel, based on the water conveyance tunnel of Wenzhou Oujiang water diversion project, a 30:1 large scale normal local hydraulic model was built according to the gravity similarity criterion. The hydraulic pattern, water surface line distribution, velocity distribution and wave characteristics under different conditions were observed through hydraulic model tests. The flow trend, depth, velocity and wave characteristic parameters under different working conditions were obtained. The research results show that the flow in the open channel and the pressurized junction section through the gradual transition is in good shape, and there is no air intake, backflow and surge, which provides support for the safe operation of the project.

water transfer project  /  open channel flow  /  free water tunnel  /  pressurized tunnel  /  hydraulic pattern  /  model test
He-fei DONG, Wen-ren XU, Yong LAI. Study on Hydraulic Connection Characteristics of Local Open Channel and Pressurized Tunnels in Water Transfer Project[J]. Water Resources and Power, 2023 , 41 (1) : 108 -111 . DOI: 10.20040/j.cnki.1000-7709.2023.20220715
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Year 2023 volume 41 Issue 1
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Article Info
doi: 10.20040/j.cnki.1000-7709.2023.20220715
  • Receive Date：2022-03-11
  • Online Date：2026-01-28
  • Published：2023-01-25
Article Data
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History
  • Received：2022-03-11
  • Revised：2022-04-25
Funding
Affiliations
    1.Wenzhou Oujiang Water Diversion Development Limited Company, Wenzhou 325000, China
    2.Zhejiang Design Institute of Water Conservancy and Hydro-electric Power Co., Ltd., Hangzhou 310002, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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