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Analytical Inversion Research and Application of Underwater Longitudinal Profiles in Reservoirs Before and After Reservoir Construction
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Lan-qiang GONG1, Yu-ying SHAO2, Yun TIAN3, You-long GONG3, Hua-wei XIANG1, Di WU1
Water Resources and Power | 2025, 43(9) : 65 - 68
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Water Resources and Power | 2025, 43(9): 65-68
Analytical Inversion Research and Application of Underwater Longitudinal Profiles in Reservoirs Before and After Reservoir Construction
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Lan-qiang GONG1, Yu-ying SHAO2, Yun TIAN3, You-long GONG3, Hua-wei XIANG1, Di WU1
Affiliations
  • 1.PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, China
  • 2.State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
  • 3.Huaneng Lancang River Hydropower Inc., Kunming 650214, China
Published: 2025-09-25 doi: 10.20040/j.cnki.1000-7709.2025.20241960
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Underwater topography serves as essential foundational data for river management and reservoir scheduling. The riverbed longitudinal profile is a significant topographical characteristic and is one of the key elements determining the flow velocity and water level variation along the river or reservoir. Based on the energy equation of flow, this paper employs the width-to-depth ratio /H and the relative depth of the section centroid Hc/H as indicators to quantitatively assess the cross-sectional morphology. The correlation relationship between the cross-sectional area, hydraulic radius, and the maximum water depth for a certain power station is established. An analytical method for inverting the longitudinal profile of deep pools of underwater topography before and after reservoir siltation under the control of water surface lines was proposed. Case study results indicate that the proposed method can quickly and accurately invert underwater topography after the siltation of rivers and reservoirs, providing a new approach for rapid determination of topography before and after reservoir construction.

analytical method  /  water surface profile  /  reservoir terrain  /  inverse problem
Lan-qiang GONG, Yu-ying SHAO, Yun TIAN, You-long GONG, Hua-wei XIANG, Di WU. Analytical Inversion Research and Application of Underwater Longitudinal Profiles in Reservoirs Before and After Reservoir Construction[J]. Water Resources and Power, 2025 , 43 (9) : 65 -68 . DOI: 10.20040/j.cnki.1000-7709.2025.20241960
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Year 2025 volume 43 Issue 9
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Article Info
doi: 10.20040/j.cnki.1000-7709.2025.20241960
  • Receive Date：2024-10-19
  • Online Date：2025-12-16
  • Published：2025-09-25
Article Data
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History
  • Received：2024-10-19
  • Revised：2024-11-18
Funding
Affiliations
    1.PowerChina Guiyang Engineering Corporation Limited, Guiyang 550081, China
    2.State Key Laboratory of Water Resources Engineering and Management, Wuhan University, Wuhan 430072, China
    3.Huaneng Lancang River Hydropower Inc., Kunming 650214, China
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https://castjournals.cast.org.cn/joweb/sdnykx/EN/10.20040/j.cnki.1000-7709.2025.20241960
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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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