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Volume 39 Issue 10
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ZHAO Tian-long, CHEN Sheng-shui, FU Chang-jing, ZHONG Qi-ming, HOU Ying-wei. Centrifugal model tests on section form of drainage channel of barrier dams[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1943-1948. DOI: 10.11779/CJGE201710025
Citation: ZHAO Tian-long, CHEN Sheng-shui, FU Chang-jing, ZHONG Qi-ming, HOU Ying-wei. Centrifugal model tests on section form of drainage channel of barrier dams[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(10): 1943-1948. DOI: 10.11779/CJGE201710025
shu

Centrifugal model tests on section form of drainage channel of barrier dams

  • 1. Key Laboratory for Hydraulic and Waterway Engineering of Ministry of Education, Chongqing Jiaotong University, Chongqing 400074, China;
    2. Geotechnical Engineering Deportment, Nanjing Hydraulic Research Institute, Nanjing 210029, China;
    3. Key Laboratory of Earth-Rock Dam Failure Mechanism and Safety Control Techniques, Ministry of Water Resources, Nanjing 210029, China

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  • Received Date: August 06, 2016
  • Published Date: October 24, 2017
    Graphical Abstract
    • Abstract
  • The centrifugal model tests on barrier dams overtopping are carried out based on the grain composition of Tangjiashan landslide dam, and the influence laws on the discharge process, released water and the size of the residual dam section of the drainage channel with trapezoid, triangle and compound forms are acquired. The characteristics of the flow in different parts of the channel during the discharge process are analyzed from the point of view of water dynamics. The results show that the compound section form has the characteristics of higher initial discharge efficiency, lower peak flow, higher residual dam and larger released water, in which the flow curve is "chunky-type". It can decrease effectively the pressure of flood protection caused by barrier dam discharge and reduce the water level greatly in a shorter time. It is an effective and safe method for the emergency handling of barrier dams.
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    • References (20)
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