JOURNAL OF YANGTZE RIVER SCIENTIFIC RESEARCH INSTI ›› 2015, Vol. 32 ›› Issue (4): 35-39.DOI: 10.3969/j.issn.1001-5485.2015.04.007

• HYDRAULICS • Previous Articles     Next Articles

Model Test to Select Optimal Shape of Diversion Tunnel Outlet

MA Bin1, LI Li2, ZHANG Zong-xiao3   

  1. 1.Engineering Technology Department, University of Xijing, Xi’an 710048, China;
    2. Engineering Management Department, Water Affairs Bureau of Xuancheng City, Xuancheng 242000, China;
    3.Institute of Water Resources and Hydro-electric Engineering, Xi’an Univeristy of Technology,Xi’an 710048, China
  • Received:2013-11-11 Revised:2013-12-12 Online:2015-04-01 Published:2015-04-21

Abstract: To select an optimum shape of the diversion tunnel outlet for Sanhekou hydropower project, hydraulic model test was conducted to research the influence of outlet shape on the downstream riverbed scouring (range and depth) and bank slope. The test was designed in the presence of diffusion and stilling basin respectively under five working conditions. According to the test results and engineering practice, suggestions to optimize the outlet shape were put forward and further tested. Finally the optimum scheme was determined.

Key words: model test, downstream riverbed scour, expansion segment of outlet, diversion tunnel, scheme comparison and selection, deepest impact point

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