郭静瑜,周其航,马旭东,聂锐华.小挑坎在导流隧洞出口消能中的应用[J].水电能源科学,2018,36(6):81-83
小挑坎在导流隧洞出口消能中的应用
Application of Small Flip Bucket in Energy Dissipation of Diversion Tunnel Outlet
  
DOI:
中文关键词:  导流隧洞  连续挑坎  体型优化  单宽流量
英文关键词:diversion tunnel  continuous flip bucket  shape optimization  flow per unit width
基金项目:国家重点研发计划项目(2016YFC0402302);四川大学试验技术立项项目(20170158)
作者单位
郭静瑜,周其航,马旭东,聂锐华 四川大学 水力学与山区河流开发保护国家重点实验室四川 成都 610065 
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中文摘要:
      针对山区河道导流隧洞出口布置消能措施空间有限的问题,采用物理模型试验,对比研究了预留岩埂、消力墩、连续坎与差动坎四种不同布置方案的消能效果,通过对比不同方案下导流隧洞出口水流流态、流速、冲刷等水力学指标,最终确定连续坎方案为最优方案。水面线和水流流态对比结果表明,该方案增大了水流的横向扩散,优化了水流衔接流态,大幅减小了水流衔接段单宽流量,进而降低了下游岸边流速,减小了下游河床冲刷。
英文摘要:
      In order to solve the problem of energy dissipation at the outlet of the diversion tunnel which layout space is limited, the physical model test was used to compare the energy dissipation effects of four different schemes, reserving rock bank, dissipating piers, continuous ridges and differential ridges. By comparing hydraulic parameters such as the flow pattern, flow velocity and scouring at the outlet of diversion tunnel under different schemes, the continuous ridge scheme is finally determined as the optimal scheme. The comparisons of water surface lines and flow patterns show that the scheme increased the horizontal spread of water flow, optimized the water flow convergence, and reduces the single width flow of water convergence section greatly, thereby reducing the downstream bank flow rate and the downstream riverbed erosion.
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