长江科学院院报 ›› 2015, Vol. 32 ›› Issue (4): 40-44.DOI: 10.3969/j.issn.1001-5485.2015.04.008

• 水力学 • 上一篇    下一篇

泄洪洞窄缝燕尾组合挑坎试验研究

谭哲武,王均星   

  1. 武汉大学 水资源与水电工程科学国家重点试验室,武汉 430072
  • 收稿日期:2014-05-06 修回日期:2014-06-17 出版日期:2015-04-01 发布日期:2015-04-21
  • 通讯作者: 王均星(1963-),男,湖北襄阳人,博士,教授,从事水工水力学、高坝复杂地基与边坡工程方面的研究,(电话)13707182138(电子信箱)jxwang@whu.edu.cn。
  • 作者简介:谭哲武(1987-),男,土家族,湖北巴东人,硕士研究生,从事水工水力学方面的研究,(电话)15072488430(电子信箱)tanzhewu2008@sina.com。

Experimental Research on Flip Bucket Combining Narrow Slit and Swallow-Tail in Flood Release Tunnel

TAN Zhe-wu, WANG Jun-xing   

  1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China
  • Received:2014-05-06 Revised:2014-06-17 Online:2015-04-01 Published:2015-04-21

摘要: 采用物理模型试验的方法,在综合考虑燕尾挑坎、窄缝挑坎2种消能工各自特点的基础上,针对长河坝水电站2#泄洪洞挑流水舌所必须达到的挑射效果,进行了窄缝燕尾新型组合挑坎的试验研究。从挑坎内部水流流态、出挑水舌形态以及下游消能防冲效果3个方面进行了燕尾挑坎、窄缝挑坎以及新型组合挑坎之间的对比试验。研究结果表明新型的组合体型兼有燕尾挑坎与窄缝挑坎的优点,它在改善坎内水流流态、水舌形态、减轻下游河道冲刷方面起到了重要作用,同时也满足2#泄洪洞出挑水舌的限制要求。试验的研究成果可供类似工程参考。

关键词: 泄洪洞, 燕尾挑坎, 窄缝挑坎, 组合挑坎, 消能

Abstract: To meet the requirement of trajectory nappe in the flood release tunnel 2# in Changheba hydropower station, we designed a new-type bucket combing narrow slit and swallow-tail by physical model. The characteristics of slit-type bucket and swallow-tail bucket were comprehensively considered. The flow pattern in bucket, water jet, and energy dissipation and erosion control in the downstream of these three bucket types were compared. Results suggest that this new-type bucket has the advantages of both swallow-tail bucket and slit-type bucket. It improves the flow pattern in bucket, and optimizes water jets form and alleviates downstream scouring. Besides, it adapts to the requirement of trajectory nappe in the flood release tunnel 2#. The research result could be a reference for similar projects.

Key words: flood release tunnel, swallow-tail bucket, slit-type bucket, combined bucket, energy dissipation

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