新澳门游戏网站入口 院报 ›› 2025, Vol. 42 ›› Issue (1): 120-128.DOI: 10.11988/ckyyb.20230934

• 水力学 • 上一篇    下一篇

趾墩-梯形墩联合消能工水力特性

赵乾1,2(), 牧振伟1,2(), 周凯1,2, 高尚3, 张红红1,2   

  1. 1 新疆农业大学 水利与土木工程学院,乌鲁木齐 830052
    2 新疆水利工程安全与水灾害防治重点实验室,乌鲁木齐 830052
    3 新疆水利水电勘测设计研究院,乌鲁木齐 830000
  • 收稿日期:2023-08-28 修回日期:2023-12-12 出版日期:2025-01-01 发布日期:2025-01-01
  • 通信作者:
    牧振伟(1973-),男,河南南阳人,教授,硕士,博士生导师,研究方向为水力学及河流动力学。E-mail:
  • 作者简介:

    赵乾(1993-),男,山西大同人,硕士研究生,研究方向为水力学及河流动力学。E-mail:

  • 基金资助:
    国家自然科学基金项目(52269019); 新疆维吾尔自治区高校科研计划创新团队项目(XJEDU2017T004)

Hydraulic Characteristics of Chute Block-Trapezoidal Block Joint Dissipator

ZHAO Qian1,2(), MU Zhen-wei1,2(), ZHOU Kai1,2, GAO Shang3, ZHANG Hong-hong1,2   

  1. 1 College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    2 Xinjiang Key Laboratory of Hydraulic Engineering Security and Water Disasters Prevention, Urumqi 830052,China
    3 Water Conservancy and Hydropower Survey Design and Research Institute of Xinjiang Uygur Autonomous Region, Urumqi 830000, China
  • Received:2023-08-28 Revised:2023-12-12 Published:2025-01-01 Online:2025-01-01

摘要:

针对原消力池流态紊乱、水面波动大,形成的远驱式水跃对护坦造成冲刷破坏等问题,采取趾墩-梯形墩联合消能的方式,对水力特性展开研究。通过模型试验结合数值模拟方法,研究了不同流量下的消能变化规律,分析了水流能量转化过程,计算了流速减速比。结果表明:趾墩-梯形墩联合消能工,当双排梯形墩交错布置时,在3种流量工况下,减速比分别为60.00%、75.34%、73.75%,相较原消力池,跃长依次缩减11.29%、14.17%、10.22%。按照消能方式可分为4个区域:收缩分流区、水跃旋滚区、两侧漩涡区和跃后主流区。该研究可为联合消能工设计及消力池体型优化提供参考依据。

关键词: 消力池, 水力特性, 水跃, 趾墩-梯形墩, 消能

Abstract:

This study aims to address the turbulent flow patterns and significant water surface fluctuations in the original stilling basin, which lead to the formation of repelled downstream hydraulic jumps and subsequent scouring damage to the apron slab. To mitigate these problems, a combined chute block and trapezoidal block energy dissipator is employed, and the hydraulic characteristics of this dissipator are investigated. Physical model testing and numerical simulation techniques are combined to study the energy dissipation behavior under various flow rates. The energy conversion processes within the flow are analyzed, and flow velocity reduction ratios are calculated to assess the effectiveness of the dissipator. Findings indicate that, for the chute block-trapezoidal block joint dissipator with double rows of trapezoidal blocks arranged in a staggered manner, the velocity reduction ratios at three different flow rates are 60.00%, 75.34%, and 73.75%, respectively. Compared to the original stilling basin, this arrangement reduces the length of the hydraulic jump by 11.29%, 14.17%, and 10.22% across the respective flow rates. The energy dissipation mechanism is categorized into four distinct zones: the flow contraction and diversion area, the hydraulic jump swirl area, the vortex areas on both sides, and the post-jump mainstream area. The findings provide a valuable reference for the design of joint dissipators and the optimization of stilling basins.

Key words: stilling basin, hydraulic characteristics, hydraulic jump, chute block - trapezoidal block, energy dissipation

中图分类号: 

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