长江科学院院报 ›› 2024, Vol. 41 ›› Issue (12): 91-100.DOI: 10.11988/ckyyb.20230745

• 水力学 • 上一篇    下一篇

溢洪道转弯段消力池水力特性优化模拟

史修府1,2(), 牧振伟1,2(), 吕智3, 张猛强1,2, 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 新疆农业大学 新疆水利工程安全与水灾害防治重点实验室,乌鲁木齐 830053
    3 塔城地区水利水电勘察设计院 技术质量部,新疆 塔城 834799
  • 收稿日期:2023-07-10 修回日期:2023-09-06 出版日期:2024-12-01 发布日期:2024-12-01
  • 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:

    史修府(1998-),男,江苏泗阳人,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); 国家自然科学基金项目(51769037)

Simulation on Optimizing Hydraulic Characteristics of Stilling Pool in Turning Section of Spillway

SHI Xiu-fu1,2(), MU Zhen-wei1,2(), LÜ Zhi3, ZHANG Meng-qiang1,2, ZHANG Hong-hong1,2   

  1. 1 College of Hydraulic and Civil Engineering, Xinjiang Agricultural University, Urumqi 830052, China
    2 Xinjiang Key Laboratory of Water Conservancy Project Safety and Water Disaster Prevention, XinjiangAgricultural University, Urumqi 830053,China
    3 Technical Quality Department, Water Conservancyand Hydropower Survey and Design Institute of Tacheng District, Tacheng 834799,China
  • Received:2023-07-10 Revised:2023-09-06 Published:2024-12-01 Online:2024-12-01

摘要:

溢洪道转弯段消力池受弯道离心力和惯性力影响,往往会出现流态不佳、两岸水深和流速分布不均等不良水力现象。为探索该复杂水流问题,以新疆XBT水库溢洪道消力池为研究对象,设计17个模拟方案,将流态、水深、平均流速和消能率作为研究指标进行分析与评价。研究表明:不同模拟方案对转弯段消力池内部水力特性影响不同;为改善转弯段消力池内不良水力现象,将池深加深至6.55 m、采用矩形敞口出口型式并联合9根交错糙条可取得最佳流态,即中后段壅水问题得到解决并消除了凹岸水流溢出边墙现象,此时凹岸水深相较原方案降低30.22%,两岸水位差仅为0.02 m;通过对消力池内典型断面平均水深和动能计算,消力池出口断面平均水深相较原方案降低了49.97%,消能率由18.97%提高至62.63%。

关键词: 转弯段消力池, 辅助消能工, 水力特性, 消能率, 数值模拟, 溢洪道

Abstract:

Affected by corner centrifugal force and inertial force, stilling pool at the turning section of spillway often exhibits unfavorable flow conditions characterized by uneven water depth and flow velocity distribution. To address this complex flow issue, we conducted simulations on stilling pool at the turning section of the spillway of XBT reservoir in Xinjiang. We designed 17 simulation schemes and selected flow pattern, water depth, average flow velocity, and energy dissipation rate as evaluation indices. Results indicate that the hydraulic characteristics of the turning-section stilling pool vary in different simulation schemes. To mitigate adverse hydraulic phenomena in the stilling pool, deepening the pool depth to 6.55 m, adopting a rectangular open outlet type, and equipping 9 staggered rough strips can achieve optimal flow condition. This configuration resolves the backwater problem in the middle and rear sections and eliminated overflow along the walls. Notably, the water depth at concave bank declined by 30.22% compared to the original scheme, with a marginal water level difference of only 0.02 m between the two sides. According to calculation results of the average water depth and kinetic energy of typical section in the stilling pool, the average water depth at the outlet section decreased by 49.97% from the original scheme, while energy dissipation rate enhanced from 18.97% to 62.63%.

Key words: stilling pool in turning section, auxiliary energy dissipator, hydraulic characteristics, energy consumption rate, numerical simulation, spillway

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