弯道处溢流坝闸孔水流水力稳定性分析及优化
作者:
作者单位:

(1.安徽省·水利部淮河水利委员会水利科学研究院,安徽 合肥 230088;2.安徽省建筑工程质量监督检测站有限公司,安徽 合肥 230088)

作者简介:

胡海松(1992— ),男,硕士研究生,工程师,主要从事水利与建筑工程领域研究。

通讯作者:

胡海松(1992— ),男,硕士研究生,工程师,主要从事水利与建筑工程领域研究。

中图分类号:

TV65

基金项目:

/


Analysis and optimization of hydraulic stability of outflow under gates of overflow dam at bend
Author:
Affiliation:

(1.Anhui and Huaihe River Institute of Hydraulic Research, Hefei 230088, China;2. Anhui Construction Engineering Quality Supervision and Inspection Station Co., Ltd., Hefei 230088, China)

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    摘要:

    为研究弯道对溢流坝闸孔水流水力特性的影响,探求弯道处水流进入闸室运动状态的优化措施,以某水库弯道处溢流坝为例建立物理模型。通过对不同流量级下试验数据分析,探讨弯道处某水库溢流坝闸孔挑流对左右岸稳定性、闸孔泄流能力的影响,同时运用 Flow-3d 软件设置导墙措施进行优化数值模拟。结果表明:水流在闸室以螺旋式向下泄流,且在闸室及溢流面上左右碰撞和交汇,使得水流极其不稳定,对左右岸稳定影响极大且降低闸孔泄流能力,对相邻闸孔泄流量增大值的幅度有所减小,最大差值从 1.95 m3/s 降为 0.95 m3/s;设置导墙可以有效减缓弯道对闸孔挑流的水力稳定性的影响,提高闸孔水流泄流能力,为弯道处溢流坝建设提供理论参考。

    Abstract:

    In order to study the influence of bend flow on the hydraulic characteristics of outflow under gates of overflow dam, and explore the optimization measures to change the movement state of water entering the gate chamber at the bend, a physical model is established by taking the overflow dam at the bend of a reservoir as an example. Through the analysis of the test data under different flow levels, the influence of the gate hole deflecting flow of a reservoir overflow dam at the bend on the stability of the left and right banks and the discharge capacity of the gate hole are disussed. At the same time, the FLOW-3D software is used to set the guide wall measures for optimization numerical simulation. The results show that the water flows downward in a spiral way in the lock chamber, and collides and intersects on the left and right of the lock chamber and overflow surface, which make the water flow extremely unstable, and has a great impact on the stability of the left and right banks and reduces the discharge capacity of the gate hole. The magnitude of the increase in the discharge flow of adjacent gate holes is reduced, and the maximum difference is reduced from 1.95m3/s to 0.95m3/s; The setting of guide wall can effectively reduce the influence of the bend on the hydraulic stability of the gate hole flip, improve the discharge capacity of the gate hole, and provide a theoretical reference for the construction of the overflow dam at the bend.

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胡海松,罗居刚,王 兵.弯道处溢流坝闸孔水流水力稳定性分析及优化[J].江淮水利科技,2022,17(2):4-7,15

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  • 收稿日期:2022-02-23
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  • 在线发布日期: 2022-07-19
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