导流洞复合式出口消能体型的研究与应用

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摘要：狭窄河谷中高水头、大流量、复杂地质条件的工程前期导流工程面临高速水流泄洪问题,对消能体型要求较高。基于水工物理模型试验对某水利枢纽导流洞出口消能体型进行优化探索,先后提出右岸导向、洞线偏移、左岸分流、强迫消能+左岸分流4种布置方案,通过对水流流态、流速和冲刷特性等水力参数进行测定和比选,最终推荐强迫消能+左岸分流的复合式消能体型,并对推荐体型对大小流量工况的适应性进行导流全过程试验分析。结果表明:复合式消能体型在各工况下消能效率较高,围堰及左岸近岸流速明显降低,分散水流能有效封堵回流,水面波动强度减弱,主流顺利归槽,冲淤情况良好,保护左岸免受冲刷。该复合式消能体型能够满足工程消能及安全稳定要求,可为具有类似特点的导流洞工程的出口设计提供参考。

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关键词： 导流洞;消能体型;消能效果;流态;冲淤特性

Abstract：The preengineering diversion project in narrow river valley with high water head, high discharge and complex geological conditions faces the issue of high speed water discharge, which requires higher energy dissipation body type. Based on hydraulic physics model test, the energy dissipation type at the outlet of diversion tunnel of a hydraulic project was optimized and explored, and four layout schemes including right bank orientation, tunnel line deviation, left bank diversion and forced energy dissipation + left bank diversion were proposed. Through the determination and comparison of hydraulic parameters such as water flow pattern, velocity and erosion characteristics, the compound energy dissipation type of forced energy dissipation + left bank diversion was finally recommended, and the adaptability of the recommended type to the large and small flow conditions was tested and analyzed throughout the diversion process. The test results show that the composite energy dissipation body type has higher energy dissipation efficiency under each working condition, the flow velocity of cofferdam and left bank near shore is obviously reduced, the dispersed water flow can effectively block backflow, the intensity of water surface fluctuation is weakened, the main flow returns to the channel smoothly, the scouring and siltation situation is good and the left bank is protected from scouring. The composite energy dissipation body type can meet the project energy dissipation, safety and stability requirements, and can provide reference for the outlet design of the diversion tunnel project with similar characteristics.

Key words： diversion tunnel; energy dissipation type; energy dissipation effect; flow pattern; scouring characteristics

基金资助：国家自然科学基金资助项目（51279170）

通讯作者介绍：尹进步（1968—）,男,陕西礼泉人,副研究员,主要研究方向为水工水力学

作者简介：闫秀秀（1998—）,女,山东滕州人,硕士研究生,研究方向为水工水力学

引用本文：

闫秀秀¹,尹进步¹,张曜¹,吴伟¹,杜振康¹,阳洲².导流洞复合式出口消能体型的研究与应用[J].人民黄河,2024,46(4):157-162.
YAN Xiuxiu¹, YIN Jinbu¹, ZHANG Yao¹, WU Wei¹, DU Zhenkang¹, YANG Zhou².Research and Application of Composite Outlet Energy Dissipation Type in Diversion Tunnel .Yellow River,2024,46(4):157-162.

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http://www.rmhh.com.cn/qklb/2024/202404/202404/t20240407_568963.html

[1]肖焕雄.施工水力学[M].北京:水利电力出版社,1992:10.

[2]汤宜芹.安康水电站工程的施工导流设计[J].水力发电,1990,16(11):48-51.

[3]张超,雷运华,张有山,等.叶巴滩水电站导流洞布置方案优选研究[J].水利水电技术,2016,47(10):15-19.

[4]史海英,于立新,王重工,等.小浪底工程孔板消能泄洪洞的设计优化[J].人民黄河,2000,22(11):38-39.

[5]张建民.高坝泄洪消能技术研究进展和展望[J].水力发电学报,2021,40(3):1-18.

[6]谢省宗,吴一红,陈文学.我国高坝泄洪消能新技术的研究和创新[J].水利学报,2016,47(3):324-336.

[7]刘文,邓军,卫望汝,等.岸边溢洪道侧面挑入消力池消能方式研究[J].水力发电学报,2015,34(4):111-118.

[8]高玉磊,王韦,邓军,等.高水头泄洪隧洞消能防冲试验研究[J].人民黄河,2010,32(10):148-149.

[9]刘昉,王畅,何军龄.基于正交设计的扭曲鼻坎体型优化试验研究[J].南水北调与水利科技,2020,18(1):166-175.

[10]池明阳,雷声军,崔进,等.枕头坝电站江沟泄洪洞出口消能防冲设计[J].人民长江,2012,43(14):36-39.

[11]张桂花,胡士辉,张晓雷,等.一种新型舌瓣鼻坎消能工的应用研究[J].人民黄河,2021,43(6):127-130,135.

[12]刘达,王均星,张莹莹.高水头窄河道多洞联合泄洪模型试验研究[J].长江科学院院报,2014,31(4):35-38,44.

[13]余挺,贺昌林,张建民,等.高水头大流量泄洪洞挑坎体型优化及下游冲淤研究[J].四川大学学报(工程科学版),2007,39(4):20-25.

[14]吴时强,王芳芳,吴修锋,等.一种异型反台阶整流消能方法及消力池:CN104775393B[P].2017-03-01.

[15]卫勇.导流洞出口消能工的合理体型[J].西北水资源与水工程,2001,12(1):44-48.

[16]国家能源局.水电水利工程常规水工模型试验规程:DL/T 5244—2010[S].北京:中国电力出版社,2010:10.

[17]蒋俏芬.马岭水利枢纽工程导流与泄洪建筑物体型研究[D].杨凌:西北农林科技大学,2017:10.

[18]马斌,李丽,张宗孝.导流洞出口段体型优化模型验证研究[J].长江科学院院报,2015,32(4):35-39.

[19]刘善均,许唯临,王韦,等.导流洞出口集中布置的优化研究[J].四川大学学报(自然科学版),2003,40(2):18-21.

[20]吴令凯,王东.苏洼龙水电站导流隧洞衬砌混凝土监理质量控制[J].四川水力发电,2018,37(6):100-103,198.

[21]余明辉,申康,吴松柏,等.水力冲刷过程中塌岸淤床交互影响试验[J].水科学进展,2013,24(5):675-682.

[22]沈婷,李国英,张幸农.水流冲刷过程中河岸崩塌问题研究[J].岩土力学,2005,26(增刊1):260-263.

2024,Vol. 46(4): 157

导流洞复合式出口消能体型的研究与应用

闫秀秀¹,尹进步¹,张曜¹,吴伟¹,杜振康¹,阳洲²

（（1.西北农林科技大学水利与建筑工程学院,陕西杨凌 712100;2.五凌电力有限公司,湖南长沙 410004））

doi:

Research and Application of Composite Outlet Energy Dissipation Type in Diversion Tunnel

YAN Xiuxiu¹, YIN Jinbu¹, ZHANG Yao¹, WU Wei¹, DU Zhenkang¹, YANG Zhou²

(1.College of Water Resources and Architectural Engineering, Northwest Agricultural and Forestry University, Yangling 712100, China; 2.Wuling Power Corporation Limited, Changsha 410004, China)

全文: PDF ()

摘要： 狭窄河谷中高水头、大流量、复杂地质条件的工程前期导流工程面临高速水流泄洪问题,对消能体型要求较高。基于水工物理模型试验对某水利枢纽导流洞出口消能体型进行优化探索,先后提出右岸导向、洞线偏移、左岸分流、强迫消能+左岸分流4种布置方案,通过对水流流态、流速和冲刷特性等水力参数进行测定和比选,最终推荐强迫消能+左岸分流的复合式消能体型,并对推荐体型对大小流量工况的适应性进行导流全过程试验分析。结果表明:复合式消能体型在各工况下消能效率较高,围堰及左岸近岸流速明显降低,分散水流能有效封堵回流,水面波动强度减弱,主流顺利归槽,冲淤情况良好,保护左岸免受冲刷。该复合式消能体型能够满足工程消能及安全稳定要求,可为具有类似特点的导流洞工程的出口设计提供参考。

关键词：

Abstract: The preengineering diversion project in narrow river valley with high water head, high discharge and complex geological conditions faces the issue of high speed water discharge, which requires higher energy dissipation body type. Based on hydraulic physics model test, the energy dissipation type at the outlet of diversion tunnel of a hydraulic project was optimized and explored, and four layout schemes including right bank orientation, tunnel line deviation, left bank diversion and forced energy dissipation + left bank diversion were proposed. Through the determination and comparison of hydraulic parameters such as water flow pattern, velocity and erosion characteristics, the compound energy dissipation type of forced energy dissipation + left bank diversion was finally recommended, and the adaptability of the recommended type to the large and small flow conditions was tested and analyzed throughout the diversion process. The test results show that the composite energy dissipation body type has higher energy dissipation efficiency under each working condition, the flow velocity of cofferdam and left bank near shore is obviously reduced, the dispersed water flow can effectively block backflow, the intensity of water surface fluctuation is weakened, the main flow returns to the channel smoothly, the scouring and siltation situation is good and the left bank is protected from scouring. The composite energy dissipation body type can meet the project energy dissipation, safety and stability requirements, and can provide reference for the outlet design of the diversion tunnel project with similar characteristics.

Key words: diversion tunnel; energy dissipation type; energy dissipation effect; flow pattern; scouring characteristics

收稿日期:

基金资助: 国家自然科学基金资助项目（51279170）

作者简介: 闫秀秀（1998—）,女,山东滕州人,硕士研究生,研究方向为水工水力学