人民黄河2024，Vol.46Issue(4)：157-162,6.DOI:10.3969/j.issn.1000-1379.2024.04.027
导流洞复合式出口消能体型的研究与应用
Research and Application of Composite Outlet Energy Dissipation Type in Diversion Tunnel
摘要
Abstract
The pre-engineering diversion project in narrow river valley with high water head,high discharge and complex geological condi-tions 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 com-pound energy dissipation type of forced energy dissipation+left bank diversion was finally recommended,and the adaptability of the recom-mended 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 fluctua-tion 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.关键词
导流洞/消能体型/消能效果/流态/冲淤特性Key words
diversion tunnel/energy dissipation type/energy dissipation effect/flow pattern/scouring characteristics分类
建筑与水利引用本文复制引用
闫秀秀,尹进步,张曜,吴伟,杜振康,阳洲..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):157-162,6.基金项目
国家自然科学基金资助项目(51279170) （51279170）
