摘要
针对东庄水利枢纽导流洞主流冲顶左岸山体、冲刷河床严重,河谷狭窄致消能防冲布置困难等问题,提出了差动式尾坎、局部尾坎、右边墙斜向扩增三种优化方案。采用1∶50的正态模型开展了水工模型试验,从泄流能力、出口平台流速、下游河道流速三个方面,研究了优化方案对导流洞出口水力特性的影响。结果表明,右边墙斜向扩增方案相对较优,下泄流量有所提高,且显著降低导流洞出口平台流速和下游河道流速。建议根据模型试验成果,对左岸边坡进行针对性防护。
Aiming at the problems of the main stream scouring against the left bank mountain and serious scouring of the riverbed, three optimization schemes including differential tail sill, local tail sill and oblique expansion of the right wall were proposed. The hydraulic model test was carried out with a 1∶50 normal model. The impact of optimization scheme on the hydraulic characteristics of the diversion tunnel outlet was studied from three aspects of discharge capacity, the velocity of outlet platform and downstream channel. The results show that the oblique expansion of the right wall is better, the discharge flow is increased, and the velocity of the platform at the outlet of the diversion tunnel and the velocity of the downstream channel are significantly reduced. Meanwhile, it is suggested to carry out targeted protection for the left bank slope according to the model test results.
作者
刘涛
吕小龙
吴迪
邢建营
LIU Tao;LV Xiao-long;WU Di;XING Jian-ying(Shaanxi Dongzhuang Water Control Project Construction Co.,Ltd.,Xi'an 713200,China;Yellow River Engineering Consult!ng Co.,Ltd.,Zhengzhou 450003,China;Key Laboratory of Water Management and Water Security for Yellow River Basin,Ministry of Water Resources(under construction),Zhengzhou 450003,China)
出处
《水电能源科学》
北大核心
2022年第7期156-158,179,共4页
Water Resources and Power
基金
河南省博士后经费(202002081)
黄河设计公司博士后研究开发项目(2020BSHZL03)。
关键词
导流洞
水工模型试验
尾坎
边墙扩增
体型优化
diversion tunnel
hydraulic model test
tail sill
expansion of wall
shape optimization
