摘要
对于多级洞塞泄洪洞而言,上下级洞塞之间的合理间距影响到洞塞消能能力的发挥,因此有必要研究多级洞塞中上下级洞塞之间的合理间距。采用数值模拟手段,研究了上下级洞塞之间的间距问题。研究结果表明,当孔径比在0.4~0.8范围内,只要上下级洞塞之间的间距达到5.7D以上,各级洞塞均能充分发挥各自的消能能力。研究结果可为多级洞塞设计提供参考。
The distance between upper plug and lower plug affects the energy dissipation capacity of multi-stage plug discharge tunnel.In the present paper,the reasonable distance between the upper plug and the lower plug in multi-stage plug discharge tunnel is researched by numerical simulations.Result shows that when the contraction ratio is in the scope of 0.4-0.8,a reasonable distance between upper plug and lower plug equal to or more than 5.7 D would guarantee the full display of plugs in different stages.
作者
张立新
梁蔚
艾万政
ZHANG Li-xin;LIANG Wei;AI Wan-zheng(School of Civil Engineering,Beifang University of Nationalities,Yinchuan 750021,China;Engineering Safety and Disaster Prevention Department,Yangtze River Scientific Research Institute,Wuhan 430010,China;School of Port and Transportation Engineering,Zhejiang Ocean University,Zhoushan 316022,China)
出处
《长江科学院院报》
CSCD
北大核心
2018年第4期81-83,共3页
Journal of Changjiang River Scientific Research Institute
基金
宁夏回族自治区重点研发计划项目(2016KJHM126)
宁夏高等学校科学研究项目(NGY2016166)
北方民族大学校级重点科研项目(2015KJ12)
宁夏回族自治区高等教育教学改革项目(NXJG2016058)
关键词
多级洞塞
能量损失
数值模拟
合理间距
消能能力
multi-stage plug
energy loss
numerical simulation
reasonable distance
dissipation capacity
