摘要
弯曲溢洪道受弯道折冲水流产生冲击波影响,在挑流消能条件下冲刷坑偏离轴线,威胁工程安全。采用弯道整治措施(隔流墙)改善不对称入流条件,通过模型试验研究了弯曲溢洪道挑流消能冲刷坑在设置隔流墙前后的形态变化及破坏机理。试验结果表明:隔流墙的设置减小了冲刷坑深度≥20cm范围,并使冲刷坑大致呈对称分布,改善了不设置隔流墙时冲刷坑较深,且偏向较大的情况。
The curving spillway is influenced by the knock wave by the curve. Under the condition of ski-jump energy dissipation, scour hole deviated axis threaten project security. This experiment used the curve improvement measure （the diaphragm wall） to improve the asymmetrical inward flow condition. This article reported the shape changing of the ski-jump energy dissipation and curving spillway with establishing diaphragm wall or not by analyzing a motion. The results showed that after establishing the diaphragm wall, the depth of scour hole and the depth ≥20cm are obviously small. After establishing the diaphragm wall, the whole depth of scour hole was approximately symmetrical distribution, improved the situation and increased of the depth of scour hole without establishing the diaphragm wall.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2008年第3期336-339,共4页
Journal of Shenyang Agricultural University
基金
国家科技支撑计划课题(2006BAJ04B06)
关键词
弯曲溢洪道
挑流消能
冲刷坑
隔流墙
curving spillway
ski-jump energy dissipation
scour hole
diaphragm wall
