摘要
结合国内深层隧道排水工程-广州市东濠涌深层排水隧道,通过物理模型试验探讨了不同折板间距情况下折板竖井消能规律,并根据竖井中水流在折板间需满足的过流能力及充分消能的约束条件,研究了折板竖井消能的最大过流流量及稳定消能边界,提出了折板竖井设计应同时满足的约束条件以及折板通气孔的推荐位置。研究表明,在折板间距与折板宽度的比值小于0.408时,约束条件只有最大过流能力;当比值大于0.408时,只需考虑充分消能的约束条件。
The physical model experiments have been carried out for the Guangzhou Donghaochong DeepSewerage Tunnel which is a deep tunnel drainage project in China. The project adopts the baffle-drop struc-ture to convey the CSO（combined sewer overflow） into the tunnel. The energy dissipation for different baf-fle spacing has been explored. The maximum operational discharge and stable energy dissipation boundaryare proposed as design constraints. The suitable location of inspection port is recommended. The studyshows that when the ratio of baffle spacing to the baffle width is less than 0.408,the constraint conditionis maximum operational discharge. Otherwise,the stable energy dissipation boundary is the only constraint.
出处
《中国水利水电科学研究院学报》
北大核心
2015年第5期363-367,374,共6页
Journal of China Institute of Water Resources and Hydropower Research
基金
广州市水务科技项目"城市深层排水系统中折板消能竖井的水力特性研究"
关键词
折板竖井
最大过流流量
物理模型
贴壁流流态
设计流量
baffle-drop shaft
maximum operational discharge
stable energy dissipation boundaries
physical model experiments
design constraints
