【作者】 王斌； 邓家泉； 何贞俊； 王建平；

【Author】 WANG Bin;DENG Jia-quan;HE Zhen-jun;WANG Jian-ping;Post-Graduate School of Hohai University;Pearl River Hydraulic Research Institute;

【机构】 河海大学； 珠江水利科学研究院；

【摘要】 结合广州市东濠涌深层排水工程,采用物理模型试验探讨了隧道折板竖井中不同隔板位置及不同折板间距情况下折板竖井消能规律,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。并结合进出口约束条件提出了折板竖井的设计流量曲线和设计方法。研究表明:在大折板间距下竖井内水流出现摆动流流态;依据推荐设计方法,当竖井折板间距与竖井直径的比值为0.2时,设计竖井直径D达到最小值。更多还原

【Abstract】 The physical model experiments have been carried out for the Guangzhou Donghaochong Deep Sewerage Tunnel which is the first deep tunnel drainage project in China.The project adopts the baffle-drop structure to convey the CSO(combined sewer overflow) into the tunnel.The energy dissipation for different baffle spacing has been explored.The maximum operational discharge and stable energy dissipation boundary are proposed as design constraints.The suitable location of inspection port is recommended.The study shows that When the ratio of the baffle spacing to its width is less than 0.408,only the maximum flow capacity is the constraints;when the ratio exceeds 0.408,just consider the full energy dissipation as constraints.更多还原