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导流洞改建为旋流竖井式永久泄洪洞后 ,由于泄洪标准提高 ,对于某些大型工程 ,如小湾、溪洛渡等会遇到下游水位过高的技术难题 ,由于洞顶被淹没 ,泄洪洞内会出现水跃、不稳定气囊等不利流态 ,必须采取适当的工程措施进行调整与控制 .作者在小湾工程大型导流洞改建为旋流竖井式泄洪洞的试验研究中提出采用竖向压板技术优化洞内流态 ,并以多孔平板技术解决导流洞出口的排气问题 ,使这一难题得到较好解决 .本文着重对竖向压板的作用原理进行理论分析与探讨
After the diversion tunnel is converted into a cyclone shaft permanent flood discharge tunnel, due to the improvement of flood discharge standards, some large-scale projects such as Xiaowan and Xiluodu encounter the technical problems of high water level downstream. Due to submergence of the tunnel roof, There will be water jump, unstable airbags and other unfavorable flow patterns, and must take appropriate engineering measures to adjust and control the author in the Xiaowan project diversion tunnel into a swirl Shaft Discharge Tunnel experimental study proposed the use of vertical Pressure plate technology to optimize the flow inside the hole, and porous plate technology to solve the export diversion tunnel exhaust problems, so that this problem can be solved.This paper focuses on the theory of vertical plate action theory analysis and discussion