【摘要】 旋流竖井泄洪洞的关键问题是:(1)涡室进口与竖井连接段跌坎处易产生负压;(2)高尾水位泄洪洞排气难,出口易发生气爆。针对这两个问题,通过试验研究提出消除涡室连接段负压和防止泄洪洞出口气爆的简易工程措施并介绍了涡室、竖井结构尺寸优化研究成果。更多还原

【Abstract】 The key technical problems of flood discharge tunnel with spiral flow shaft include:(1)negative pressure being prone to occur at the joint of vortex chamber intake and shaft;(2)gas burst being prone to occur at the outlet,as the discharging tunnel is difficult exhaust under the condition of high tail water level;for which the engineering measures have been put forward herein to eliminate the negative pressure in the vortex chamber junction and gas burst in the discharging tunnel.Finally,the results of the optimal size of the vortex chamber and the shaft are presented as well.更多还原