关于双层泄流排沙孔进口斜门槽涡带性质的研究

Study on the Property of the Turbulent Belt over the Access Gate Chute to a Discharging Bi-layer Tunnel

从减压、常压试验发现的双层泄流排沙孔进口斜门槽的涡带现象，经二元水洞试验验证，证明它是１条气带，并解释了这条气带的成因。该成果对正确判断三门峡双层孔斜门槽导轨的破坏原因和筛选工程改善措施，具有现实指导作用。

The result of the two dimensional hydraulic test conducted by the authors has proved that the turbulent belt over the access gate chute to a discharging tunnel,which was found in the cavitation and normal hydraulic tests,is an aerified flow belt.And the authors explain the reasons for its forming.The research results are of great practical importance both in finding the reasons for the failure of the gate chute to the discharging bi-layer tunnel through Sanmenxia Dam and in selecting the improved engineering measures.