Vertical shaft rotational flow flood discharging tunnel and emptying tunnel or diversion tunnel square crossing arrangement hydraulic form

Abstract

The invention discloses a hydraulic engineering type of a vertical crossing arrangement for a silo vortex flood discharging tunnel and a releasing tunnel or a diversion tunnel, which is characterized in that: the hydraulic engineering type is to make the flood discharging tunnel and the releasing tunnel or a diversion tunnel arranged in vertical crossing through a silo vortex chamber on the top of no pressure section behind a middle brake chamber of the releasing tunnel or the diversion tunnel, which combines the flood discharging tunnel behind the silo with the releasing tunnel or the diversion tunnel. The invention needs not to construct a section of drainage equipment from the silo exit to the connection place of two tunnels, and can avoid bad fluidization in a connection place of two tunnels in the prior inclined crossing technique scheme, has no particular requirements and limitations on the axis direction of the releasing tunnel or the diversion tunnel, can select a good and short path for construction according to the landform and geologic conditions, thereby greatly lowering cost, reducing engineering period, achieving the aim of a rapid start of operations.

Description

technical field [0001] The invention belongs to the technical field of layout forms of flood discharge tunnels and vent holes or diversion tunnels in water conservancy projects, and in particular relates to a brand-new hydraulic form in which vertical shaft swirl flood discharge tunnels and vent tunnels or diversion tunnels are vertically intersected. Background technique [0002] In the design of hydropower stations, due to the needs of the engineering process and the limitations of the local topographic and geological conditions, it is often impossible to arrange diversion tunnels or / and vent tunnels and flood discharge tunnels at the same time, so diversion tunnels will be arranged simultaneously in a water conservancy project Or / and emptying tunnels and flood tunnels, and in order to save costs in the later stage of the project, it will be considered to combine these diversion tunnels or / and emptying tunnels and flood tunnels at a certain position, which is commonly refer...

AI Technical Summary

Problems solved by technology

[0005] In actual operation, because the flood discharge tunnel and the emptying tunnel do not operate at the same time, when the water flow in one of the holes flows to the junction of the two holes, one side of the wall suddenly disappears, and the water body loses the restraint effect of the wall, and the water flows horizontally. Diffusion rushes to the other side wall of the vent hole at a certain angle, causing the water body to climb up

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