Water inlet structure of flood discharge tunnel reconstructed by diversion tunnel

Abstract

The invention provides a water inlet structure of a flood discharge tunnel reconstructed by a diversion tunnel. The water inlet structure of the flood discharge tunnel comprises a flood discharge emptying cavity; the flood discharge cavity comprises a flood discharge cavity body and a flood discharge cavity water inlet arranged at one end of the flood discharge cavity body, and the flood dischargecavity water inlet is a vertical water inlet; and a flood discharge cavity gate is arranged on the flood discharge cavity body, and a diversion tunnel plugging concrete plug, a diversion tunnel plugging gate and a diversion tunnel water inlet are sequentially arranged on one side of the flood discharge emptying water inlet. According to the water inlet structure, a traditional horizontal water inlet is transformed into the vertical water inlet, the structure of the water inlet structure is simple, the influence on an upstream water level is relatively small during construction, so that the construction interference is reduced, the transformation amount is relatively small, the construction difficulty of reconstructing the diversion tunnel into a flood discharge tunnel inlet is reduced, and the construction progress is accelerated.

Description

technical field [0001] The invention relates to a water inlet structure of a flood discharge tunnel rebuilt from a diversion tunnel, which belongs to the technical field of water conservancy and hydropower engineering, and relates to the construction of flood discharge structures of reservoirs, in particular to the water inlet structure of a flood discharge tunnel rebuilt from a diversion tunnel of a reservoir, and is suitable for most The diversion tunnel is converted into a flood discharge tunnel and other structures. Background technique [0002] In the process of reservoir construction, the diversion tunnel of the temporary building during the construction period is usually converted into a permanent flood discharge tunnel, which can reduce the amount of work and investment in the project. [0003] At present, in the reconstruction, the first tunnel of the diversion tunnel is usually excavated and the water inlet is rearranged, so there is a certain degree of constructio...

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Problems solved by technology

[0003] At present, in the reconstruction, the first tunnel of the diversion tunnel is usually excavated and the water inlet is rearranged, so there is a certain degree of construction difficulty, especially for small and medium-sized reservoirs, the elevation difference between the entrance of the permanent flood discharge tunnel and the entrance of the diversion tunnel Smaller, the traditional excavation method has a long construction period and requires high construction technology

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