Diversion sand bottom culvert system for rockfill concrete gravity dam

Abstract

The invention relates to a culvert system for diversion and sand washing at the bottom of a rockfill concrete gravity dam, comprising: a dam body, a culvert pipe hole, an inspection gate, a first driving part, an inspection room, a working gate, a second driving part, and a work room; the culvert pipe The hole is located at the bottom of one side of the dam body. The culvert hole includes: an inlet section, a square culvert pipe section and an energy dissipation section at the outlet. An inspection gate is slidingly installed in the inlet section. The first driving part is used to drive the inspection gate up and down. The top of the dam body There is an inspection room, and the power part of the first driving part is located in the inspection room; the outer end of the square culvert pipe section protrudes from the outer surface of the dam body, and the upper surface of the outer end of the square culvert pipe section is provided with a working room, and the rotating assembly in the working room is equipped with a working room. For the gate, the second driving part is used to drive the working gate to rotate, and the power part of the second driving part is arranged in the maintenance room. The invention combines the functions of diversion and sand washing into one culvert, and has the effects of good structural stability, low construction cost and short construction period.

Description

technical field [0001] The invention relates to the technical field of rock-fill concrete gravity dams, in particular to a diversion and sand-scouring bottom culvert system for rock-fill concrete gravity dams. Background technique [0002] Rockfill concrete gravity dam is a commonly used dam type in water conservancy projects, and it is mainly suitable for small and medium-sized reservoir projects in mountainous and mid-mountainous areas. [0003] During the construction of a rock-fill concrete gravity dam, it is generally divided into left and right dam sections for separate construction. After the construction of both the dam section and the right dam section is completed, the diversion function is mainly realized through the diversion tunnel at the bottom of the left dam section or the right dam section. Or set sand scour holes at the bottom of the right dam section to achieve. [0004] The split design of the diversion tunnel and the sand washing tunnel will not only i...

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Problems solved by technology

[0004] The split design of the diversion tunnel and the sand washing tunnel will not only increase the construction cost and prolong the construction period, but also open two culverts at the bottom of the rock-fill concrete gravity dam, which will reduce the overall rock-fill concrete capacity to a certain extent. Structural stability of the gravity dam, so it needs to be improved

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