A graded lift type retaining dam

Abstract

The invention relates to the technical field of hydraulic and hydroelectric engineering, and aims to provide a novel grading lifting type water retaining dam which is stable in supporting and does not affect lifting of a gate. According to the technical scheme adopted by the novel grading lifting type water retaining dam, the bulkhead gate is composed of a front steel plate and a rear steel plate, and the front steel plate and the rear steel plate are integrally connected through two side plates. The top of the front steel plate is provided with a plurality of rod recovery openings, the rear steel plate are provided with a plurality of rod penetrating grooves, and the rod recovery openings correspond to the rod penetrating grooves one by one. Each rod penetrating groove is composed of two parallel and vertical strip-shaped groove bodies which extend from the middle of the rear steel plate to the edge of the top of the rear steel plate. A supporting assembly is arranged at each group composed of one rod recovery opening and one rod penetrating groove correspondingly, and comprises supporting rods and hinge supports fixed to a downstream bed. The novel grading lifting type water retaining dam is stable in supporting and does not affect lifting of the gate.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower engineering, in particular to a step-by-step lifting type retaining dam. Background technique [0002] At present, there are many small rivers with small annual average flow in our country, and these rivers often show a large difference in flow between wet and dry seasons, reflecting significant flow unevenness and seasonality. Especially for seasonal rivers, the difference in flow between flood seasons and dry seasons is very large. In dry seasons, the flow of such rivers may only be tens or even a few cubic meters, and sometimes the river may even stop flowing and the riverbed may be exposed. In the wet season, the water flow increases sharply due to precipitation such as heavy rain and snowmelt, and even floods rush. Therefore, rivers with such hydrological characteristics have brought many unfavorable factors to the sustainable development of people's domestic water a...

AI Technical Summary

Problems solved by technology

However, this graded floating retaining dam still has huge defects: because the support of the gate in the direction of water flow is too simple, it mainly relies on the opening side wall on the concrete cover plate to form the support

In addition to setting the support rods, usually the workers in the field also improve the impact performance of the gate by increasing the thickness of the gate, but the gate is made of steel, and the increase in its thickness will inevitably greatly increase the weight of the gate itself, which in turn causes push The load of the water-filled rubber bag for lifting the gate is relatively large, which greatly reduces the service life

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