Hydraulic dam with sand discharging structure

Abstract

The invention discloses a hydraulic dam with a sand discharging structure. The hydraulic dam comprises a dam foundation and a movable dam; a base and a water stopping assembly are fixed to the dam foundation; the movable dam is rotatably connected to the base through a rotating shaft; an extension dam is hinged to the upper portion of the movable dam; the water stopping assembly comprises a U-shaped water stopping rubber skin, a supporting frame and a bracket; the supporting frame is installed at an opening of the U-shaped water stopping rubber skin; the bracket is fixedly connected with the water stopping rubber skin and the supporting frame; the bracket is fixed to the dam foundation; the water stopping rubber skin abuts against the rotating shaft; the downstream face of the movable dam is provided with a sand discharging barrel with a sand discharging hole; the movable dam is provided with a sand collecting hole communicated with the sand discharging hole; the sand discharging barrel is provided with a cover body; and a driving assembly is arranged between the cover body and the sand discharging barrel. According to the hydraulic dam, automatic sand discharging is achieved by regularly opening the sand discharging hole of the sand discharging barrel, so that the water flow amount is saved; the water storage depth of the hydraulic dam is changed through the extension dam capable of being unfolded or closed; and water can be effectively stopped when the movable dam rotates, and meanwhile impurities can be prevented from entering the bottom of the movable dam.

Description

technical field [0001] The invention relates to the technical field of water conservancy facility construction, and more specifically relates to a hydraulic dam with a sand discharge structure. Background technique [0002] A dam is a water-retaining structure that intercepts the water flow of a river channel to raise the water level or regulate the flow. It is used for flood control, water supply, irrigation, hydropower generation, and improvement of shipping. Commonly used dams include rubber dams, sluice gates and flap gate dams. [0003] With the passage of time, a lot of sand and rocks will be deposited on the facing surface of the dam. The sluice sluice raises the gate, and the flap gate dam discharges sand by lying down on the dam surface. Both the sluice gate and the flap gate dam will waste a lot of water. Because the rubber dam is made of rubber, when there is too much sand and stone, it is not easy to rotate, and it is difficult to discharge sand. If the sand is...

AI Technical Summary

Problems solved by technology

The sluice sluice raises the gate, and the flap gate dam discharges sand by lying down on the dam surface. Both the sluice gate and the flap gate dam will waste a lot of water

Because the rubber dam is made of rubber, when there is too much sand and stone, it is not easy to rotate, and it is difficult to discharge sand. If the sand is not completely discharged, it may cause water leakage at the bottom of the rubber dam

[0004] Due to its limited material, rubber dam has poor impact resistance, is easy to be scratched by sharp objects, and the dam body is easy to burst; although the rail sluice is strong and durable, its construction period is long and the cost is high; the flap gate dam is prefabricated, and the construction period is relatively short. Short and strong material, therefore, the most widely used in recent years

However, there is a very big shortcoming in the flap door dam, water leakage will occur when the flap door dam rotates

Water leakage will affect the water storage effect. The biggest problem is that the flap door dam may not be able to rotate normally due to the intrusion of debris.

And in practical application, it is found that the flap door dam with fixed size cannot meet the needs of use, especially in areas with large precipitation or unstable precipitation. For example, once the precipitation suddenly increases, the flap door dam with fixed height and size The water storage depth cannot be changed. After exceeding the height of the flap door dam, the water will leak from the top of the dam, which cannot play the role of flood control, nor can it store water to the greatest extent, resulting in waste of water resources and flood disasters.

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