Layered water intake system for rockfill concrete gravity dam

Abstract

The invention relates to a layered water intake system for a rockfill concrete gravity dam. The layered water intake system includes a dam body, a shaft, water intake opening structures, a support structure, opening and closing gates, a hoisting rope, a working room, a horizontal rail, an electric hoist, a winch and a bottom rail. The shaft is located on the inner side face of the dam body, the multiple water intake opening structures are arranged on the inner side of the shaft, water inlet pipe parts of the water intake opening structures extend into the shaft, the shaft is internally provided with the support structure, the opening and closing gates are assembled in water inlet pipes in a sliding manner, the hoisting rope is connected to the top of the opening and closing gates, the working room is arranged on the top of the dam body, and the top of the hoisting rope extends out of the inner bottom wall of the working room; and the horizontal rail is arranged on the top of the working room, the electric hoist is assembled on the horizontal rail in a sliding manner, the bottom wall is arranged on the inner bottom wall of the working room, the winch is assembled on the bottom railin a sliding manner, the electric hoist is used for dragging the winch to slide, and the top of the hoisting rope and a winding drum of the winch are detachably assembled. By means of the layered water intake system, one winch is used for controlling the multiple opening and closing gates to achieve lifting opening and closing, and the effects of reducing the cost and being short in construction period are achieved.

Description

technical field [0001] The invention relates to the technical field of rock-fill concrete gravity dams, in particular to a layered water intake 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] Since the water quality of each layer of the reservoir is different, the purpose of stratified water intake is to select the best water layer and open water intakes at different depths for water intake. Such as figure 1 As shown, the inner surface of the existing rockfill concrete gravity dam is usually provided with a plurality of water intake structures 3 arranged at high and low intervals, and the adjacent water intake structures 3 are arranged at horizontal intervals, and the interior of each water intake structure 3 Water inlet pipes are provided...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technical solutions have the following defects: of course, the number of water intake structures is generally far more than 5 groups, and in many cases it will reach more than ten groups or even twenty groups. The cost of a hoist is still relatively high, and it is necessary to lay lines and increase the control system for each hoist during the installation process, resulting in an increase in cost, so it needs to be improved

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