Shaft with combined arrangement of underground powerhouse cable line outgoing system and air exhausting system

Abstract

The invention relates to a shaft with the combined arrangement of an underground powerhouse cable line outgoing system and an air exhausting system, and belongs to the shaft structure field in the water conservancy and hydropower engineering. An underground powerhouse cable shaft and an air exhausting shaft are combined into a big well, the big well simultaneously has functions of cable line outgoing, air exhausting and transporting, and the inside of the shaft is divided into a plurality of functional spaces: an elevator shaft, the front chamber of the elevator, a staircase, a high-pressure cable well, a low-pressure cable shaft, a positive-pressure air feeding well, a cable accident smoke discharging well and the like. The shaft has the advantages that the floor space of the ground is reduced, thereby being favorable for environment protection and water and soil conservation, and conforming to the ecological construction purpose advocated by the nation.

Description

technical field [0001] The invention belongs to the field of shaft structures in water conservancy and hydropower projects, and is suitable for underground powerhouses of hydropower stations, especially underground powerhouses of pumped storage power stations. Background technique [0002] With the development of my country's hydropower industry, many large-scale hydropower projects have adopted the structure of underground powerhouses. Since the control room and power output lines are located on the ground, there must be problems with cable outlets and underground caverns. [0003] In recent years, with the advancement of pumped storage power station technology, a large number of large-scale pumped storage power station projects have started construction one after another. Due to the characteristics of the pumped storage power station, such as high outgoing line voltage level, large underground powerhouse burial depth, and special high-voltage outgoing line mode, the design...

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Problems solved by technology

[0013] The invention provides a vertical shaft in which the cable outlet of an underground factory building is arranged in combination with the exhaust system to solve the problem that the current underground factory building outlet system and the exhaust system have a large footprint, which is not conducive to environmental protection and water and soil conservation; it is not conducive to underground tunnels The stability of the room group is not conducive to project safety; the project investment is large, which is not conducive to energy saving and emission reduction

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