Comprehensive concealed excavation cable tunnel maintenance communicating vertical shaft

Abstract

The invention discloses a comprehensive concealed excavation cable tunnel maintenance communicating vertical shaft. The comprehensive concealed excavation cable tunnel maintenance communicating vertical shaft comprises a maintenance channel, an air supply channel and a feeding channel which are vertically arranged underground, the side faces of the lower ends of the maintenance channel and the air supply channel communicate with a cable tunnel bin through a horizontal maintenance transverse hole, and a smoke-proof chamber is formed in the maintenance transverse hole. The two ends of the smoke-proof chamber communicate with the maintenance channel and the cable tunnel bin through fireproof doors correspondingly, the maintenance channel, the air supply channel and the feeding channel are arranged side by side and are isolated through vertical partition walls, a plurality of horizontal rest platforms are sequentially arranged in the maintenance channel in the vertical direction at intervals, and the fireproof doors are arranged on the partition walls at the positions corresponding to the rest platforms. Maintenance platforms are arranged on other sides of the fireproof doors, and the adjacent rest platforms are connected through inclined walking ladders. The mode that a vertical ladder stand vertically goes up and down in the past is changed, operation of maintainers is good, the evacuation speed of the maintainers is increased, and safety is improved.

Description

technical field [0001] The invention relates to the field of electric equipment, in particular to a comprehensive underground excavation cable tunnel inspection and maintenance communication shaft. Background technique [0002] With the rapid development of the city, the overhead transmission lines that originally occupied the above-ground space have developed into the underground space, and the cable tunnel with a voltage level of 110kV and above has become the new normal and the main force of urban power grid construction. In particular, the main urban area of ​​Chongqing is built close to the mountains, and the construction of cable tunnels needs to pass through mountains and ridges, and the tunnels are mainly excavated in secret. Different from the highway, railway and rail transit tunnels that come out of flat tunnels, after the underground cable tunnel is put into operation, when personnel enter and exit for maintenance, replacement of equipment, and cable release, the...

AI Technical Summary

Problems solved by technology

In the later stage, if new cables are installed through this channel, or when old cables and other pipelines are replaced, the difficulty can be imagined. Due to the chaos in the channel, the pipeline cannot be cast or drawn out, thus wasting the entire channel and turning to new construction or expansion , resulting in economic costs, time costs, social resources, environmental protection, etc.

Moreover, once the cables in the cable tunnel break down and a fire breaks out, there will be no complete facilities in the maintenance shaft, the probability of personnel escaping is extremely low, personal casualties are very likely to occur, and later fire rescue and post-disaster repair work will be very difficult.

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