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Entire-underground cable tunnel safety manhole being used also as ventilation shaft

A technology for cable tunnels and ventilation shafts, which is applied in the ventilation, safety devices, drainage and other directions of mines/tunnels, and can solve the problems of difficult site selection and routing planning, difficulties in patrol inspection and safe evacuation, and large floor space.

Active Publication Date: 2009-10-28
BEIJING SHOUGANG INT ENG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional cable tunnel ventilation shaft is located above the ground, which occupies a large area and is densely arranged. The appearance of the building is not easy to beautify, which affects the overall environment of the factory area and has many disadvantages.
Especially when it is located on both sides of the main road of the factory, it is more difficult to select the site and plan the route, and there are often conflicts with the factory buildings and other pipelines, and it is difficult to coordinate
[0003] The traditional cable tunnel ventilation shaft uses the inner roof of the tunnel as a buffer platform. Maintenance personnel need to go through two straight ladders to reach the ground during inspections, which poses great difficulties for inspections and safe evacuation

Method used

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  • Entire-underground cable tunnel safety manhole being used also as ventilation shaft
  • Entire-underground cable tunnel safety manhole being used also as ventilation shaft
  • Entire-underground cable tunnel safety manhole being used also as ventilation shaft

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Embodiment Construction

[0017] figure 1 and figure 2 It is a specific embodiment of the present invention.

[0018] Such as figure 1 In the -3.000m floor plan of the ventilation shaft shown, inspection personnel can go down from the outside to the -3.000m level through the stairwell, and then enter the tunnel through the manhole. There are two fire doors in the stairwell, which can enter different fire compartments. There is an axial flow fan next to the fire door, and the air flow can enter the cable tunnel through the fan and the manhole. The ventilation of the partitions is relatively independent and does not interfere with each other. There is a sump at the end of the stairwell. Since there is no building above the stairwell, rainwater will flow into the stairwell in rainy days, and then flow into the sump and be discharged uniformly.

[0019] Such as figure 2 The ventilation shaft-6.400m plan shown is the inner plane of the underground tunnel. In this plane, there is a fire wall with a do...

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Abstract

The invention discloses an entire-underground cable tunnel safety manhole being used also as a ventilation shaft, which pertains to the technical field of power supply and distribution circuits and comprises an underground firewall with a door, an aboveground firewall, a fire door, a propeller fan, a fire damper, a safety manhole, a vertical ladder, a stair hall, a sump pit and a dredge pump; wherein the safety manhole is also used as a ventilation shaft and adopts an entire-underground type. The entire-underground cable tunnel safety manhole has the advantages that: as the internal structure of the ventilation shaft is optimized, the requirements of ventilation, drainage, fire prevention and routing inspection of the cable tunnel are satisfied, and the entire structure of the ventilation shaft is arranged underground, thus solving the problem of the overall beautiful appearance of a factory and effectively reducing the construction cost. The channel and the ventilation opening of the ventilation shaft are integrated into one, thus being capable of being flexibly arranged without affecting the arrangement of other facilities on the ground in the factory district.

Description

technical field [0001] The invention belongs to the technical field of power supply and distribution lines, and in particular provides an all-underground cable tunnel safety manhole and ventilation shaft, which is suitable for the design of the ventilation shaft and safety manhole of the main power pipe network cable tunnel in the factory. Background technique [0002] The traditional cable tunnel ventilation shaft is located above the ground, which occupies a large area and is densely arranged. The appearance of the building is not easy to beautify, which affects the beauty of the overall environment of the factory area, and has many disadvantages. Especially when it is located on both sides of the main road of the factory, it is more difficult to select the site and plan the route, and there are often conflicts with the factory buildings and other pipelines, and it is difficult to coordinate. [0003] The traditional cable tunnel ventilation shaft uses the inner roof of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00E21F16/02E21F5/00E21F17/103
Inventor 刘燕胡国新兰新辉张福明谭彬周焱马伟强
Owner BEIJING SHOUGANG INT ENG TECH
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