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Gas tunnel mixed type ventilation method

A ventilation method and hybrid technology, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc. It can solve the problems that cannot meet the construction and safety requirements of blowing and diluting gas, shorten the ventilation distance and reduce air leakage rate, the effect of stable wind speed

Active Publication Date: 2014-01-22
CHINA RAILWAY NO 8 ENG GRP CO LTD
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

In gas tunnels, if the wind speed is too low, it will not be able to meet the construction and safety requirements for blowing and diluting gas

Method used

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  • Gas tunnel mixed type ventilation method
  • Gas tunnel mixed type ventilation method
  • Gas tunnel mixed type ventilation method

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Experimental program
Comparison scheme
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Embodiment Construction

[0026] The following non-limiting examples illustrate the invention.

[0027] A mixed ventilation method for a gas tunnel, which consists of a tunnel main tunnel 1, a flat guide 2, a horizontal passage 3, a blower 4 (SDF (C)-№13 (2×132kw) axial flow fan), 5 exhaust fans (SDF (C) )-№13 (2×132kw) axial flow fan), air supply pipe 6 (Φ1.6m double resistance type air pipe), exhaust pipe 7 (Φ1.6m double resistance type air pipe), damper 8 to form a ventilation system, The ventilation method is:

[0028] 1) Including the main tunnel 1, the horizontal guide 2, and the transverse passage 3 connecting the tunnel main cave 1 and the horizontal guide 2, the horizontal guide 2 is excavated ahead of the main tunnel 1, and several tunnels are successively set at a certain distance along with the excavation of the horizontal guide 2. Cross passage 3, damper 8 is set at cross passage 3, and cross passage 3 is named as 1# cross passage, 2# cross passage, 3# cross passage, until N# cross passag...

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Abstract

The invention discloses a gas tunnel mixed type ventilation method, and belongs to the technical field of tunnels. A blower and a matched air pipe are used for forming an air supply system, and the air supply system is arranged at a position nearby the rear side of a transverse passageway to supply air to a tunnel face; an exhaust fan and a matched air pipe are used for forming an exhaust system at a position where the transverse passageway intersects with a main channel, the exhaust system exhausts foul air in the main channel, and the foul air is discharged outside through a flat guide device; an air door is arranged at the transverse passageway. The gas tunnel mixed type ventilation method has the advantages of being flexible in arrangement, low in air volume loss, high in air speed and high in safety.

Description

technical field [0001] The invention belongs to the technical field of tunnels. Background technique [0002] Gas tunnel ventilation generally adopts roadway ventilation, the axial flow fan for air supply does not enter the tunnel, and the exhaust equipment is generally equipped with a jet fan in the flat guide for drainage, instead of directly extracting the sewage air. The demand for fresh air on the working face is calculated and determined by gas dilution requirements during peak operations, the number of personnel and the maximum air demand for the number of internal combustion engines, so as to determine parameters such as fan power, air duct size, and air supply length. [0003] Commonly used roadway ventilation has a short air supply distance, large air volume loss, and low wind speed at the tunnel face. In gas tunnels, if the wind speed is too low, it will not be able to meet the construction and safety requirements for blowing and diluting gas. Contents of the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00
Inventor 赵智谢录杲杜文斌秦瑞谦先正平王智勇何国敏谢远明廖天明祝光静
Owner CHINA RAILWAY NO 8 ENG GRP CO LTD