Method for constructing and ventilating three parallel tunnels

A technology of parallel tunnel and ventilation method, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., and can solve problems such as inconvenient exhaust and difficult ventilation during normal operation of mechanical equipment, affecting the occupational health of construction workers, etc.

Active Publication Date: 2015-01-28
CHINA RAILWAY NO 5 ENG GRP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a construction ventilation method for three parallel tunnels, so as to overcome the deficiencies in the prior art, such as difficulty in ventilation, affecting the occupational health of construction workers, and inconvenient exhaust for normal operation of mechanical equipment.

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  • Method for constructing and ventilating three parallel tunnels
  • Method for constructing and ventilating three parallel tunnels
  • Method for constructing and ventilating three parallel tunnels

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Embodiment Construction

[0020] Embodiment of the present invention: Design the ventilation system in combination with the working face layout and ventilation requirements of the tunnel construction organization design, calculate the air volume and wind pressure required for each working face according to the tunnel construction specifications, and the selection of the axial flow fan must meet the requirements of the air volume and wind pressure Requirements; flat guide 1, left-line main tunnel 2, and right-line main tunnel 3 are three parallel tunnels, using single-port parallel construction technology, and cross passages 4 are set between adjacent tunnels for communication; press-in ventilation and roadway ventilation are adopted Combined hybrid ventilation mode, ventilation equipment adopts axial flow fan 7, axial flow fan 7 is connected with air duct 8, and air duct 8 is laid in flat guide 1, left line main hole 2, right line main hole 3, and cross channel 4 Inside: set up a wind wall 10 at the...

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Abstract

The invention discloses a method for constructing and ventilating three parallel tunnels. The three parallel tunnels comprise a parallel adit (1), a left-lane forward cave (2) and a right-lane forward cave (3); by a single-entrance parallel construction process, transverse passages (4) for communicating adjacent tunnels are arranged between the adjacent tunnels; by a mixed ventilation way that pressed ventilation and lane ventilation are combined, ventilation equipment adopts an axial flow fan (7); the axial flow fan (7) is connected with air ducts (8); the air ducts (8) are arranged inside the parallel adit (1), the left-lane forward cave (2), the right-lane forward cave (3) and the transverse passage (4); air walls (10) are arranged at the transverse passage (4) entrances of the parallel adit (1) for isolating fresh air (5) from dirt air (6); the parallel adit is constructed in advance, and the parallel adit is taken as a fresh air inlet lane to form the lane ventilation; according to construction progress, the axial flow fan and the air duct which are arranged inside the parallel adit are moved forward timely; the left-lane forward cave and the right-lane forward cave exhaust the dirt air; a jet fan (9) is additionally arranged at a proper position.

Description

technical field [0001] The invention relates to a ventilation method during single-port construction of three parallel tunnels. Background technique [0002] Ventilation of long tunnels is a key problem to be solved during the construction period. Three tunnels are constructed in parallel with a single mouth, and the construction length is more than seven highways, which is rare in China. The ventilation system design is carried out according to the actual conditions of tunnel construction and ventilation requirements to solve the problem of difficult ventilation in the prior art. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a construction ventilation method for three parallel tunnels, so as to overcome the deficiencies in the prior art, such as ventilation difficulties, affecting the occupational health of construction workers, and inconvenient exhausting during normal operation of mechanical equipment. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00
CPCE21F1/00
Inventor 唐陶文刘飚周文亮曾鹏胡涛张海兰陈明
Owner CHINA RAILWAY NO 5 ENG GRP
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