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Construction ventilation method for parallel three-hole method tunnel press-in type ventilation

A ventilation method and parallel tunnel technology, applied in mine/tunnel ventilation, earthwork drilling, mining installations, etc., can solve the problems of long smoke exhaust time, incomplete tunnel drainage, and difficult ventilation.

Pending Publication Date: 2021-05-11
CCCC SECOND HIGHWAY ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a construction ventilation method for press-in ventilation of parallel three-hole tunnels, so as to solve the problems of parallel three-hole tunnel ventilation design, long smoke exhaust time, difficult ventilation, and incomplete sewage discharge in the tunnel.

Method used

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  • Construction ventilation method for parallel three-hole method tunnel press-in type ventilation
  • Construction ventilation method for parallel three-hole method tunnel press-in type ventilation

Examples

Experimental program
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Effect test

Embodiment 1

[0022]Referfigure 1 A construction ventilation method of parallel three-way method, including parallel tunnels, three parallel tunnels, parallel tunnels, parallel tunnels, 1, left-line, positive cave 2, and right shifts 3, left lines 2 and the right thread positive hole 3 is located on both sides of the parallel guiding 1, and the adjacent tunnel is provided with a transverse channel 4; the parallel cavity 1 uses the TBM method superior, and the left passage 4 increases the left The excavation work surface of the line front hole 2 and the right shift of the right shift 3, the auxiliary left-line positive hole 2, the right shift is 3 construction.

[0023]Its section design must meet the dimensional requirements of the two-way driving and arrangement of two dumles 6, by increasing the cross-channel excavation work surface, and the transverse channel 4 should meet at least the single-way driving and the size of the wind tube 6.

Embodiment 2

[0025]Based on the first embodiment, the present invention employs a press-in ventilation, a ventilated fan 5 using an axial flow fan 5.

[0026]Further, the parallel guide hole 1, the left-line positive hole 2 and the right line positive hole 3 are provided with a shaft fan 5, and the axial flow fan 5 is connected to the corresponding tunnel facade, in the air tube. At the end of the end, there is a winding and wind speed detector 9 for real-time monitoring of the air supply, according to the air environment and working conditions of the cave, dynamically adjust the wind and air volume of the axial flow fan 5, and meet the needs of the palm sides. .

[0027]Further, the left-line positive hole 2 and the right-line positive hole 3 use the segmented tunnel construction, the left-line positive hole 2 and the right line positive hole 3 via the transverse passage 4 and the parallel guide hole 1, through parallel Cave 1 horizontal channel increases the auxiliary work surface of both sides, fro...

Embodiment 3

[0031]referencefigure 1 withfigure 2In the basis of Example 1 or 2, it is further, and at least two axial flow blower 5 in the parallel guideline 1, one of the axial flow blower 5 connects the wind tube 6 to left-line positive hole 2 auxiliary operation The secondary fan of TBM in parallel in parallel, and another axial fan 5 connects the duct 6 to the right shift of the air.

[0032]Further, the two axial flow blower 5 is connected to the wind tube 6 left and right, the left wind tube leads to the branch of the left-line positive hole 2 through the damper 7, the right wind tube is directed to the door 7 The branch duct of the right-line positive hole 3; one of the ends of the wind tube 6 and the two branch duct ends are provided with air volume and wind speed detector 9.

[0033]Further, the parallel guides 1, the left-line positive hole 2, and the wind tube 6 of the right line positive hole 3 is provided at the upper arched position of the tunnel.

[0034]Further, the transverse passage 4 ...

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Abstract

The invention discloses a construction ventilation method for parallel three-hole method tunnel press-in type ventilation. Three parallel tunnels are provided and are the parallel middle pilot tunnel, the left line main tunnel and the right line main tunnel correspondingly; the left line main tunnel and the right line main tunnel are located on the two sides of the parallel middle pilot tunnel correspondingly; transverse channels used for communicating are arranged between the adjacent tunnels; the parallel middle pilot tunnel is constructed in advance of the main tunnels through a TBM method, the excavation working faces of the left line main tunnel and the right line main tunnel are increased through the transverse channels, and construction of the left line main tunnel and the right line main tunnel is assisted; the left line main tunnel opening and the right line main tunnel opening are each provided with an axial flow fan, and tunnel face ventilation is responsible for through air pipes; the parallel middle pilot tunnel opening is provided with two axial flow fans, and air supply of all working faces in the parallel middle pilot tunnel is responsible for through two air pipes; and the problems that according to the parallel three-hole method tunnel press-in type ventilation design, the smoke exhaust time is long, ventilation is difficult, and pollution discharge in the tunnels is not thorough are solved.

Description

Technical field[0001]The present invention belongs to the technical field of tunnel engineering construction, and in particular, the present invention relates to a construction ventilation method for parallel three-hole tunnel press-in ventilation.Background technique[0002]At present, the ultra-long tunnel often sets parallel guided guided guideline-hole construction, especially for bidirectional separation roads or railway tunnels, in particular for bidirectional separation roads or railway tunnels. The construction period can assist in the construction of Zhengdong, the operation period can be used as an emergency rescue channel. For example, there is a three-way method design in 22km Tianshan Victory Tunnel and Lexi Expressway Daliang Mountain Tunnel, which uses three-way method. In parallel China-guided caves use TBM super-front main hole construction through cross hole to increase the main hole work surface, speed up the master. Cave construction. TBM (Tunnel Boring Machine) is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/00E21F1/04E21F1/08E21F1/10E21F17/18
CPCE21F1/00E21F1/04E21F1/08E21F1/10E21F17/18
Inventor 王帅帅李小桐郭亚斌吴江
Owner CCCC SECOND HIGHWAY ENG CO LTD