CN109667614B - Relay type ventilation method for long-distance tunnel - Google Patents
Relay type ventilation method for long-distance tunnel Download PDFInfo
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- CN109667614B CN109667614B CN201811546818.8A CN201811546818A CN109667614B CN 109667614 B CN109667614 B CN 109667614B CN 201811546818 A CN201811546818 A CN 201811546818A CN 109667614 B CN109667614 B CN 109667614B
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- tunnel
- fan
- transverse channel
- ventilation
- outer fan
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- 238000009423 ventilation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005641 tunneling Effects 0.000 claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 2
- 230000036541 health Effects 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 abstract description 2
- 230000004630 mental health Effects 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/003—Ventilation of traffic tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a relay type ventilation method for a long-distance tunnel, which relates to the technical field of tunnel construction and mainly solves the problem of poor ventilation effect in tunnel construction, and comprises the following steps: s1, adopting a common tunnel press-in type ventilation mode before tunneling to 1200 m; s2, tunneling to 1200 m, and then adopting roadway ventilation; s3, when the tunnel is excavated to 2500 m, the tunnel faces of the left tunnel and the right tunnel are ventilated, and the fan outside the left tunnel is moved to the third fan section for ventilation; s4, continuously tunneling forwards along with the tunnel face; according to the invention, through the matched use of the left wire hole outer fan, the right wire hole outer fan, the first fan, the second fan and the fan section, the ventilation effect of tunnel construction is fully ensured, the construction working environment in the tunnel is improved, and the influence on the body health of workers due to excessive dust, impurities and the like is effectively avoided.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a relay type ventilation method for a long-distance tunnel.
Background
With the rapid development of railway and highway industries in China, the tunnel industry in China is challenged to new challenges, the quantity and the construction scale of tunnel projects are continuously enlarged, and the level of mechanized construction is higher and higher. In the tunnel construction process, good ventilation is an important source influencing physical and mental health of front-line constructors and is a bottleneck of engineering progress and quality. How to ensure the ventilation effect of tunnel construction and improve the working environment of construction in the tunnel is one of the key problems concerned by the tunnel industry in China at present.
In tunnel construction, various dusts are often mixed in the air, so that the working environment of constructors is severe, good breathing cannot be performed, and the physical and mental health of the constructors is greatly damaged after long-term work in the environment, so that the relay ventilation method for the long-distance tunnel is provided to solve the problems.
Disclosure of Invention
The invention aims to provide a relay type ventilation method for a long-distance tunnel, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a relay type ventilation method for a long-distance tunnel comprises the following steps:
s1, adopting a common tunnel press-in type ventilation mode before tunneling to 1200 m;
s2, tunneling to 1200 m, and then adopting a roadway ventilation mode;
s3, when the tunnel is excavated to 2500 m, ventilating the tunnel faces of the left tunnel and the right tunnel; moving the left line tunnel outer fan into front of a third fan section, utilizing the fan section wind gathering effect to pressurize the left tunnel inlet air, increasing the tunnel inner air inlet volume, simultaneously taking the right line tunnel outer fan as a relay fan, detaching a first fan to be placed at a fourth transverse channel, processing a three-way air distribution device, and utilizing the fourth transverse channel to ventilate the left and right line tunnel face surfaces;
and S4, continuously tunneling along with the tunnel face.
As a further scheme of the invention: in step S1, a left line hole external fan and a right line hole external fan are respectively erected outside the left and right line holes, both the left line hole external fan and the right line hole external fan are 75KW axial fans, the first transverse passage is closed during ventilation, and traffic flow guidance is performed by using the second transverse passage and the third transverse passage.
As a further scheme of the invention: in step S2, the method is that the fan outside the left line tunnel remains stationary; set up a fan rack before the third cross passage, move the outer fan of right side line hole simultaneously and supply left hole to ventilate in the hole, erect a set of first fan simultaneously and supply right line to ventilate, first fan is 110KW axial fan, adds in the second cross passage department during the ventilation and establishes a second fan, the second fan is 35KW jet fan, adopts two I18I-steel to encorbelment in tunnel hunch portion.
As a further scheme of the invention: in the step S4, the method is that the left line hole outer fan is continuously driven forward along with the penetration of the transverse channel, and when the tunnel is driven to 3000 meters, the right line hole outer fan playing a relay role is moved until the tunnel face is penetrated.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, through the matched use of the left wire hole outer fan, the right wire hole outer fan, the first fan, the second fan and the fan section, the ventilation effect of tunnel construction is fully ensured, the construction working environment in the tunnel is improved, and the influence on the body health of workers due to excessive dust, impurities and the like is effectively avoided.
Drawings
Fig. 1 is a schematic view of the ventilation at stage S1 in the present invention.
Fig. 2 is a schematic view of the ventilation at stage S2 in the present invention.
Fig. 3 is a schematic view of the ventilation at stage S3 in the present invention.
Fig. 4 is a blower stand according to the present invention.
In the figure: 1-left line hole outer fan, 2-right line hole outer fan, 3-first transverse channel, 4-second transverse channel, 5-third transverse channel, 6-fan rack, 7-first fan, 8-second fan, 9-fan section, and 10-fourth transverse channel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 4, in an embodiment of the present invention, a relay ventilation method for a long-distance tunnel includes the following steps:
s1, before the tunnel is tunneled to 1200 m, a common tunnel press-in type ventilation mode is adopted, a left tunnel outer fan 1 and a right tunnel outer fan 2 are respectively erected outside a left tunnel and a right tunnel, the left tunnel outer fan 1 and the right tunnel outer fan 2 are both 75KW axial flow fans, a first transverse channel 3 is closed during ventilation, and traffic flow guiding is carried out by using a second transverse channel 4 and a third transverse channel 5;
s2, after the tunnel is tunneled to 1200 m, a tunnel type ventilation mode is adopted, and the left line tunnel outer fan 1 is kept still; a fan rack 6 is arranged in front of the third transverse channel 5, a fan 2 outside the right line hole is moved into the hole for ventilation of the left hole, a group of first fans 7 is erected for ventilation of the right line, the first fans 7 are 1, 10KW axial flow fans of the fourth transverse channel, a second fan 8 is additionally arranged at the second transverse channel 4 during ventilation, the second fan 8 is a 35KW jet flow fan, and two I18I-shaped steel beams are adopted to be suspended on the arch part of the tunnel;
s3, when the tunnel is excavated to 2500 m, ventilating the tunnel faces of the left tunnel and the right tunnel; moving the left linear tunnel outer fan 1 to the front of a third fan section 9, utilizing the wind gathering effect of the fan sections 9 to pressurize the inlet air of the left tunnel, increasing the air inlet amount in the tunnel, simultaneously taking the right linear tunnel outer fan 2 as a relay fan, detaching a first fan 7 to be placed at a fourth transverse channel 10, processing a three-way air distribution device, and utilizing the fourth transverse channel 10 to ventilate the tunnel faces of the left and right linear tunnels;
and S4, continuously tunneling the tunnel face forwards, continuously penetrating and propelling the left line tunnel outer fan 1 forwards along with the excavation of the transverse channel, and moving the right line tunnel outer fan 2 playing a relay role until the tunnel face penetrates when the tunnel is tunneled to 3000 meters.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. A relay type ventilation method for a long-distance tunnel is characterized by comprising the following steps:
s1, adopting a common tunnel press-in type ventilation mode before tunneling to 1200 m;
s2, tunneling to 1200 m, and then adopting a roadway ventilation mode;
s3, when the tunnel is excavated to 2500 m, ventilating the tunnel faces of the left tunnel and the right tunnel;
s4, continuously tunneling forwards along with the tunnel face;
in the step S1, the method includes the steps that a left line hole outer fan (1) and a right line hole outer fan (2) are respectively erected outside a left line hole and a right line hole, a first transverse channel (3) is closed during ventilation, and traffic flow guiding is carried out by utilizing a second transverse channel (4) and a third transverse channel (5); the left wire hole outer fan (1) and the right wire hole outer fan (2) are both 75KW axial flow fans;
in the step S2, the left line hole outer fan (1) is kept still; a fan rack (6) is arranged in front of the third transverse channel (5), a fan (2) outside the right line hole is moved into the hole to ventilate the left hole, a group of first fans (7) are erected to ventilate the right line, a second fan (8) is additionally arranged at the second transverse channel (4) during ventilation, the second fan (8) is a 35KW jet fan, and two I18I-steel beams are adopted to be hung on the arch part of the tunnel;
the first fan (7) is a 110KW axial flow fan; in the step S3, the method comprises the steps that the left line tunnel outer fan (1) is moved to the front of the third fan section (9), meanwhile, the right line tunnel outer fan (2) is used as a relay fan, a first fan (7) is detached and placed at a fourth transverse channel (10), a three-way air distribution device is machined, and the fourth transverse channel (10) is used for ventilating the tunnel faces of the left line tunnel and the right line tunnel;
in the step S4, the method is that the left line tunnel outer fan (1) is continuously pushed forward along with the penetration of the transverse channel, and when the tunnel is tunneled to 3000 meters, the right line tunnel outer fan (2) playing a relay role is moved until the tunnel face is penetrated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546818.8A CN109667614B (en) | 2018-12-18 | 2018-12-18 | Relay type ventilation method for long-distance tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811546818.8A CN109667614B (en) | 2018-12-18 | 2018-12-18 | Relay type ventilation method for long-distance tunnel |
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| Publication Number | Publication Date |
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| CN109667614A CN109667614A (en) | 2019-04-23 |
| CN109667614B true CN109667614B (en) | 2021-03-12 |
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| CN201811546818.8A Expired - Fee Related CN109667614B (en) | 2018-12-18 | 2018-12-18 | Relay type ventilation method for long-distance tunnel |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111396112A (en) * | 2020-03-23 | 2020-07-10 | 河南发恩德矿业有限公司 | Long-distance ventilation system for mine ramp and design method |
| CN111706380B (en) * | 2020-05-20 | 2021-11-09 | 中国路桥工程有限责任公司 | Ventilation method for long and large mountain tunnel construction |
| CN112177657B (en) * | 2020-08-14 | 2022-07-22 | 中铁十六局集团铁运工程有限公司 | Sectional type ventilation system for long-distance tunnel and implementation method thereof |
| CN113550775A (en) * | 2021-08-30 | 2021-10-26 | 中铁十八局集团有限公司 | Tunnel construction relay ventilation unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225746A (en) * | 2008-02-01 | 2008-07-23 | 中铁十七局集团第四工程有限公司 | Laneway type ventilating technique for long and large tunnel |
| CN102080560B (en) * | 2010-12-15 | 2013-03-13 | 中铁隧道集团二处有限公司 | Tunnel wind room relay ventilation method for long blind heading |
| CN102102527A (en) * | 2010-12-20 | 2011-06-22 | 中铁隧道集团有限公司 | Single inclined shaft double positive hole jetting and ventilation technology |
| CN202391447U (en) * | 2011-12-14 | 2012-08-22 | 中铁十二局集团第二工程有限公司 | Single-head tunneling no-air-door roadway type ventilation structure of super-long tunnel |
| CN202391448U (en) * | 2011-12-14 | 2012-08-22 | 中铁十二局集团有限公司 | Roadway type ventilating structure of no-air door of long-distance tunnel |
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