CN106948852B - A kind of long range high methane constructing tunnel method of ventilation - Google Patents
A kind of long range high methane constructing tunnel method of ventilation Download PDFInfo
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- CN106948852B CN106948852B CN201710286570.5A CN201710286570A CN106948852B CN 106948852 B CN106948852 B CN 106948852B CN 201710286570 A CN201710286570 A CN 201710286570A CN 106948852 B CN106948852 B CN 106948852B
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- main tunnel
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000009423 ventilation Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000009412 basement excavation Methods 0.000 claims description 10
- 238000010276 construction Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
Classifications
-
- 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
- E21F1/006—Ventilation at the working face of galleries or tunnels
-
- 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)
Abstract
The invention discloses a kind of long range high methane constructing tunnel method of ventilation, comprising the following steps: the first air hose is arranged in S1 at main tunnel hole, and the second air hose is arranged at parallel pilot tunnel hole；S2 third air hose extends to advanced main tunnel face air feed；S3 main tunnel face is by the first air hose air feed, and for parallel pilot drift by the second air hose air feed, third air hose extends to advanced main tunnel face air feed；S4 main tunnel face extends to advanced main tunnel face air feed by third air hose air feed, the 4th air hose by the second air hose air feed, advanced main tunnel face by the first air hose air feed, parallel pilot drift；The parallel pilot drift of S5 is by the second air hose air feed, and for advanced main tunnel face by the 4th air hose air feed, third air hose extends to main tunnel face air feed；For S6 main tunnel face by third air hose through air feed, the 4th air hose extends advanced main tunnel face air feed.Drafting efficiency is optimized, solves the problems, such as tunnel ventilation, strengthens transport capacity, improves construction efficiency.
Description
Technical field
The present invention relates to technical field of tunnel construction, lead to it particularly relates to which a kind of long range high methane constructing tunnel is used
Wind method.
Background technique
It is domestic that old house tunnel is located at Sichuan Province Yibin City Xingwen County kylin township, overall length 6423m, the single side that route is 20 ‰
It goes up a slope, is located on radius 7000m right avertence curve.This Tunnel Passing coal seam high methane and can lava location, tunnel initial risks etc.
Grade is assessed as " height ", and entrance working section is high methane work area.By geologic prospect, tunnel needs to pass through 2 layers of coal seam, richness in coal seam
Containing gas, therefore tunnel ventilation processing is extremely crucial.
For the problems in the relevant technologies, currently no effective solution has been proposed.
Summary of the invention
For above-mentioned technical problem in the related technology, the present invention proposes a kind of long range high methane constructing tunnel ventilation
Method and construction method, optimize drafting efficiency, solve the problems, such as tunnel ventilation, strengthen transport capacity, improve construction
Efficiency.
To realize the above-mentioned technical purpose, the technical scheme of the present invention is realized as follows:
A kind of long range high methane constructing tunnel method of ventilation, comprising the following steps:
S1 is when excavating main tunnel face and not being connected by transverse passage-way between main tunnel and parallel pilot tunnel, at main tunnel hole
First blower and the first air hose are set, and the first air hose extends to air feed at main tunnel face, the setting the at parallel pilot tunnel hole
Two blowers and the second air hose, the second air hose extend to air feed at parallel pilot drift；
S2, which works as, to be excavated advanced main tunnel face at No. three transverse passage-ways and passes through No.1 transverse passage-way between main tunnel and parallel pilot tunnel
When conducting, main tunnel face is by the first air hose air feed, and parallel pilot drift is by the second air hose air feed, while in parallel pilot tunnel hole
Third blower is set at mouthful and third air hose, third air hose extend at No. three transverse passage-ways after parallel pilot tunnel and No. three transverse passage-ways
Advanced main tunnel face position air feed；
S3 when excavate No. five transverse passage-ways at advanced main tunnel face and between main tunnel and parallel pilot tunnel by No.1 transverse passage-way,
When No. two transverse passage-ways, No. three transverse passage-ways and No. four transverse passage-way conductings, main tunnel face is by the first air hose air feed, parallel pilot tunnel area
Face is by the second air hose air feed, while by No.1 transverse passage-way, No. two transverse passage-ways and No. three transverse passage-way closings, and third air hose is through parallel conductive
Advanced main tunnel face position air feed at No. five transverse passage-ways is extended to behind hole and No. five transverse passage-ways；
S4, which works as, to be excavated advanced main tunnel face at No. seven transverse passage-ways and passes through No. four transverse passage-ways between main tunnel and parallel pilot tunnel
When conducting, for main tunnel face by the first air hose air feed, parallel pilot drift is advanced at No. five transverse passage-ways by the second air hose air feed
Air door is arranged by third air hose air feed, while on front side of No. four transverse passage-ways in main tunnel face, by parallel pilot tunnel hole and No. four
Transverse passage-way isolation installs firedamp sensor in the front and rear sides of air door, and the second blower and third blower is moved to air door
After forward position, four fan device and the 4th air hose are set in the forward position of air door, the 4th air hose is through parallel pilot tunnel and No. seven cross
Advanced main tunnel face position air feed at No. seven transverse passage-ways is extended to behind channel；
S5 when excavate No. seven transverse passage-ways at advanced main tunnel face and between main tunnel and parallel pilot tunnel by No. four transverse passage-ways,
When No. five transverse passage-ways and the conducting of No. six transverse passage-ways, parallel pilot drift is by the second air hose air feed, at No. seven transverse passage-ways in advance just
Hole face removes the first blower and the first air hose by the 4th air hose air feed, and third air hose is through parallel pilot tunnel and No. five cross
Air feed at main tunnel face is extended to behind channel, and respectively installs one at No. four transverse passage-ways, No. five transverse passage-ways and No. six transverse passage-ways
Jet blower；
S6 when excavate No. nine transverse passage-ways at advanced main tunnel face and between main tunnel and parallel pilot tunnel by No. four transverse passage-ways,
When No. five transverse passage-ways, No. six transverse passage-ways, No. seven transverse passage-ways and the conducting of No. eight transverse passage-ways, main tunnel face by third air hose air feed,
It removes the second blower simultaneously and the second air hose, the 4th air hose extends at No. nine transverse passage-ways after parallel pilot tunnel and No. nine transverse passage-ways
Advanced main tunnel face position air feed, and a jet blower is respectively installed at No. seven transverse passage-ways and No. eight transverse passage-ways.
Further, first blower, third blower, four fan device are the propeller fan of two 110KW.
Further, first air hose, third air hose and the 4th air hose are double air hoses of φ 1800mm.
Further, second blower is the propeller fan of 2 55KW.
Further, second air hose is single air hose of φ 1500mm.
Further, in S4, second blower, third blower and four fan device are respectively positioned on horizontal logical apart from described No. four
On front side of road at 20m.
Beneficial effects of the present invention: optimizing drafting efficiency, solves the problems, such as tunnel ventilation, strengthens transport capacity,
Improve construction efficiency.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the schematic diagram of the step one described according to embodiments of the present invention；
Fig. 2 is the schematic diagram of the step two described according to embodiments of the present invention；
Fig. 3 is the schematic diagram of the step three described according to embodiments of the present invention；
Fig. 4 is the schematic diagram of the step four described according to embodiments of the present invention；
Fig. 5 is the schematic diagram of the step five described according to embodiments of the present invention；
Fig. 6 is the schematic diagram of the step six described according to embodiments of the present invention.
In figure:
1, main tunnel；2, parallel pilot tunnel；3, the first air hose；4, the second air hose；5, third air hose；6, the 4th air hose；7, No.1
Transverse passage-way；8, No. two transverse passage-ways；9, No. three transverse passage-ways；10, No. four transverse passage-ways；11, No. five transverse passage-ways；12, No. six transverse passage-ways；
13, No. seven transverse passage-ways；14, No. eight transverse passage-ways；15, No. nine transverse passage-ways；16, air door；17, firedamp sensor.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art's every other embodiment obtained belong to what the present invention protected
Range.
As shown in figures 1 to 6, a kind of long range high methane constructing tunnel method of ventilation according to embodiments of the present invention,
The following steps are included:
S1 is when excavating main tunnel face and not being connected by transverse passage-way between main tunnel 1 and parallel pilot tunnel 2, in 1 hole of main tunnel
The first blower is set at mouthful and the first air hose 3, the first air hose 3 extend to air feed at main tunnel face, at parallel 2 hole of pilot tunnel
Second blower and the second air hose 4 are set, and the second air hose 4 extends to air feed at parallel pilot drift；
S2 is horizontal logical by No.1 between advanced main tunnel face and main tunnel 1 and parallel pilot tunnel 2 at No. three transverse passage-ways 9 of excavation
When road 7 is connected, main tunnel face is by 3 air feed of the first air hose, and parallel pilot drift is by 4 air feed of the second air hose, while parallel
Third blower is set at 2 hole of pilot tunnel and third air hose 5, third air hose 5 extend to after parallel pilot tunnel 2 and No. three transverse passage-ways 9
Advanced main tunnel face position air feed at No. three transverse passage-ways 9；
S3 passes through No.1 cross at No. five transverse passage-ways 11 of excavation between advanced main tunnel face and main tunnel 1 and parallel pilot tunnel 2
When 8, No. three transverse passage-ways 9 of transverse passage-way of channel 7, two and No. four transverse passage-ways 10 are connected, main tunnel face by 3 air feed of the first air hose,
Parallel pilot drift is closed by 4 air feed of the second air hose, while by 7, No. two transverse passage-ways 8 of No.1 transverse passage-way and No. three transverse passage-ways 9,
Third air hose 5 extends to advanced main tunnel face position at No. five transverse passage-ways 11 after parallel pilot tunnel 2 and No. five transverse passage-ways 11 and supplies
Wind；
S4 passes through No. four cross at No. seven transverse passage-ways 13 of excavation between advanced main tunnel face and main tunnel 1 and parallel pilot tunnel 2
When channel 10 is connected, main tunnel face is by 3 air feed of the first air hose, and for parallel pilot drift by 4 air feed of the second air hose, No. five horizontal logical
Advanced main tunnel face is by 5 air feed of third air hose at road 11, while air door 16 being arranged on front side of No. four transverse passage-ways 10, will be parallel
2 hole of pilot tunnel is isolated with No. four transverse passage-ways 10, installs firedamp sensor 17 in the front and rear sides of air door 16, and by the second blower and
After third blower is moved to the forward position of air door 16, four fan device and the 4th air hose 6 are set in the forward position of air door 16, the
Four air hoses 6 extend to advanced main tunnel face position air feed at No. seven transverse passage-ways 13 after parallel pilot tunnel 2 and No. seven transverse passage-ways 13；
S5 passes through No. four cross at No. seven transverse passage-ways 13 of excavation between advanced main tunnel face and main tunnel 1 and parallel pilot tunnel 2
When the transverse passage-way 11 of channel 10, five and No. six transverse passage-ways 12 are connected, parallel pilot drift is by 4 air feed of the second air hose, No. seven cross
Advanced main tunnel face is by 6 air feed of the 4th air hose at channel 13, while removing the first blower and the first air hose 3, and third air hose 5 passes through
Air feed at main tunnel face is extended to after parallel pilot tunnel 2 and No. five transverse passage-ways 11, and in 10, No. five transverse passage-ways 11 of No. four transverse passage-ways
A jet blower is respectively installed at No. six transverse passage-ways 12；
S6 passes through No. four cross at No. nine transverse passage-ways 15 of excavation between advanced main tunnel face and main tunnel 1 and parallel pilot tunnel 2
When the transverse passage-way 13 of transverse passage-way 12, seven of transverse passage-way 11, six of channel 10, five and No. eight transverse passage-ways 14 are connected, main tunnel face
By 5 air feed of third air hose, while the second blower and the second air hose 4 are removed, the 4th air hose 6 is through parallel pilot tunnel 2 and No. nine transverse passage-ways
Advanced main tunnel face position air feed at No. nine transverse passage-ways 15 is extended to after 15, and in No. seven transverse passage-ways 13 and No. eight transverse passage-ways
One jet blower is respectively installed at 14.
In one particular embodiment of the present invention, first blower, third blower, four fan device are two
The propeller fan of 110KW.
In one particular embodiment of the present invention, first air hose 3, third air hose 5 and the 4th air hose 6 are φ
Double air hoses of 1800mm.
In one particular embodiment of the present invention, second blower is the propeller fan of 2 55KW.
In one particular embodiment of the present invention, second air hose 4 is single air hose of φ 1500mm.
In one particular embodiment of the present invention, in S4, second blower, third blower and the equal position of four fan device
In at the 10 front side 20m of No. four transverse passage-ways.
In order to facilitate understanding above-mentioned technical proposal of the invention, below by way of in specifically used mode to of the invention above-mentioned
Technical solution is described in detail.
Core of the invention content is using the adjustment with construction speed, constantly adjust blower and air hose put and
Arrangement, it is therefore an objective to reduce the quantity of air hose to reduce the loss of draft air, and ensure that face can maintain newly constantly
Fresh air, which is blown, to be reached, while waste air and air-supply not will cause reflux.
Long range high methane constructing tunnel method of ventilation of the present invention is according to old house tunnel entrance work area
Situations such as high methane geological condition, the easy habitat ventilation wind speed of gas is not less than 1m/s, designs overall ventilation scheme, uses early period
Forced ventilation uses ventilation by ducts after transverse passage-way is got through, and to ensure firedamp drainage ventilation effect, construction ventilation is divided into six
A stage, each stage ventilation arrangement are as follows:
As shown in Figure 1, the first stage is forced ventilation: main tunnel 1 uses 2 110KW propeller fan (i.e. the first wind
Machine), match the bis- air hoses of φ 1800mm (i.e. the first air hose 3), 2 55KW propeller fans (i.e. the second blower) of parallel pilot tunnel 2 use,
With the mono- air hose of φ 1500mm (i.e. the second air hose 4).First blower is set at 1 hole of main tunnel outside 30m, and the second blower is set to flat
At the hole of row pilot tunnel 2 outside 30m.
As shown in Fig. 2, second stage is forced ventilation: main tunnel 1 still uses 2 110KW propeller fan (i.e. the first wind
Machine), match the bis- air hoses of φ 1800mm (i.e. the first air hose 3), parallel pilot tunnel 2 is still using 2 55KW propeller fan (i.e. the second wind
Machine), match the mono- air hose of φ 1500mm (i.e. the second air hose 4), the advanced main tunnel face at No. three transverse passage-ways 9 uses 2 110KW
Propeller fan (i.e. third blower), match the bis- air hoses of φ 1800mm (i.e. third air hose 5), third air hose 5 by parallel pilot tunnel 2 hole
Mouth extends to No. three transverse passage-ways 9 and enters advanced face air feed, and third blower position is located at the hole of parallel pilot tunnel 2 outside 30m.
As shown in figure 3, the phase III is ventilation by ducts: when the advanced main tunnel face at No. five transverse passage-ways 11 excavates,
Main tunnel 1 is penetrated through with No. three transverse passage-ways 9, and main tunnel 1 is still using 2 110KW propeller fans (i.e. the first blower), with φ 1800mm
Double air hoses (i.e. the first air hose 3), parallel pilot tunnel 2 still using 2 55KW propeller fans (i.e. the second blower), with φ 1500mm it is mono-
Air hose (i.e. the second air hose 4).Advanced main tunnel face at No. five transverse passage-ways 11 is using original for advanced at No. three transverse passage-ways 9
2 110KW propeller fans (i.e. third blower) of main tunnel face match the bis- air hoses of φ 1800mm (i.e. third air hose 5), the
Three air hoses 5 walk parallel pilot tunnel 2 through No. five transverse passage-ways 11 to face air feed from the hole of parallel pilot tunnel 2.One, two, No. three at this time
Transverse passage-way 9 is closed.
As shown in figure 4, fourth stage is ventilation by ducts: when the advanced main tunnel face at No. seven transverse passage-ways 13 excavates,
It takes blower into the mode in hole, reduces ventilation distance, to achieve the purpose that guarantee ventilation quality.No. four transverse passage-ways 10 with it is parallel
Air door 16 is arranged in the small mileage side in 2 intersection of pilot tunnel, and will all block at one to No. three transverse passage-way 9 and 1 perforation of main tunnel, prevents dirt
Wind reflux, is isolated air door 16 with return air to parallel 2 hole side of pilot tunnel, and install firedamp sensor 17 respectively in 16 two sides of air door
Monitor gas density.I.e. four fan device enters parallel pilot tunnel 2 and is arranged at No. four 10 holes of transverse passage-way to small mileage for second, third
At the 20m of direction, parallel pilot tunnel 2 is still using 2 55KW propeller fans (i.e. the second blower), with the mono- air hose of φ 1500mm (i.e. the
Two air hoses 4).No. five transverse passage-ways 11 are still using 2 110KW propeller fans (i.e. third blower), with the bis- air hoses of φ 1800mm
(i.e. third air hose 5), the advanced main tunnel face at No. seven transverse passage-ways 13 use 2 110KW propeller fan (i.e. the 4th wind
Machine), match the bis- air hoses of φ 1800mm (i.e. the 4th air hose 6), the 4th air hose 6 walks parallel pilot tunnel 2 through No. seven transverse passage-ways 13 to face
Air feed.Before main tunnel 1 is not penetrated through with No. five transverse passage-ways 11, still using 2 110KW propeller fans (i.e. first outside 1 mouthful of main tunnel
Blower), divulge information through main tunnel 1 with the bis- air hoses of φ 1800mm (i.e. the first air hose 3).
As shown in figure 5, the 5th stage was ventilation by ducts: when main tunnel 1 and No. five transverse passage-ways 11 penetrate through, removing 1 hole of main tunnel
2 110KW propeller fans (i.e. the first blower) and the bis- air hoses of φ 1800mm (i.e. the first air hose 3) at mouthful.No. seven transverse passage-ways
Advanced main tunnel face, parallel pilot tunnel 2 and main tunnel face at 13 are by into hole blower air feed.Parallel pilot tunnel 2 still uses 2
55KW propeller fan (i.e. the second blower) matches the mono- air hose of φ 1500mm (i.e. the second air hose 4).It is advanced at No. seven transverse passage-ways 13
Main tunnel face still uses 2 110KW propeller fans (i.e. four fan device), with the bis- air hoses of φ 1800mm (i.e. the 4th air hose
6), main tunnel face uses original 2 110KW propeller fans for the advanced main tunnel face at No. five transverse passage-ways 11 (i.e.
Third blower), match the bis- air hoses of φ 1800mm (i.e. third air hose 5), third air hose 5 walk parallel pilot tunnel 2 through No. five transverse passage-ways 11 to
Main tunnel face air feed.To prevent the waste air of the transverse passage-way 12 of transverse passage-way 11, six of No. four transverse passage-ways 10, five from flowing back, exist respectively
In three transverse passage-ways plus jet blower guides waste air to be flowed from parallel pilot tunnel 2 to 1 direction of main tunnel.
As shown in fig. 6, the 6th stage was ventilation by ducts: when the advanced face at No. nine transverse passage-ways 15 excavates, No. seven
Transverse passage-way 13 has been penetrated through with main tunnel 1, and the advanced main tunnel face at main tunnel face and No. nine transverse passage-ways 15 is by into hole blower
Air feed.Main tunnel face still uses 2 110KW propeller fans (i.e. third blower), with bis- air hose (the i.e. thirds of φ 1800mm
Air hose 5), the advanced main tunnel face at No. nine transverse passage-ways 15 is using original advanced main tunnel face at No. seven transverse passage-ways 13
2 110KW propeller fans (i.e. four fan device), match the bis- air hoses of φ 1800mm (i.e. the 4th air hose 6), the 4th air hose 6 is walked flat
Row pilot tunnel 2 gives face air feed through No. nine transverse passage-ways 15.To prevent the reflux of the waste air of No. seven transverse passage-ways 13 and No. eight transverse passage-ways 14,
Add jet blower that waste air is guided to be flowed from parallel pilot tunnel 2 to 1 direction of main tunnel in two transverse passage-ways respectively.
To sum up, by means of above-mentioned technical proposal of the invention, the characteristics of for current long range high methane tunnel, by setting
A set of ventilation scheme that changes with construction speed and can be adjusted is counted, drafting efficiency is optimized, solves the problems, such as tunnel ventilation,
Transport capacity is strengthened, construction efficiency is improved, has reference to similar engineering.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of long range high methane constructing tunnel method of ventilation, which comprises the following steps:
S1 is when excavating main tunnel face and not being connected by transverse passage-way between main tunnel (1) and parallel pilot tunnel (2), in main tunnel (1)
First blower and the first air hose (3) are set at hole, and the first air hose (3) extends to air feed at main tunnel face, in parallel pilot tunnel
(2) the second blower is set at hole and the second air hose (4), the second air hose (4) extends to air feed at parallel pilot drift；
S2 passes through No.1 cross at No. three transverse passage-ways (9) of excavation between advanced main tunnel face and main tunnel (1) and parallel pilot tunnel (2)
When channel (7) is connected, main tunnel face is by the first air hose (3) air feed, and parallel pilot drift is by the second air hose (4) air feed, together
When third blower and third air hose (5) are set at parallel pilot tunnel (2) hole, third air hose (5) is through parallel pilot tunnel (2) and No. three
Advanced main tunnel face position air feed at No. three transverse passage-ways (9) is extended to after transverse passage-way (9)；
S3 passes through No.1 between advanced main tunnel face and main tunnel (1) and parallel pilot tunnel (2) at No. five transverse passage-ways (11) of excavation
When transverse passage-way (7), No. two transverse passage-ways (8), No. three transverse passage-ways (9) and No. four transverse passage-way (10) conductings, main tunnel face is by first
Air hose (3) air feed, parallel pilot drift is by the second air hose (4) air feed, while by No.1 transverse passage-way (7), No. two transverse passage-ways (8)
It is closed with No. three transverse passage-ways (9), third air hose (5) extends to No. five after parallel pilot tunnel (2) and No. five transverse passage-ways (11) and horizontal leads to
Advanced main tunnel face position air feed at road (11)；
S4 passes through No. four at No. seven transverse passage-ways (13) of excavation between advanced main tunnel face and main tunnel (1) and parallel pilot tunnel (2)
When transverse passage-way (10) is connected, main tunnel face by the first air hose (3) air feed, parallel pilot drift by the second air hose (4) air feed,
Advanced main tunnel face is by third air hose (5) air feed at No. five transverse passage-ways (11), while the setting on front side of No. four transverse passage-ways (10)
Parallel pilot tunnel (2) hole is isolated air door (16) with No. four transverse passage-ways (10), installs gas in the front and rear sides of air door (16)
Sensor (17), and after the second blower and third blower are moved to the forward position of air door (16), in the front side of air door (16)
Position setting four fan device and the 4th air hose (6), the 4th air hose (6) extend after parallel pilot tunnel (2) and No. seven transverse passage-ways (13)
To advanced main tunnel face position air feed at No. seven transverse passage-ways (13)；
S5 passes through No. four at No. seven transverse passage-ways (13) of excavation between advanced main tunnel face and main tunnel (1) and parallel pilot tunnel (2)
When transverse passage-way (10), No. five transverse passage-ways (11) and No. six transverse passage-way (12) conductings, parallel pilot drift is supplied by the second air hose (4)
Wind, advanced main tunnel face is by the 4th air hose (6) air feed at No. seven transverse passage-ways (13), while removing the first blower and the first air hose
(3), third air hose (5) extends to air feed at main tunnel face after parallel pilot tunnel (2) and No. five transverse passage-ways (11), and at No. four
A jet blower is respectively installed at transverse passage-way (10), No. five transverse passage-ways (11) and No. six transverse passage-ways (12)；
S6 passes through No. four at No. nine transverse passage-ways (15) of excavation between advanced main tunnel face and main tunnel (1) and parallel pilot tunnel (2)
Transverse passage-way (10), No. five transverse passage-ways (11), No. six transverse passage-ways (12), No. seven transverse passage-ways (13) and No. eight transverse passage-way (14) conductings
When, main tunnel face removes the second blower and the second air hose (4) by third air hose (5) air feed, and the 4th air hose (6) is through flat
Advanced main tunnel face position air feed at No. nine transverse passage-ways (15) is extended to after row pilot tunnel (2) and No. nine transverse passage-ways (15), and
A jet blower is respectively installed at No. seven transverse passage-ways (13) and No. eight transverse passage-ways (14).
2. long range high methane constructing tunnel method of ventilation according to claim 1, which is characterized in that first wind
Machine, third blower, four fan device are the propeller fan of two 110KW.
3. long range high methane constructing tunnel method of ventilation according to claim 2, which is characterized in that first wind
Pipe (3), third air hose (5) and the 4th air hose (6) are double air hoses of φ 1800mm.
4. long range high methane constructing tunnel method of ventilation according to claim 3, which is characterized in that second wind
Machine is the propeller fan of 2 55KW.
5. long range high methane constructing tunnel method of ventilation according to claim 4, which is characterized in that second wind
Manage single air hose that (4) are φ 1500mm.
6. long range high methane constructing tunnel method of ventilation according to claim 5, which is characterized in that in S4, institute
The second blower, third blower and four fan device is stated to be respectively positioned at 20m on front side of No. four transverse passage-ways (10).
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| CN201710286570.5A CN106948852B (en) | 2017-04-27 | 2017-04-27 | A kind of long range high methane constructing tunnel method of ventilation |
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| CN201710286570.5A CN106948852B (en) | 2017-04-27 | 2017-04-27 | A kind of long range high methane constructing tunnel method of ventilation |
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| CN106948852B true CN106948852B (en) | 2019-02-19 |
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| CH451232A (en) * | 1967-03-14 | 1968-05-15 | Expilly Paul | Construction method of at least two parallel galleries |
| CN101215973A (en) * | 2007-12-29 | 2008-07-09 | 中铁隧道集团有限公司 | Tunnel construction jet flow laneway ventilation method |
| 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 |
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