CN108756989B - Tunnel ventilation system and tunnel ventilation method - Google Patents
Tunnel ventilation system and tunnel ventilation method Download PDFInfo
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- CN108756989B CN108756989B CN201810767157.5A CN201810767157A CN108756989B CN 108756989 B CN108756989 B CN 108756989B CN 201810767157 A CN201810767157 A CN 201810767157A CN 108756989 B CN108756989 B CN 108756989B
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- 238000009423 ventilation Methods 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000009412 basement excavation Methods 0.000 claims abstract description 56
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000005192 partition Methods 0.000 claims description 36
- 238000010276 construction Methods 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 230000009471 action Effects 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 235000021184 main course Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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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
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/14—Layout of tunnels or galleries; Constructional features of tunnels or galleries, not otherwise provided for, e.g. portals, day-light attenuation at tunnel openings
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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)
- Environmental & Geological Engineering (AREA)
- Ventilation (AREA)
Abstract
The invention provides a tunnel ventilation system and a tunnel ventilation method, comprising providing a tunnel ventilation system, wherein the tunnel ventilation system comprises a drain hole, a left line, a right line, a flat guide, a total air inlet lane, a total return air lane, a plurality of left transverse lanes and a plurality of right transverse lanes, the total air inlet lane is connected with the right line and the drain hole, the total return air lane is communicated with the left line, the left lane is communicated with the flat guide and the left line, and the right lane is communicated with the flat guide and the right line; an air chamber is arranged at the communication part of the main air inlet lane and the right line; the method comprises the following steps: constructing a first flat-guide excavation surface, a left excavation surface of a left line and a right excavation surface of a right line, wherein the first flat-guide excavation surface is constructed in advance by a preset distance relative to the left excavation surface of the left line and the right excavation surface of the right line; a left channel which is communicated with the flat guide and the left line is arranged between the two left transverse channels, and a right channel which is communicated with the flat guide and the right line is arranged between the two right transverse channels; the front air wall moves forward to extend the plenum. The air chamber is extended forwards in stages, so that the pressure of one-time long-distance ventilation is relieved, and the ventilation efficiency is improved.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a tunnel ventilation system and a tunnel ventilation method for long-distance construction of extra-long tunnels.
Background
In the tunnel construction of railways, highways, water conservancy, hydropower, industrial and mining projects, national defense projects, urban subway projects and the like in China, ventilation is an indispensable technical link, and ventilation technology is generally a technical bottleneck for controlling the construction of extra-long tunnels. The tunnel construction ventilation mode can be divided into two types of air duct type ventilation and roadway type ventilation according to the type of an air duct and the installation position of a ventilator. The main fan long air pipe press-in type ventilation mode is used in the early stage more, and the mode has the defects that the main fan long air pipe press-in type ventilation mode is difficult to overcome, such as a large number of fans are arranged, the power is high, the fans are required to be detached and moved frequently, the wind flow direction is not easy to control, the problems that the sewage wind circulation exists, the multi-working-face construction ventilation is difficult to solve and the like. At present, a tunnel type jet ventilation mode is adopted more, and the mode is suitable for a long and large tunnel with parallel pilot pits, and is characterized in that a complete wind flow circulation system is formed by a front transverse passage and a flat pilot pit, and a local wind pipe type ventilation is assisted to a single-head tunnel in front of the flat pilot pit and the front pilot pit. Roadway ventilation is an effective method for solving the problem of ventilation in construction of long and large tunnels in the past and the present, and is still a main method in the future.
In new railway lines at present in China, the number of extra-long tunnel projects is gradually increased, and under the condition of compacting in construction period, the horizontal guide is increased so as to form a main scheme that multi-working tunneling construction becomes a mode of constructing a plurality of extra-long tunnels, but the construction progress is accelerated by adopting a mode of trackless transportation inclined shafts, so that the pollution of an internal combustion engine is more serious, the integral ventilation efficiency is difficult to ensure, and even the safety of constructors is difficult to ensure.
At present, the common practice of construction ventilation for the multiple working surfaces of the extra-long railway double-track tunnel (double-hole sub-repair) leveling guide exceeding 10Km is roadway ventilation, which comprises the following specific steps: and excavating an inclined shaft which is obliquely communicated with the tunnel above the tunnel with a certain length away from the tunnel portal, sucking fresh air at the inclined shaft portal by an axial flow fan, conveying the fresh air to the tunnel face of one tunnel through an air pipe, pumping the air of the tunnel face to the other tunnel through an exhaust fan of a transverse channel near the tunnel face, and discharging the air out of the tunnel through a plurality of jet flow fans arranged along the tunnel. The disadvantage of this ventilation is that: fresh air pumped by the axial flow fan from the outside of the inclined shaft hole is required to be conveyed to the tunnel face through the air pipe by a longer distance, more air pipes are required to be consumed, the longer air pipe has a larger air leakage rate, and the ventilation efficiency is difficult to ensure. In addition, because the inclined shaft mouth axial flow fan needs to be blown to the vicinity of the face at one time, when the air supply distance is overlong, the fan needs long-time high-power operation, and the power consumption is big, and the fan damage is great, and operation maintenance cost is high.
Disclosure of Invention
A first object of the present invention is to provide a tunnel ventilation system for long distance construction of extra-long tunnels.
The second object of the invention is to provide a tunnel ventilation method for long-distance construction of extra-long tunnels.
In order to achieve the first object, the tunnel ventilation system provided by the invention comprises a drain hole, a left line, a right line, a flat guide, a total air inlet roadway, a total return air roadway, a plurality of left transverse roads and a plurality of right transverse roads, wherein the total air inlet roadway is connected with the right line and the drain hole, the total return air roadway is communicated with the left line, the left line and the right line are respectively arranged at two sides of the flat guide, the left transverse road is positioned between the left line and the flat guide, and the right transverse road is positioned between the right line and the flat guide; a left channel is arranged between the two left transverse channels, the left channel is communicated with the flat guide and the left line, a right channel is arranged between the two right transverse channels, and the right channel is communicated with the flat guide and the right line; an air chamber is arranged at the communication position of the main air inlet lane and the right line, and axial flow fans are arranged on the left air wall, the front air wall and the rear air wall of the air chamber; along the construction direction, the first excavation face of flat guide is located the place ahead of the left excavation face of left line and the right excavation face of right line.
According to the scheme, the integral ventilation is performed through the water drain hole, the left line, the right line, the flat guide, the total air inlet lane, the total air return lane, the left transverse lanes and the right transverse lanes, and the pressure of one-time long-distance ventilation can be relieved.
In a preferred embodiment, the tunnel ventilation system comprises at least two main crossroads, which are located behind the level guide, the left crossroad and the right crossroad in the construction direction.
In a preferred scheme, a main channel is arranged between the main transverse channels, and the main channel is communicated with the left line and the right line.
In a preferred embodiment, a jet fan is arranged in the main channel.
In a preferred embodiment, the jet fans are arranged in the left and right lanes.
The left excavation surface and the right excavation surface are both positioned in front of the front air wall, and the air wall is arranged in the right channel; a left partition part is arranged in the left line, the left partition part is opposite to the left excavation surface in a spacing way, and the left partition part spans at least two left transverse roads; the right line is internally provided with a right partition part, the right partition part is opposite to the right excavation surface in a spacing way, and the right partition part spans at least two right transverse roads.
In order to achieve the second objective, the present invention provides a tunnel ventilation method, including providing a tunnel ventilation system, where the tunnel ventilation system includes a spillway tunnel, a left line, a right line, a horizontal guide, a total air intake roadway, a total return roadway, a plurality of left lateral lanes and a plurality of right lateral lanes, the total air intake roadway connects the right line and the spillway tunnel, the total air intake roadway connects the left line, the left line and the right line are respectively arranged on two sides of the horizontal guide, the left lateral lanes are located between the left line and the horizontal guide, and the right lateral lanes are located between the right line and the horizontal guide; a left channel is arranged between the two left transverse channels, the left channel is communicated with the flat guide and the left line, a right channel is arranged between the two right transverse channels, and the right channel is communicated with the flat guide and the right line; an air chamber is arranged at the communication position of the main air inlet lane and the right line, and axial flow fans are arranged on the left air wall, the front air wall and the rear air wall of the air chamber; the method comprises the following steps: constructing a first flat-guide excavation surface, a left excavation surface of a left line and a right excavation surface of a right line, wherein the first flat-guide excavation surface is constructed in advance by a preset distance relative to the left excavation surface of the left line and the right excavation surface of the right line; a left channel which is communicated with the flat guide and the left line is arranged between the two left transverse channels, and a right channel which is communicated with the flat guide and the right line is arranged between the two right transverse channels; the front air wall moves forward to extend the plenum.
Therefore, the air chamber is extended forwards, the multi-working-surface construction in front of tunneling can be supplied, the pressure of one-time long-distance ventilation is relieved, dynamic management is formed, the high requirement of the whole fan equipment configuration can be reduced, and the construction wind requirement can be met; meanwhile, the cost investment of the air duct, the fan, personnel and the like is greatly reduced in the overall ventilation cost management, and the benefit is optimized. The whole ventilation is carried out through a water drain hole, a left line, a right line, a flat guide, a total air inlet lane, a total air return lane, a plurality of left transverse lanes and a plurality of right transverse lanes, so that the pressure of one-off long-distance ventilation can be relieved.
In a preferred embodiment, the tunnel ventilation system comprises at least two main crossroads, which are located behind the level guide, the left crossroad and the right crossroad in the construction direction; a main channel is arranged between the main transverse channels, and the main channel is communicated with the left line and the right line.
In a preferred scheme, jet fans are arranged in the main channel, and jet fans are arranged in the left channel and the right channel.
The left excavation face and the right excavation face are both positioned in front of the front air wall along the construction direction, and the air wall is arranged in the right channel; a left partition part is arranged in the left line, the left partition part is opposite to the left excavation surface in a spacing way, and the left partition part spans at least two left transverse roads; the right line is internally provided with a right partition part, the right partition part is opposite to the right excavation surface in a spacing way, and the right partition part spans at least two right transverse roads.
Drawings
FIG. 1 is a schematic view of the structure of the plenum of an embodiment of the tunnel ventilation system of the present invention when the plenum has not been extended forward.
FIG. 2 is a schematic view of the structure of the air chamber of the tunnel ventilation system embodiment of the present invention after the air chamber is first extended.
FIG. 3 is a schematic view of the structure of the plenum after a second forward extension of an embodiment of the tunnel ventilation system of the present invention.
The invention is further described below with reference to the drawings and examples.
Detailed Description
Referring to fig. 1 to 3, the tunnel ventilation system 100 of the present embodiment includes a drain hole 1, a left line 2, a right line 3, a flat guide 5, a total air intake 6, a total air return 7, a plurality of left lateral passages 8, and a plurality of right lateral passages 9, the direction along the tunnel construction being the front direction, the total air intake 6 connecting the right line 3 and the drain hole 1, the total air return 7 communicating with the left line 2, the left line 2 and the right line 3 being respectively disposed on both sides of the flat guide 5, the left lateral passage 8 being located between the left line 2 and the flat guide 5, the right lateral passage 9 being located between the right line 3 and the flat guide 5; a left channel 10 is arranged between the two left transverse channels 8, the left channel 10 is communicated with the flat guide 5 and the left line 2, a right channel 11 is arranged between the two right transverse channels 9, and the right channel 11 is communicated with the flat guide 5 and the right line 3; an air chamber 12 is arranged at the communication position of the main air inlet lane 6 and the right line 3, and axial flow fans 17 are distributed on a left air wall 13, a front air wall 15 and a rear air wall 16 of the air chamber 12. Along the construction direction, the left excavation face 22 and the right excavation face 23 are both positioned in front of the front wind wall 15, and the first excavation face 21 of the flat guide 5 is positioned in front of the left excavation face 22 of the left line 2 and the right excavation face 23 of the right line 3. An air wall 24 is arranged in the right channel 11. The solid arrows in the drawing indicate the flow of the inlet air and the open arrows in the drawing indicate the flow of the return air.
The tunnel ventilation system 100 includes at least two main courses 18, the main courses 18 being located rearward of the level guides 5, the left courses 8, and the right courses 9 in the construction direction. A main channel 19 is arranged between the main transverse channels 18, and the main channel 19 is communicated with the left line 2 and the right line 3. A jet fan 20 is arranged in the main channel 19. Jet fans 20 are distributed in the flat guide 5, the left line 2, the left channel 10 and the right channel 11. A left partition part 25 is arranged in the left line 2, the left partition part 25 is opposite to the left excavation surface 22 in a spaced mode, and the left partition part 25 spans at least two left transverse roads 8; a right partition 26 is arranged in the right line 3, the right partition 26 is opposite to the right excavation face 23 in a spaced manner, and the right partition 26 spans at least two right crossroads 9. The first face 28 of the left partition 25 is adjacent to the left excavated surface 22, the second face 29 of the left partition 25 is remote from the left excavated surface 22, the third face 30 of the right partition 26 is adjacent to the right excavated surface 23, and the fourth face 31 of the left partition 25 is remote from the right excavated surface 23. Along the construction direction, a right channel 11 is arranged between the front wind wall 15 and the fourth surface 31. Jet motors 20 are arranged in the main air inlet lane 6 and the main air return lane 7 to improve ventilation efficiency.
A tunnel ventilation method comprising the steps of: step 1, constructing a first excavation surface 21, a left excavation surface 22 and a right excavation surface 23, wherein the first excavation surface 21 of the flat guide 5 is constructed in advance by a preset distance relative to the left excavation surface 22 of the left line 2 and the right excavation surface 23 of the right line 3, and the preset distance is 2 km; step 2, arranging a left channel 10 which is communicated with the flat guide 5 and the left line 2 between two left transverse channels 8, arranging a right channel 11 which is communicated with the flat guide 5 and the right line 3 between two right transverse channels 9, and constructing a first surface 28, a second surface 29, a third surface 30 and a fourth surface 31 at the same time, so that the left partition part 25 and the right partition part 26 are moved forwards; in step 3, the front air wall 15 is moved forward to extend the plenum 12. In the long-distance construction of an extra-long tunnel, the above three steps may be cyclically performed as the tunnel is constructed forward to ventilate in the long-distance construction of the tunnel.
Referring to FIG. 1, the front air wall 15 is shown in a first position when the air chamber 12 has not been extended forward.
Referring to fig. 2, at this time, the left air wall 13, the front air wall 15, the rear air wall 16 and the air wall 24 enclose an air chamber 12, the air chamber 12 is extended forward for the first time, the front air wall 15 is moved forward from a first position to a second position, an air wall 27 is disposed at the first position, an axial flow motor 17 is disposed on the air wall 27, and the air wall 27 can accelerate the flow rate of the air. Jet motors 20 are arranged in the flat guide 5 and the left line 2, and the jet motors 20 can accelerate the flow rate of return air.
Referring to fig. 3, at this time, the left air wall 13, the front air wall 15, the rear air wall 16 and the air wall 24 enclose an air chamber 12, the air chamber 12 is extended forward for the second time, the front air wall 15 is moved forward from the second position to the third position, the air wall 32 is disposed at the second position, the air wall 32 is provided with an axial flow motor 17, and the air wall 27 can accelerate the flow rate of the air. Jet motors 20 are arranged in the flat guide 5 and the left line 2, and the jet motors 20 can accelerate the flow rate of return air.
Along the vertical direction, the total air return tunnel 7 is located above the drain hole 1, so that an air pressure difference formed by a natural height difference exists between the air return tunnel 7 and the drain hole 1, and air flows sequentially pass through the drain hole 1 and the total air inlet tunnel 6 to enter the air chamber 12 under the action of the air pressure difference. The air flow in the air chamber 12 flows along the illustrated solid arrows under the action of the axial flow fan 17 to form air intake, the air intake flows back along the illustrated imaginary center arrows after encountering the first excavation surface 21, the left excavation surface 22, the right excavation surface 23, the first surface 28, the second surface 29, the third surface 30 and the fourth surface 31 to form return air, and the return air finally flows out through the total return air lane 7, so that the flow speed of the return air can be accelerated under the action of the jet flow fan 20.
The air chamber 12 is extended forward in stages, the positions of the air walls in the right line 3 are adjusted in stages, and the whole tunnel long-distance construction ventilation is divided into stages, so that a stage-type mixed ventilation mode is formed. The multi-working-face construction in front of tunneling can be supplied, the pressure of one-time long-distance ventilation is relieved, dynamic management is formed, the high requirement of the whole fan equipment configuration can be reduced, and the construction wind requirement can be met; meanwhile, the cost investment of the air duct, the fan, personnel and the like is greatly reduced in the overall ventilation cost management, and the benefit is optimized. The whole ventilation is carried out through the water drain hole 1, the left line 2, the right line 3, the flat guide 5, the total air inlet lane 6, the total air return lane 7, the left transverse lanes 8 and the right transverse lanes 9, so that the pressure of one-time long-distance ventilation can be relieved. The jet fan 20 adjusts the wind pressure to further accelerate the return air speed, lighten the load of the overall air inlet, and simultaneously improve the ventilation efficiency of the whole ventilation system, thereby better ensuring the construction organization and the construction safety of the tunnel.
Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, but is merely preferred embodiments of the invention, and any modifications, equivalents, improvements, etc. within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A tunnel ventilation system, characterized by: the water drainage device comprises a water drainage hole, a left line, a right line, a flat guide, a total air inlet lane, a total air return lane, a plurality of left transverse lanes and a plurality of right transverse lanes, wherein the total air inlet lane is connected with the right line and the water drainage hole, the total air return lane is communicated with the left line, the left line and the right line are respectively arranged at two sides of the flat guide, the left transverse lane is positioned between the left line and the flat guide, and the right transverse lane is positioned between the right line and the flat guide;
a left channel is arranged between the two left transverse channels, the left channel is communicated with the flat guide and the left line, a right channel is arranged between the two right transverse channels, and the right channel is communicated with the flat guide and the right line;
an air chamber is arranged at the communication position of the total air inlet lane and the right line, and axial flow fans are arranged on the left air wall, the front air wall and the rear air wall of the air chamber;
along the construction direction, the first flat-guide excavation surface is positioned in front of the left excavation surface of the left line and the right excavation surface of the right line;
along the vertical direction, the total return airway is positioned above the water drain hole, and an air pressure difference formed by a natural height difference exists between the return airway and the water drain hole.
2. The tunnel ventilation system of claim 1, wherein:
the tunnel ventilation system comprises at least two main transverse channels, and the main transverse channels are positioned behind the flat guide, the left transverse channel and the right transverse channel along the construction direction.
3. The tunnel ventilation system of claim 2, wherein:
a main channel is arranged between the main transverse channels, and the main channel is communicated with the left line and the right line.
4. A tunnel ventilation system according to claim 3, characterized in that:
and a jet fan is arranged in the main channel.
5. The tunnel ventilation system of claim 4, wherein:
the jet fan is arranged in the left channel and the right channel.
6. The tunnel ventilation system according to any one of claims 1 to 5, wherein:
the left excavation surface and the right excavation surface are both positioned in front of the front air wall, and an air wall is arranged in the right channel;
a left partition part is arranged in the left line, the left partition part is opposite to the left excavation surface in a spacing way, and the left partition part spans at least two left transverse roads;
a right partition part is arranged in the right line, the right partition part is opposite to the right excavation surface in a spacing way, and the right partition part spans at least two right transverse roads.
7. A method of ventilating a tunnel, comprising:
the tunnel ventilation system comprises a water drain hole, a left line, a right line, a flat guide, a total air inlet lane, a total air return lane, a plurality of left transverse lanes and a plurality of right transverse lanes, wherein the total air inlet lane is connected with the right line and the water drain hole, the total air return lane is communicated with the left line, the left line and the right line are respectively arranged on two sides of the flat guide, the left transverse lane is positioned between the left line and the flat guide, and the right transverse lane is positioned between the right line and the flat guide;
an air chamber is arranged at the communication position of the total air inlet lane and the right line, and axial flow fans are arranged on the left air wall, the front air wall and the rear air wall of the air chamber;
the method comprises the following steps:
constructing the first flat excavation surface, the left excavation surface of the left line and the right excavation surface of the right line, wherein the first excavation surface is constructed in advance by a preset distance relative to the left excavation surface and the right excavation surface;
a left road communicating the flat guide and the left line is arranged between the two left transverse roads, and a right road communicating the flat guide and the right line is arranged between the two right transverse roads;
the front air wall moves forward to extend the plenum.
8. The tunnel ventilation method according to claim 7, wherein:
the tunnel ventilation system comprises at least two main transverse channels, and the main transverse channels are positioned behind the flat guide, the left transverse channel and the right transverse channel along the construction direction;
a main channel is arranged between the main transverse channels, and the main channel is communicated with the left line and the right line.
9. The tunnel ventilation method of claim 8, wherein:
jet fans are arranged in the main channel, and jet fans are arranged in the left channel and the right channel.
10. The tunnel ventilation method according to any one of claims 7 to 9, wherein:
along the construction direction, the left excavation surface and the right excavation surface are both positioned in front of the front air wall, and an air wall is arranged in the right channel;
a left partition part is arranged in the left line, the left partition part is opposite to the left excavation surface in a spacing way, and the left partition part spans at least two left transverse roads;
a right partition part is arranged in the right line, the right partition part is opposite to the right excavation surface in a spacing way, and the right partition part spans at least two right transverse roads.
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| CN201810767157.5A CN108756989B (en) | 2018-07-13 | 2018-07-13 | Tunnel ventilation system and tunnel ventilation method |
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| CN201810767157.5A CN108756989B (en) | 2018-07-13 | 2018-07-13 | Tunnel ventilation system and tunnel ventilation method |
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| CN108756989A CN108756989A (en) | 2018-11-06 |
| CN108756989B true CN108756989B (en) | 2024-04-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109958467A (en) * | 2019-04-16 | 2019-07-02 | 中铁十七局集团第二工程有限公司 | A kind of dust control by ventilation method for constructing tunnel |
| CN111425237B (en) * | 2020-03-31 | 2022-01-11 | 中铁五局集团有限公司 | Staged ventilation method based on complex cavern group construction |
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| 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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| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN207261032U (en) * | 2017-09-08 | 2018-04-20 | 石家庄铁路职业技术学院 | A kind of major long tunnel construction combined type ventilating system |
| CN208702445U (en) * | 2018-07-13 | 2019-04-05 | 中铁十九局集团第六工程有限公司 | A kind of Tunnel Ventilation System |
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2018
- 2018-07-13 CN CN201810767157.5A patent/CN108756989B/en active Active
Patent Citations (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 |
| CN102305095A (en) * | 2011-08-01 | 2012-01-04 | 湖南省交通规划勘察设计院 | Flat guide ventilation operation system of extra-long deeply-buried road tunnel |
| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN207261032U (en) * | 2017-09-08 | 2018-04-20 | 石家庄铁路职业技术学院 | A kind of major long tunnel construction combined type ventilating system |
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