CN111810214A - Tunnel construction ventilation heat preservation system - Google Patents
Tunnel construction ventilation heat preservation system Download PDFInfo
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- CN111810214A CN111810214A CN202010756897.6A CN202010756897A CN111810214A CN 111810214 A CN111810214 A CN 111810214A CN 202010756897 A CN202010756897 A CN 202010756897A CN 111810214 A CN111810214 A CN 111810214A
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- 238000004321 preservation Methods 0.000 title claims abstract description 125
- 238000009423 ventilation Methods 0.000 title claims abstract description 78
- 238000010276 construction Methods 0.000 title claims abstract description 44
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000001301 oxygen Substances 0.000 claims abstract description 48
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 48
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 238000012544 monitoring process Methods 0.000 claims description 24
- 238000009413 insulation Methods 0.000 claims description 19
- 239000000428 dust Substances 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000009746 freeze damage Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
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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
- E21F1/04—Air ducts
-
- 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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- 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
- E21F1/14—Air partitions; Air locks
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
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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
- E21F5/00—Means or methods for preventing, binding, depositing, or removing dust; Preventing explosions or fires
- E21F5/20—Drawing-off or depositing dust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
- F04D25/166—Combinations of two or more pumps ; Producing two or more separate gas flows using fans
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
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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)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ventilation (AREA)
Abstract
The invention provides a ventilation and heat preservation system for tunnel construction. The invention provides a ventilation and oxygen supply system for tunnel construction. First air curtain, form the heat preservation room between the second air curtain surrounds, the heat preservation room is used for heating cold air, the fresh suitable warm air of back process ventilation unit transmission to tunnel face place space, the heat preservation room sets up in the tunnel, can effectively reduce the transmission route when making ventilation unit transmission fresh suitable warm air, reduce calorific loss when making fresh suitable warm air transmit to tunnel face place space, continuous fresh suitable warm air inputs tunnel face place space, the temperature that makes tunnel face place space risees and keeps in certain temperature interval, with this effect that heaies up, keeps warm to air in the tunnel that reaches.
Description
Technical Field
The invention relates to the field of tunnel construction, in particular to a ventilation and heat insulation system for tunnel construction.
Background
The plateau area often has climatic conditions such as low temperature, oxygen deficiency and the like, particularly in winter construction, the temperature outside the tunnel reaches even minus 30 ℃, which greatly increases the engineering difficulty and cost, causes the construction period to be increased, and causes the personnel health damage and even endangers the life safety. Therefore, the research of the ventilation and oxygen supply system for tunnel construction in the plateau area is developed, and the guidance function is provided for the safe tunnel construction. The existing ventilation and oxygen supply system for plateau tunnel winter construction does not effectively solve the problems of lining freeze injury and personnel health damage caused by cold in tunnel construction. Among the heat preservation problem, if the air when the gaseous in-transit of pipe-line transportation heats, will receive air velocity of flow's influence, when the velocity of flow is too fast, the air heating is complete inadequately, when waiting to transmit to the tunnel face, air calorific loss is great, do not to continue to carry suitable temperature gas and make the temperature rising in the tunnel, also can not reach the heat preservation effect, and some heat preservation systems influence the normal construction in tunnel owing to set up unreasonable the converse, the tunnel construction ventilation heat preservation system that this patent provided has effectively solved the effective heated air in construction tunnel and has reached heat retaining engineering difficult problem in the tunnel.
Disclosure of Invention
The invention mainly aims to provide a ventilation and heat preservation system for tunnel construction, and aims to solve the problems of ventilation and oxygen supply inside a tunnel and temperature rise and heat preservation of air inside the tunnel.
In order to achieve the above object, the present invention provides a ventilation and thermal insulation system for tunnel construction, comprising:
the first air curtain is arranged inside the tunnel;
the second air curtain is arranged between the first air curtain and the tunnel face, and a heat preservation chamber is formed between the first air curtain and the second air curtain;
the heater is arranged in the heat preservation chamber and used for heating fresh cold air entering the heat preservation chamber from the outside;
and the ventilation device is communicated with the heat preservation chamber and the space where the tunnel face is located so as to convey the heated fresh air with proper temperature to the space where the tunnel face is located.
Preferably, the tunnel construction ventilation and heat preservation system further comprises:
and the temperature monitoring element is arranged in the heat preservation chamber and is used for monitoring the temperature of the heat preservation chamber in real time.
Preferably, the tunnel construction ventilation and heat preservation system further comprises:
the heat insulation curtain is arranged at the tunnel opening, and an auxiliary heat insulation chamber is formed between the heat insulation curtain and the first air curtain;
the heating pipe piece is arranged in the auxiliary heat preservation chamber and used for heating and preserving heat of air in the auxiliary heat preservation chamber;
the heat preservation curtain, the first air curtain and the second air curtain are sequentially distributed on a path leading from the tunnel portal to the tunnel face.
Preferably, the ventilation device comprises:
the first ventilation assembly is communicated with the heat preservation chamber and the space where the tunnel face is located;
the second ventilation assembly is communicated with the heat preservation chamber and the outside of the tunnel and is used for transmitting fresh cold air outside the tunnel into the heat preservation chamber;
the heat preservation chamber heats fresh cold air transmitted into the heat preservation chamber by the two-ventilation assembly, and fresh suitable-temperature air heated in the heat preservation chamber is transmitted to the space where the tunnel face is located through the first ventilation assembly.
Preferably, the first ventilation assembly comprises:
the first fan is arranged in the heat preservation chamber and is close to the second air curtain;
the first pipeline, first pipeline one end is connected first fan, and the other end extends tunnel face place space is used for transmitting fresh suitable warm air in the heat preservation room extremely tunnel face place space.
Preferably, the second ventilation assembly comprises:
the second fan is arranged outside the tunnel portal;
and one end of the second pipeline is connected with the second fan, the other end of the second pipeline penetrates through the first air curtain to extend to the heat preservation chamber, and a pipe orifice of the second pipeline, which is positioned in the heat preservation chamber, is close to the first air curtain and is used for conveying fresh cold air outside the tunnel to the heat preservation chamber.
Preferably, the first air curtain and the second air curtain each comprise:
the high-pressure fan is arranged inside the tunnel and used for generating high-pressure gas;
the main air pipe is connected with the high-pressure fan and used for conveying high-pressure air, and the main air pipe is annularly arranged along the section of the tunnel;
and the branch air pipes are arranged on the main air pipe, and the direction of the air sprayed by the branch air pipes forms a certain included angle with the cross section of the tunnel.
Preferably, the tunnel construction ventilation and heat preservation system further comprises:
an oxygen generation station;
the third pipeline, third pipeline one end is connected system oxygen station is used for carrying oxygen, and the other end is connected the first pipeline of first ventilation subassembly, first pipeline with fresh suitable warm air and oxygen carry extremely tunnel face place space.
Preferably, the tunnel construction ventilation and heat preservation system further comprises:
and the oxygen monitoring unit is arranged in the space where the tunnel face is located and connected with the oxygen generation station, and is used for monitoring the oxygen content in the space where the tunnel face is located in real time.
Preferably, the tunnel construction ventilation heat preservation system further includes a dust removal and sewage disposal device, the dust removal and sewage disposal device includes:
the dust removal fan is movably arranged in the space of the tunnel face;
and one end of the exhaust pipe is connected with the dust removal fan, and the other end of the exhaust pipe extends to the outside of the tunnel and is used for exhausting the dirty air in the tunnel.
According to the technical scheme, the problems of heating, heat preservation and the like of air in the tunnel are solved by using the first air curtain, the second air curtain, the heater and the ventilation device. The air in the heat preservation chamber is heated into suitable temperature air under the action of the heater, the suitable temperature air in the heat preservation chamber is conveyed to the space where the tunnel face is located by the ventilation device, the transmission path can be effectively reduced when the heat preservation chamber is arranged in the tunnel and the ventilation device transmits fresh suitable temperature air, so that the heat loss is reduced when the fresh suitable temperature air is transmitted to the space where the tunnel face is located, the air temperature in the space where the tunnel face is located is increased and kept in a certain temperature range by continuously inputting the fresh suitable temperature air, the effects of heating and heat preservation of the air in the tunnel are achieved, and fresh air is provided for constructors.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic structural view of an embodiment of a ventilation and heat preservation system for tunnel construction according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of the structure of FIG. 1 according to the present invention;
FIG. 3 is a schematic structural diagram of the first air curtain 11 of FIG. 1 according to the present invention;
fig. 4 is an enlarged schematic cross-sectional view of the main duct 110 shown in fig. 3 according to the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Tunnel construction ventilation |
10 | |
| 11 | The |
12 | |
| 13 | |
15 | |
| 16 | Auxiliary |
17 | |
| 18 | |
21 | |
| 22 | |
23 | |
| 24 | |
30 | |
| 31 | |
35 | |
| 110 | High- |
112 | |
| 113 | |
40 | |
| 50 | Space of |
26 | |
| 28 | Exhaust pipe |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
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.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a tunnel construction ventilation and thermal insulation system 100, as shown in fig. 1 to 2, including: the first air curtain 11 is arranged inside the tunnel; the second air curtain 12 is arranged between the first air curtain 11 and the tunnel face 40, and a heat preservation chamber 10 is formed between the first air curtain 11 and the second air curtain 12; the heater 13 is arranged in the heat preservation chamber 10, and is used for heating fresh cold air entering the heat preservation chamber 10 from the outside; and the ventilation device 21 is used for communicating the heat preservation chamber 10 with the space 50 where the tunnel face is located so as to convey the heated fresh air with proper temperature to the space 50 where the tunnel face is located.
In this embodiment, the planes of the first air curtain 11 and the second air curtain 12 are parallel to the cross section of the tunnel, the first air curtain 11 and the second air curtain 12 are movably disposed inside the tunnel, the first air curtain 11 and the second air curtain 12 enclose the heat preservation chamber 10 into a relatively independent and relatively sealed space, the air in the heat preservation chamber 10 is heated by the heater 13 to be suitable temperature air, and the ventilation device 21 delivers the fresh suitable temperature air in the heat preservation chamber 10 to the space 50 where the tunnel face is located.
It will be appreciated that the first curtain 11 and the second curtain 12 divide the tunnel into different cavities, such as the auxiliary insulating chamber 16, the insulating chamber 10 and the space 50 where the tunnel face is located. The heat preservation chamber 10 is arranged in the tunnel, the ventilation device conveys the air with proper temperature heated by the heat preservation chamber 10 to the space 50 where the tunnel face is located, the heat preservation chamber 10 is arranged in the tunnel, when the ventilation device transmits the air with proper temperature, the transmission path can be effectively reduced, the heat loss is reduced when the fresh air with proper temperature is transmitted to the space 50 where the tunnel face is located, the fresh air with proper temperature is continuously input into the space 50 where the tunnel face is located, the space 50 where the tunnel face is located achieves the effects of temperature rise and heat preservation, and fresh air is provided for constructors; the tunnel face 40 is continuously pushed forward along with the construction, the first air curtain 11 and the second air curtain 12 can be continuously pushed forward relative to the tunnel opening face, at the moment, the heat preservation chamber 10 enclosed by the first air curtain 11 and the second air curtain 12 is correspondingly pushed forward, the closer the heat preservation chamber 10 is to the tunnel face 40, the higher the temperature of the air conveyed into the space 50 of the tunnel face by the ventilation device is. Therefore, through the structure, the problems that the air is not heated completely due to the fact that the air is heated in the pipeline at an excessively high flow speed, and the heat loss of the air transmitted to the tunnel face 40 is large can be solved.
Specifically, the tunnel construction ventilation and heat preservation system 100 further includes: and the temperature monitoring element 15 is arranged in the heat preservation chamber 10, and is used for monitoring the temperature of the heat preservation chamber 10 in real time.
In this embodiment, the temperature monitoring component 15 monitors the temperature of the heat preservation chamber 10 in real time, the temperature monitoring component 15 has an electronic display screen, the real-time temperature of the heat preservation chamber 10 can be observed, the temperature monitoring component 15 can preset a temperature range, when the temperature is lower than the preset lowest temperature, the heater 13 works to heat the air in the heat preservation chamber 10, when the temperature is heated to be higher than the preset highest temperature, the heater 13 stops working to achieve the purpose of monitoring the temperature in the heat preservation chamber 10 in real time and controlling the temperature to be in a certain range, correspondingly, the temperature conveyed to the space 50 where the tunnel face is located by the ventilation device can also be controlled to be in a certain range, for example, the temperature is controlled to be 20-25 ℃.
Specifically, the tunnel construction ventilation and heat preservation system 100 further includes: the heat preservation curtain 17 is arranged at the tunnel portal, and an auxiliary heat preservation chamber 16 is formed between the heat preservation curtain 17 and the first air curtain 11; a heater pipe piece 18, wherein the heater pipe piece 18 is arranged in the auxiliary heat preservation chamber 16, and the heater pipe piece 18 is used for heating and preserving heat of air in the auxiliary heat preservation chamber 16; the heat preservation curtain 17, the first air curtain 11 and the second air curtain 12 are sequentially distributed on a path leading from the tunnel entrance to the tunnel face 40.
In this embodiment, heat preservation curtain 17 sets up in tunnel entrance to a cave face, and heat preservation curtain 17 is provided with the entry, and the artifical and construction vehicle's of being convenient for is current, and supplementary heat preservation room 16 is provided with warm braw pipe piece 18 for the air of supplementary heat preservation room 16 of heating prevents that the lining cutting that is located the tunnel entrance to a cave from being frost crack.
Specifically, the ventilation device includes: the first ventilation component is communicated with the heat preservation chamber 10 and the space 50 where the tunnel face is located; the second ventilation assembly is communicated with the heat preservation chamber 10 and the outside of the tunnel and is used for transmitting fresh cold air outside the tunnel into the heat preservation chamber 10; the heat preservation chamber 10 heats fresh cold air which is transmitted into the heat preservation chamber 10 by the ventilation component, and fresh suitable temperature air which is heated in the heat preservation chamber 10 is transmitted to the space 50 where the tunnel face is located through the first ventilation component.
In this embodiment, the ventilation device performs segmented air supply, one end of the second ventilation component is disposed outside the tunnel, the other end of the second ventilation component is communicated to the heat preservation chamber 10 in the tunnel, and is used for conveying air outside the tunnel into the heat preservation chamber 10 to be heated, one end of the first ventilation component is disposed inside the heat preservation chamber 10, and the other end of the first ventilation component extends to the space 50 where the tunnel face is located, and is used for conveying heated fresh air with proper temperature to the space 50 where the tunnel face is located.
Specifically, the first ventilation assembly includes: the first fan 21 is arranged in the heat preservation chamber 10 and close to the second air curtain 12; and one end of the first pipeline 22 is connected with the first fan 21, and the other end of the first pipeline 22 extends into the space 50 where the tunnel face is located, so that fresh air with proper temperature in the heat preservation chamber 10 is transmitted to the space 50 where the tunnel face is located.
Specifically, the second ventilation assembly includes: the second fan 23 is arranged outside the tunnel portal; and one end of the second pipeline 24 is connected with the second fan 23, the other end of the second pipeline 24 penetrates through the first air curtain 11 and extends to the heat preservation chamber 10, and a pipe orifice of the second pipeline 24, which is positioned in the heat preservation chamber 10, is close to the first air curtain 11 and is used for conveying fresh cold air outside the tunnel to the heat preservation chamber 10.
In this embodiment, the first ventilation assembly is used for delivering outside air to the heat preservation chamber 10, and the second ventilation assembly is used for delivering fresh air with proper temperature in the heat preservation chamber 10 to the space 50 where the tunnel face is located. The second fan 23 and the second pipeline 24 pump fresh cold air outside the tunnel to the heat preservation chamber 10, the fresh cold air delivered by the second pipeline 24 can be fully mixed and heated in the heat preservation chamber 10, and then the first fan 21 and the first pipeline 22 pump fresh air with proper temperature to the space 50 where the tunnel face is located, preferably, both the first fan 21 and the second fan 23 are axial flow fans.
Specifically, the first curtain 11 and the second curtain 12 each include: a high pressure fan 110, the high pressure fan 110 for generating high pressure gas; the main air pipe 112 is connected with the high-pressure fan 110 and used for conveying high-pressure air, and the main air pipe 112 is annularly arranged along the section of the tunnel; and the branch air pipes 113 are arranged on the main air pipe 112, and the direction of the air sprayed by the branch air pipes 113 forms a certain included angle with the cross section of the tunnel.
In this embodiment, the first air curtain 11 and the second air curtain 12 are respectively provided with a high pressure fan 110, a main air duct 112 and a branch air duct 113, the high pressure fan 110 is respectively disposed near the main air duct 112 and connected to the main air duct 112, the main air duct 112 is an annular duct and is attached to a wall surface of a tunnel, the high pressure fan 110 outputs high pressure gas to enter the main air duct 112 and is sprayed out through the branch air duct 113 to form an air curtain, and the branch air duct 113 is preferably a high pressure air spray pipe. The structural schematic diagram of the first air curtain 11 is shown in fig. 3, and the cross-sectional structural schematic diagram of the main air duct 110 is shown in fig. 4.
It can be understood that, the first air curtain 11 and the second air curtain 12 have the same structure, and the structural schematic diagram of the second air curtain 12 can also refer to fig. 3, the direction of the gas ejected by the branch duct 113 forms a certain included angle with the cross section of the tunnel, the planes of the first air curtain 11 and the second air curtain 12 are both parallel to the cross section of the tunnel, and the space in the heat preservation chamber 10 of the first air curtain 11 and the second air curtain 12 is isolated from the space outside the heat preservation chamber 10, so that the air flows of the two air curtains are relatively independent.
Specifically, the tunnel construction ventilation and heat preservation system 100 includes: an oxygen generation station 30; a third pipeline 31, one end of the third pipeline 31 is connected with the oxygen generation station 30 for delivering oxygen, the other end is connected with the first pipeline 22 of the first ventilation assembly, and the first pipeline 22 delivers fresh air and oxygen with proper temperature to the space 50 where the tunnel face is located.
In this embodiment, the oxygen generation station 30 may be disposed outside the tunnel to generate oxygen and transport the oxygen through a third pipeline 31, the third pipeline 31 passes through the auxiliary heat preservation chamber 16 and the heat preservation chamber 10 in the tunnel and is finally communicated with the second pipeline 24, the oxygen transported in the third pipeline 31 is mixed with fresh air with suitable temperature in the second pipeline 24 and is finally transported to the space 50 where the tunnel face is located through the second pipeline 24, so as to achieve the effect of heat preservation and oxygen supply for the space 50 where the tunnel face is located.
Specifically, the tunnel construction ventilation and heat preservation system 100 further includes: and the oxygen monitoring unit is arranged in the space 50 where the tunnel face is located and connected with the oxygen generation station 30 and is used for monitoring the oxygen content of the space 50 where the tunnel face is located in real time.
In this embodiment, the oxygen supply device further includes an oxygen monitoring component 35, the oxygen monitoring component 35 is disposed in the space 50 where the tunnel face is located and is close to the tunnel face 40, the oxygen monitoring component 35 is connected with the oxygen generation station 30, and the oxygen monitoring component 35 is used for monitoring the oxygen content in the space 50 where the tunnel face is located in real time.
It can be understood that oxygen monitoring component 35 monitors the oxygen content in tunnel face place space 50 and feeds back oxygen content data in real time for system oxygen station 30 to system oxygen station 30 adjusts output, carries out dynamic adjustment to tunnel face oxygen supply volume, and the oxygen safe and reliable that system oxygen station 30 made can directly carry into the tunnel through the pipeline and supply the use.
Specifically, still include dust removal waste fitting discharging, dust removal waste fitting discharging includes: the dust removal fan 26 is movably arranged at the front end of the tunnel face 40; and one end of the exhaust pipe 28 is connected with the dust removal fan 26, and the other end of the exhaust pipe 28 extends to the outside of the tunnel and is used for exhausting foul air in the tunnel.
In this embodiment, the dust removing fan 26 is connected to the exhaust pipe 28 to exhaust dirty air (including gas and dust) in the space 50 where the tunnel face is located to the outside of the tunnel, and the dust removing fan 26 can move along with the forward movement of the tunnel working face (i.e. the tunnel face 40), so as to ensure that the dirty air near the tunnel working face (i.e. the tunnel face 40) can be exhausted in time.
The tunnel construction ventilation and heat preservation system 100 provided by the invention is not only suitable for the construction tunnel in plateau climate, but also suitable for other construction tunnels which need heat preservation and oxygen supply treatment.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The utility model provides a tunnel construction ventilation heat preservation system which characterized in that includes:
the first air curtain is arranged inside the tunnel;
the second air curtain is arranged between the first air curtain and the tunnel face, and a heat preservation chamber is formed between the first air curtain and the second air curtain;
the heater is arranged in the heat preservation chamber and used for heating fresh cold air entering the heat preservation chamber from the outside;
and the ventilation device is communicated with the heat preservation chamber and the space where the tunnel face is located so as to convey the heated fresh air with proper temperature to the space where the tunnel face is located.
2. The tunnel construction ventilation and insulation system of claim 1, further comprising:
and the temperature monitoring element is arranged in the heat preservation chamber and is used for monitoring the temperature of the heat preservation chamber in real time.
3. The tunnel construction ventilation and insulation system of claim 1, further comprising:
the heat insulation curtain is arranged at the tunnel opening, and an auxiliary heat insulation chamber is formed between the heat insulation curtain and the first air curtain;
the heating pipe piece is arranged in the auxiliary heat preservation chamber and used for heating and preserving heat of air in the auxiliary heat preservation chamber;
the heat preservation curtain, the first air curtain and the second air curtain are sequentially distributed on a path leading from the tunnel portal to the tunnel face.
4. The tunnel construction ventilation and insulation system of claim 1, wherein the ventilation device comprises:
the first ventilation assembly is communicated with the heat preservation chamber and the space where the tunnel face is located;
the second ventilation assembly is communicated with the heat preservation chamber and the outside of the tunnel and is used for transmitting fresh cold air outside the tunnel into the heat preservation chamber;
the heat preservation chamber heats fresh cold air transmitted into the heat preservation chamber by the two-ventilation assembly, and fresh suitable-temperature air heated in the heat preservation chamber is transmitted to the space where the tunnel face is located through the first ventilation assembly.
5. The tunnel construction ventilation and thermal insulation system of claim 4, wherein the first ventilation assembly comprises:
the first fan is arranged in the heat preservation chamber and is close to the second air curtain;
the first pipeline, first pipeline one end is connected first fan, and the other end extends tunnel face place space is used for transmitting fresh suitable warm air in the heat preservation room extremely tunnel face place space.
6. The tunnel construction ventilation and thermal insulation system of claim 4, wherein the second ventilation assembly comprises:
the second fan is arranged outside the tunnel portal;
and one end of the second pipeline is connected with the second fan, the other end of the second pipeline penetrates through the first air curtain to extend to the heat preservation chamber, and a pipe orifice of the second pipeline, which is positioned in the heat preservation chamber, is close to the first air curtain and is used for conveying fresh cold air outside the tunnel to the heat preservation chamber.
7. The tunnel construction ventilation and insulation system of any one of claims 1 to 6, wherein the first curtain and the second curtain each comprise:
the high-pressure fan is arranged inside the tunnel and used for generating high-pressure gas;
the main air pipe is connected with the high-pressure fan and used for conveying high-pressure air, and the main air pipe is annularly arranged along the section of the tunnel;
and the branch air pipes are arranged on the main air pipe, and the direction of the air sprayed by the branch air pipes forms a certain included angle with the cross section of the tunnel.
8. The tunnel construction ventilation and insulation system of claim 5, further comprising:
an oxygen generation station;
the third pipeline, third pipeline one end is connected system oxygen station is used for carrying oxygen, and the other end is connected the first pipeline of first ventilation subassembly, first pipeline with fresh suitable warm air and oxygen carry extremely tunnel face place space.
9. The tunnel construction ventilation and insulation system of claim 8, further comprising:
and the oxygen monitoring unit is arranged in the space where the tunnel face is located and connected with the oxygen generation station, and is used for monitoring the oxygen content in the space where the tunnel face is located in real time.
10. The tunnel construction ventilation and insulation system of claim 1, further comprising a dust and sewage removal device, the dust and sewage removal device comprising:
the dust removal fan is movably arranged in the space of the tunnel face;
and one end of the exhaust pipe is connected with the dust removal fan, and the other end of the exhaust pipe extends to the outside of the tunnel and is used for exhausting the dirty air in the tunnel.
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| CN202010756897.6A CN111810214A (en) | 2020-07-30 | 2020-07-30 | Tunnel construction ventilation heat preservation system |
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| CN202010756897.6A CN111810214A (en) | 2020-07-30 | 2020-07-30 | Tunnel construction ventilation heat preservation system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461488A (en) * | 2020-11-09 | 2021-03-09 | 中铁二十局集团有限公司 | Tunnel high-pressure air curtain test device, method and system |
| CN113565553A (en) * | 2021-07-22 | 2021-10-29 | 中交第二公路工程局有限公司 | Ventilation system and general gas tunnel comprehensive rapid disposal system |
| CN113586120A (en) * | 2021-08-31 | 2021-11-02 | 淮阴工学院 | Combined hot air jet heat preservation device for cold region tunnel and control method |
| CN114033462A (en) * | 2021-07-21 | 2022-02-11 | 绍兴文理学院 | Positive accumulated temperature ventilation regulation and control method for cold region tunnel |
| CN114922674A (en) * | 2022-03-23 | 2022-08-19 | 中铁隧道局集团建设有限公司 | Multifunctional urban tunnel group ventilation system and construction method |
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2020
- 2020-07-30 CN CN202010756897.6A patent/CN111810214A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461488A (en) * | 2020-11-09 | 2021-03-09 | 中铁二十局集团有限公司 | Tunnel high-pressure air curtain test device, method and system |
| CN114033462A (en) * | 2021-07-21 | 2022-02-11 | 绍兴文理学院 | Positive accumulated temperature ventilation regulation and control method for cold region tunnel |
| CN114033462B (en) * | 2021-07-21 | 2024-01-12 | 绍兴文理学院 | Method for regulating and controlling positive accumulation temperature ventilation of tunnel in cold region |
| CN113565553A (en) * | 2021-07-22 | 2021-10-29 | 中交第二公路工程局有限公司 | Ventilation system and general gas tunnel comprehensive rapid disposal system |
| CN113586120A (en) * | 2021-08-31 | 2021-11-02 | 淮阴工学院 | Combined hot air jet heat preservation device for cold region tunnel and control method |
| CN114922674A (en) * | 2022-03-23 | 2022-08-19 | 中铁隧道局集团建设有限公司 | Multifunctional urban tunnel group ventilation system and construction method |
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