CN116044489A - Tunnel oxygen supply system and method - Google Patents
Tunnel oxygen supply system and method Download PDFInfo
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- CN116044489A CN116044489A CN202211662092.0A CN202211662092A CN116044489A CN 116044489 A CN116044489 A CN 116044489A CN 202211662092 A CN202211662092 A CN 202211662092A CN 116044489 A CN116044489 A CN 116044489A
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 223
- 239000001301 oxygen Substances 0.000 title claims abstract description 223
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 223
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 46
- 238000009412 basement excavation Methods 0.000 claims abstract description 45
- 238000010276 construction Methods 0.000 claims abstract description 45
- 238000002640 oxygen therapy Methods 0.000 claims description 54
- 238000009434 installation Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000001179 sorption measurement Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000009792 diffusion process Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000003570 air Substances 0.000 description 114
- 238000009423 ventilation Methods 0.000 description 15
- 238000005192 partition Methods 0.000 description 6
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 206010021143 Hypoxia Diseases 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000007954 hypoxia Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F11/00—Rescue devices or other safety devices, e.g. safety chambers or escape ways
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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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
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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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/04—Distributing means for power supply in mines
- E21F17/10—Distributing pneumatic power; Pipe networks for compressed air
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Health & Medical Sciences (AREA)
- Emergency Management (AREA)
- Pulmonology (AREA)
- Ventilation (AREA)
Abstract
The invention relates to the technical field of tunnel construction, in particular to a tunnel oxygen supply system and a tunnel oxygen supply method. The system is provided with oxygen generating equipment which is arranged at the tunnel portal and is used for providing oxygen enriched air; an oxygen supply main pipe arranged along the tunnel excavation direction for conveying oxygen-enriched air into the tunnel; a restroom oxygen supply pipe provided at the temporary restroom for supplying oxygen-enriched air to the temporary restroom; the lining trolley oxygen delivery pipeline is arranged at the lining trolley and used for delivering oxygen-enriched air to the lining trolley; the cloth hanging trolley oxygen delivery pipeline is arranged at the cloth hanging trolley and used for delivering oxygen-enriched air to the cloth hanging trolley; and the excavation trolley oxygen delivery pipeline is arranged at the excavation trolley and used for delivering oxygen-enriched air to the excavation trolley. The method is realized based on the system. The invention can better realize oxygen supply in the tunnel.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a tunnel oxygen supply system and a tunnel oxygen supply method.
Background
The primary problem faced by railway construction in plateau areas is the special climatic conditions of high cold, high altitude and low air pressure. In the construction of high altitude tunnels, the most important difficulty is the safety of constructors, and although plateau residents are adapted to the labor operation in the special environment of the plateau, the plateau is wide in land and thin in labor force, a large number of constructors in the construction of the high altitude tunnels come from plain areas, and the constructors need to face the same construction environment problems in the construction of the same plain tunnels, such as mechanical noise, dust generated by blasting, harmful gas and other conventional problems, and the work efficiency of the constructors is seriously affected by high-cold hypoxia. Particularly, severe hypoxia can lead constructors to generate severe altitude reaction, induce engineering safety accidents and seriously influence the smooth operation of construction.
In addition, in the tunnel construction process, the concentration of harmful gas, dust and the like in the tunnel needs to be controlled, so ventilation design is needed. Considering the current tunnel construction, firstly, an inclined shaft is excavated, and then a positive hole is excavated, so that a ventilation system and a ventilation method of the whole tunnel construction process are required to be designed.
Disclosure of Invention
The present invention provides a tunnel oxygen supply system that overcomes some or all of the disadvantages of the prior art.
The tunnel oxygen supply system according to the present invention, which comprises,
the oxygen generating device is arranged at the tunnel portal and is used for providing oxygen-enriched air;
an oxygen supply main pipe arranged along the tunnel excavation direction for conveying oxygen-enriched air into the tunnel;
a restroom oxygen supply pipe provided at the temporary restroom for supplying oxygen-enriched air to the temporary restroom;
the lining trolley oxygen delivery pipeline is arranged at the lining trolley and used for delivering oxygen-enriched air to the lining trolley;
the cloth hanging trolley oxygen delivery pipeline is arranged at the cloth hanging trolley and used for delivering oxygen-enriched air to the cloth hanging trolley; and
the excavation trolley oxygen therapy pipeline is arranged at the excavation trolley and used for conveying oxygen-enriched air to the excavation trolley.
Through the structure, the characteristics of complex construction in the tunnel and large oxygen supply required by mechanical personnel can be better aimed at, the feasible and stable oxygen supply in the tunnel can be better realized, the construction efficiency is improved, and the physical health of the constructors and the normal construction of the tunnel are ensured.
Preferably, the oxygen producing apparatus is a pressure swing adsorption oxygen producing apparatus. So that the supply of oxygen enriched air can be preferably realized.
Preferably, the main oxygen supply pipe is arranged along the side wall of the tunnel and adopts a stainless steel pipe. So that the rich air can be better conveyed.
Preferably, the oxygen supply pipeline of the rest room is connected with the oxygen supply main pipeline through a three-way joint and a valve, and a plurality of mask type oxygen inhalation ports are arranged at the oxygen supply pipeline of the rest room. Through the arrangement, the emergency shelter can be provided for constructors under the condition that air in the tunnel is polluted.
Preferably, the lining trolley oxygen delivery pipeline comprises a lining trolley oxygen delivery main pipeline arranged along the circumferential direction and a plurality of lining trolley oxygen delivery branch pipelines arranged along the longitudinal direction, and the lining trolley oxygen delivery main pipeline is connected with the oxygen supply main pipeline through a first hose; the lining trolley oxygen therapy branch pipelines are connected into the lining trolley oxygen therapy main pipeline, and a plurality of first oxygen supply interfaces are formed at the lining trolley oxygen therapy branch pipelines. Therefore, the oxygen supply to constructors at the lining trolley can be preferably realized.
Preferably, the cloth hanging trolley oxygen therapy pipeline comprises a cloth hanging trolley oxygen therapy main pipeline arranged along the circumferential direction and a plurality of cloth hanging trolley oxygen therapy branch pipelines arranged along the longitudinal direction, and the cloth hanging trolley oxygen therapy main pipeline is connected with the oxygen supply main pipeline through a second hose; the plurality of cloth hanging trolley oxygen therapy branch pipelines are connected into the cloth hanging trolley oxygen therapy main pipeline, and a plurality of second oxygen supply interfaces are formed at the cloth hanging trolley oxygen therapy branch pipeline. So that the oxygen supply to constructors at the cloth hanging trolley can be preferably realized.
Preferably, the excavation trolley oxygen delivery pipeline comprises an excavation trolley oxygen delivery main pipeline arranged along the circumferential direction and a plurality of excavation trolley oxygen delivery branch pipelines arranged along the longitudinal direction, and the excavation trolley oxygen delivery main pipeline is connected into the oxygen supply main pipeline through a third hose; the plurality of excavation trolley oxygen therapy branch pipelines are connected into the excavation trolley oxygen therapy main pipeline, and a plurality of oxygen diffusion openings are formed at the excavation trolley oxygen therapy branch pipeline. Therefore, the oxygen supply to constructors at the digging trolley can be preferably realized.
In addition, the invention also provides a tunnel oxygen supply method, which comprises the following steps:
setting an oxygen production equipment installation area at the tunnel portal, and setting oxygen production equipment at the oxygen production equipment installation area to provide oxygen-enriched air;
arranging an oxygen supply main pipeline along the tunnel excavation direction so as to convey oxygen-enriched air into the tunnel;
at the lining construction completion area, rest rooms are arranged at intervals, and rest room oxygen supply pipelines are arranged in the rest rooms;
a lining trolley oxygen delivery pipeline is arranged at a lining trolley construction area to provide oxygen-enriched air for constructors at the lining trolley;
arranging an oxygen transmission pipeline of the cloth hanging trolley at a construction area of the cloth hanging trolley so as to provide oxygen-enriched air for constructors at the cloth hanging trolley;
an excavation trolley oxygen delivery pipeline is arranged at the construction area of the face so as to provide oxygen-enriched air for constructors at the face.
By the method, the characteristics of different construction areas of the tunnel can be combined better, and the multi-azimuth and multi-form combined oxygen supply scheme is realized, so that the sufficient oxygen supply in the tunnel can be ensured better.
Drawings
FIG. 1 is a schematic diagram of the piping of the tunnel oxygen supply system in example 1;
fig. 2 is a schematic layout view of the main oxygen supply pipe in embodiment 1;
fig. 3 is a plan view schematically showing the arrangement of the restroom oxygen supply conduit 310 in embodiment 1;
fig. 4 is a schematic longitudinal sectional view showing the arrangement of the restroom oxygen supply conduit 310 in embodiment 1;
FIG. 5 is a schematic cross-sectional view showing the arrangement of the restroom oxygen supply conduit 310 in example 1;
FIG. 6 is a schematic cross-sectional view showing the arrangement of oxygen pipes on a lining-cutting trolley in example 1;
fig. 7 is a schematic view of a longitudinal section of an oxygen therapy piping arrangement of the lining-cutting trolley in example 1;
FIG. 8 is a schematic cross-sectional view of the oxygen therapy piping arrangement of the cloth hanging trolley of example 1;
fig. 9 is a schematic view of a longitudinal section of the oxygen supply pipeline arrangement of the cloth hanging trolley in embodiment 1;
fig. 10 is a schematic cross-sectional view showing the arrangement of the oxygen therapy pipeline of the excavation trolley in embodiment 1;
fig. 11 is a schematic view of a longitudinal section of an oxygen therapy pipeline arrangement of an excavating trolley in embodiment 1;
FIG. 12 is a schematic view showing the deployment of the tunnel oxygen supply system in example 1 in actual use;
fig. 13 is a schematic layout view of a tunnel ventilation system in embodiment 2;
FIG. 14 is a schematic view showing the arrangement of a wind bin in embodiment 2;
fig. 15 is a schematic view showing the arrangement of the separator in embodiment 2;
fig. 16 is a schematic structural view of a separator in embodiment 2;
FIG. 17 is a schematic view showing the arrangement of the air intake assembly in embodiment 2;
FIG. 18 is a schematic view showing the structure of a fan bracket in embodiment 2;
fig. 19 is a schematic diagram showing the arrangement of the inclined hole construction stage in example 2.
Detailed Description
For a further understanding of the present invention, the present invention will be described in detail with reference to examples. It is to be understood that the examples are illustrative of the present invention and are not intended to be limiting.
Example 1
In view of fig. 1, the present embodiment provides a tunnel oxygen supply system, which includes,
an oxygen generating device 110 provided at the tunnel portal for providing oxygen enriched air;
an oxygen supply main pipe 120 arranged along a tunnel excavation direction for delivering oxygen-enriched air into the tunnel;
a restroom oxygen supply conduit 310 disposed at the restroom for delivering oxygen enriched air thereto;
a lining trolley oxygen delivery pipe provided at the lining trolley 130 for delivering oxygen-enriched air to the lining trolley 130;
the cloth hanging trolley oxygen delivery pipeline is arranged at the cloth hanging trolley 140 and is used for delivering oxygen-enriched air to the cloth hanging trolley 140; and
an excavation trolley oxygen delivery conduit disposed at the excavation trolley 150 for delivering oxygen enriched air to the excavation trolley 150.
Through the structure, the characteristics of complex construction in the tunnel and large oxygen supply required by mechanical personnel can be better aimed at, the feasible and stable oxygen supply in the tunnel can be better realized, the construction efficiency is improved, and the physical health of the constructors and the normal construction of the tunnel are ensured.
In this embodiment, the pressure swing adsorption oxygen plant 110 is used as the oxygen plant 110. So that the supply of oxygen enriched air can be preferably realized.
In this embodiment, the pressure swing adsorption oxygen plant 110 can directly employ an existing PSA-series oxygen generator.
As seen in fig. 2, the main oxygen supply pipe 120 is provided along the tunnel sidewall and is made of stainless steel pipe. So that the rich air can be better conveyed.
Referring to fig. 3-5, the rest room oxygen supply pipeline 310 is connected to the main oxygen supply pipeline 120 through a three-way joint 320 and a valve 330, and a plurality of mask type oxygen inhalation ports 410 are arranged at the rest room oxygen supply pipeline 310. Through the arrangement, the emergency shelter can be provided for constructors under the condition that air in the tunnel is polluted.
The mask oxygen inhalation port 410 is used for providing an interface for the existing oxygen inhalation mask device, and the valve 330 is arranged to close the oxygen supply pipeline 310 of the rest room when no person is in the rest room, so as to reduce the loss of oxygen enriched air.
As seen in fig. 6 and 7, the lining trolley oxygen therapy pipeline includes a lining trolley oxygen therapy main pipeline 610 arranged along a circumferential direction and a plurality of lining trolley oxygen therapy branch pipelines 620 arranged along a longitudinal direction, and the lining trolley oxygen therapy main pipeline 610 is connected to the oxygen supply main pipeline 120 through a first hose 630; the plurality of lining trolley oxygen therapy branch pipes 620 are connected to the lining trolley oxygen therapy main pipe 610, and a plurality of first oxygen supply interfaces 710 are formed at the lining trolley oxygen therapy branch pipes 620. Therefore, the oxygen supply to constructors at the lining trolley can be preferably realized.
The first oxygen supply interface 710 is used for providing an interface of an existing oral-nasal oxygen mask, and the oral-nasal oxygen mask is configured for a constructor, so that the oxygen-enriched air can be preferably supplied in real time by connecting the oral-nasal oxygen mask to the first oxygen supply interface 710 during construction.
As shown in fig. 8 and 9, the cloth hanging trolley oxygen therapy pipeline comprises a cloth hanging trolley oxygen therapy main pipeline 810 arranged along the circumferential direction and a plurality of cloth hanging trolley oxygen therapy branch pipelines 820 arranged along the longitudinal direction, wherein the cloth hanging trolley oxygen therapy main pipeline 810 is connected into the oxygen supply main pipeline 120 through a second hose 830; the plurality of hanging cloth trolley oxygen delivery branch pipelines 820 are connected to the hanging cloth trolley oxygen delivery main pipeline 810, and a plurality of second oxygen supply interfaces 910 are formed at the hanging cloth trolley oxygen delivery branch pipelines 820. So that the oxygen supply to constructors at the cloth hanging trolley can be preferably realized.
The second oxygen supply interface 910 is used for providing an interface of an existing oral-nasal oxygen mask, and the oral-nasal oxygen mask is configured for a constructor, so that the oxygen-enriched air can be preferably supplied in real time by connecting the oral-nasal oxygen mask to the second oxygen supply interface 910 during construction.
Referring to fig. 10 and 11, the excavation trolley oxygen therapy pipeline includes an excavation trolley oxygen therapy main pipeline 1010 disposed along a circumferential direction and a plurality of excavation trolley oxygen therapy branch pipelines 1020 disposed along a longitudinal direction, and the excavation trolley oxygen therapy main pipeline 1010 is connected to the oxygen supply main pipeline 120 through a third hose 1030; the plurality of excavation trolley oxygen therapy branch pipelines 1020 are connected into the excavation trolley oxygen therapy main pipeline 1010, and a plurality of oxygen diffusion openings 1130 are formed at the excavation trolley oxygen therapy branch pipelines 1020. Therefore, the oxygen supply to constructors at the digging trolley can be preferably realized.
In this embodiment, oxygen is supplied to the face construction area in a direct dispersion manner, so that the device can be better adapted to the characteristics of centralized face construction personnel, worse ventilation and farthest distance from the hole, and better oxygen-enriched air supply is realized.
Based on the system provided in this embodiment, this embodiment also provides a tunnel oxygen supply method, which is shown in fig. 12, and includes:
an oxygen plant installation area is arranged at the tunnel portal, and an oxygen plant 110 is arranged at the oxygen plant installation area to provide oxygen enriched air;
an oxygen supply main pipe 120 is arranged along the tunnel excavation direction (longitudinal direction) to carry out the transportation of oxygen enriched air into the tunnel;
at the lining construction completion area, rest rooms are arranged at intervals, and rest room oxygen supply pipelines 310 are arranged in the rest rooms;
a lining trolley oxygen delivery pipeline is arranged at a lining trolley construction area to provide oxygen-enriched air for constructors at the lining trolley;
arranging an oxygen transmission pipeline of the cloth hanging trolley at a construction area of the cloth hanging trolley so as to provide oxygen-enriched air for constructors at the cloth hanging trolley;
an excavation trolley oxygen delivery pipeline is arranged at the construction area of the face so as to provide oxygen-enriched air for constructors at the face.
By the method, the characteristics of different construction areas of the tunnel can be combined better, and the multi-azimuth and multi-form combined oxygen supply scheme is realized, so that the sufficient oxygen supply in the tunnel can be ensured better.
Wherein, the rest room can set up 1 every 500m, and can set up isolation curtain 420 between rest room and the tunnel.
In addition, in the inverted arch trolley construction area, the movable range of operators is large, so that independent oxygen supply can be realized by adopting portable oxygen generating equipment such as an oxygen bag, an oxygen tank and the like.
In the method of the present embodiment, the oxygen supply Q of the oxygen generator 110 needs to be designed. Specifically, q=α×q * . Wherein α is a safety factor, which can be 1.2 in this embodiment; q (Q) * Is oxygen demand.
Wherein the oxygen demand Q * Can supply oxygen with dispersed oxygen demand Q at the working area of the face 1 And oxygen demand Q of operators in tunnels 2 Performing calculations, i.e. Q * ＝Q 1 +Q 2 。
Wherein, the liquid crystal display device comprises a liquid crystal display device,
wherein V is F A% is the volume percent of the increase in oxygen content per hour of the region required to provide oxygen-enriched air, R 0 To provide the oxygen concentration (%), K at the outlet of the main oxygen supply pipe 120 1 Is a spatial tightness correction coefficient.
In the embodiment, taking the excavation area of the face of 83.6 square meters as an example, when a 10m diffuse oxygen supply area is ensured, V F 836 cubic meters. Taking the example of an oxygen concentration of 11.93% at an altitude of 4500m and an oxygen concentration of 14.46% to be achieved, a% is 2.53%. R is R 0 Is a known value, taking 93% as an example; k (K) 1 Taking 1.67 as an example, Q 1 About 37.98 (m) 3 /h)。
Wherein, the liquid crystal display device comprises a liquid crystal display device,
wherein Q is R Oxygen consumption flow rate (m) per hour for single person 3 /h), in this example at 0.24m 3 The example is/h; n is n R The maximum number of operators in the tunnel is 48 operators in the embodiment; thus, Q 2 About 12.39 (m) 3 /h)。
By the system and the method in the embodiment, the full oxygen supply in the tunnel can be realized preferably through theoretical calculation.
Example 2
Referring to fig. 13 and 14, the present embodiment provides a tunnel ventilation system, which includes,
the wind bin assembly 1310 is arranged on the upper layer of the tunnel and is positioned at the intersection of the inclined hole and the positive hole, a closed wind bin 1410 is formed in the wind bin assembly 1310, and the wind bin 1410 is provided with a wind bin air inlet area 1311 positioned at the inclined hole, a wind bin first air outlet area 1312 positioned in the large mileage direction of the positive hole and a wind bin second air outlet area 1313 positioned in the small mileage direction of the positive hole;
an air intake assembly 1320, coupled to the ventilation chamber air intake area 1311 and the outside, for delivering outside air into the air chamber 1410;
a first air supply assembly 1330 including a first air supply duct 1332 connected to the first air outlet region 1312 of the air bin by a first axial fan 1331, the first axial fan 1331 being configured to deliver air at the air bin 1410 to a high mileage face;
a second air supply assembly 1340 including a second air supply duct 1342 connected to the second air outlet area 1313 of the air bin by a second axial fan 1341, the second axial fan 1341 for delivering air at the air bin 1410 to the low mileage face; and
the first return air assembly comprises a first jet fan 1333, the second return air assembly comprises a second jet fan 1343, the first jet fan 1333 and the second jet fan 1343 are respectively located at the large mileage face and the small mileage face and are both located at the lower layer of the tunnel, and the first jet fan 1333 and the second jet fan 1343 are used for respectively promoting air circulation at the large mileage face and the small mileage face to the intersection of the inclined tunnel and the positive tunnel.
Through the arrangement of the air supply air passage and the air return air passage can be better realized; specifically, at the supply air path, external air can be delivered to the air bin assembly 1310 by the air inlet assembly 1320, and then delivered to the large mileage face and the small mileage face respectively by two branches formed by the first air supply assembly 1330 and the second air supply assembly 1340; simultaneously, through the setting of first return air subassembly and second return air subassembly, can realize the discharge of air to the external world in the tunnel preferably to realize the setting of return air wind way. Through the arrangement, ventilation arrangement in the tunnel construction process is preferably ensured.
In this embodiment, a flow guiding component is disposed in the wind bin 1410, and the flow guiding component includes a flow guiding plate 1351 and a third jet fan 1352; the deflector 1351 is configured to partition the first air outlet region 1312 and the second air outlet region 1313 of the air cabin, and is configured such that the first air outlet region 1312 and the second air outlet region 1313 of the air cabin and the air inlet region 1311 of the air cabin form a first air outlet region air inlet 1361 and a second air outlet region air inlet 1362, respectively; the third jet fan 1352 has 2 and is disposed at the first air outlet area air inlet 1361 and the second air outlet area air inlet 1362 respectively.
By the above, the air in the air compartment 1410 can be better promoted to flow to the first air supply assembly 1330 and the second air supply assembly 1340, so that the ventilation effect can be better promoted.
In this embodiment, the wind bin assembly 1310 includes a partition plate 1420 and a baffle 1430, where the partition plate 1420 is used to form a bottom surface of the wind bin 1410, and the baffle 1430 is used to seal the open ends of the wind bin air inlet area 1311, the wind bin first air outlet area 1312, and the wind bin second air outlet area 1313.
By the above, the wind bin 1410 can be preferably built.
As seen in fig. 15, the bulkhead 1420 is secured by brackets 1510 provided at the tunnel side walls, the brackets 1510 being secured by anchors 1520. The mounting of the partition 1420 can be preferably accomplished.
Referring to fig. 16, the partition 1420 includes a frame 1610 made of i-steel, a plurality of support beams 1620 made of channel steel are disposed at the frame 1610, and a plate 1630 is laid at the frame 1610. The preparation of the partition 1420 is preferably accomplished.
As seen in fig. 17, the air intake assembly 1320 includes an air intake axial fan 1710 and an air intake duct 1720, the air intake axial fan 1710 being configured to deliver ambient air through the air intake duct 1720 to the air intake area 1311 of the air bin. So that the transportation of the outside air from the inclined hole is preferably realized.
In this embodiment, the inlet axial fan 1710 is elevated by a fan bracket 1740 and the inlet conduit 1720 is reinforced by a sling 1730. The fixing arrangement of the air inlet axial flow fan 1710 and the air inlet pipe 1720 is preferably realized.
As seen in fig. 18, the fan bracket 1740 includes a rectangular door frame 1810 with an arched beam 1820 disposed inwardly above the rectangular door frame 1810. The configuration of blower bracket 1740 is preferably implemented.
In addition, the embodiment also provides a tunnel ventilation method, which realizes ventilation in tunnel construction through the tunnel ventilation system. Ventilation of the tunnel can be preferably realized.
The tunnel ventilation method in this embodiment specifically includes the following.
1. Inclined hole construction stage
Referring to fig. 19, at this time, a fan bracket 1740 is first erected, and then the air inlet axial flow fan 1710 and the air inlet pipe 1720 are laid, and in this stage, the air inlet pipe 1720 is lengthened along with the construction progress of the inclined hole;
2. positive tunnel construction stage
After the construction of the intersection of the inclined hole and the main hole is completed, the air bin assembly 1310 is arranged, the air inlet assembly 1320 and the air bin assembly 1310 are assembled, and then the first air supply assembly 1330, the second air supply assembly 1340, the first air return assembly and the second air return assembly are paved along with the construction progress of the main hole.
Example 3
This example provides a tunnel gas supply system having the oxygen supply system of example 1 and the ventilation system of example 2.
It is to be understood that, based on one or several embodiments provided herein, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, which do not exceed the protection scope of the present application.
The invention and its embodiments have been described above by way of illustration and not limitation, and the examples are merely illustrative of embodiments of the invention and the actual construction is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (8)
1. Tunnel oxygen supply system, its characterized in that: comprising the steps of (a) a step of,
the oxygen generating device is arranged at the tunnel portal and is used for providing oxygen-enriched air;
an oxygen supply main pipe arranged along the tunnel excavation direction for conveying oxygen-enriched air into the tunnel;
a restroom oxygen supply pipe provided at the temporary restroom for supplying oxygen-enriched air to the temporary restroom;
the lining trolley oxygen delivery pipeline is arranged at the lining trolley and used for delivering oxygen-enriched air to the lining trolley;
the cloth hanging trolley oxygen delivery pipeline is arranged at the cloth hanging trolley and used for delivering oxygen-enriched air to the cloth hanging trolley; and
the excavation trolley oxygen therapy pipeline is arranged at the excavation trolley and used for conveying oxygen-enriched air to the excavation trolley.
2. The tunnel oxygen supply system of claim 1, wherein: the oxygen generating equipment adopts pressure swing adsorption oxygen generating equipment.
3. The tunnel oxygen supply system of claim 1, wherein: the main oxygen supply pipeline is arranged along the side wall of the tunnel and adopts stainless steel pipes.
4. The tunnel oxygen supply system of claim 1, wherein: the oxygen supply pipeline of the rest room is connected with the oxygen supply main pipeline through a three-way joint and a valve, and a plurality of mask type oxygen inhalation ports are arranged at the oxygen supply pipeline of the rest room.
5. The tunnel oxygen supply system of claim 1, wherein: the lining trolley oxygen therapy pipeline comprises a lining trolley oxygen therapy main pipeline arranged along the circumferential direction and a plurality of lining trolley oxygen therapy branch pipelines arranged along the longitudinal direction, and the lining trolley oxygen therapy main pipeline is connected into the oxygen supply main pipeline through a first hose; the lining trolley oxygen therapy branch pipelines are connected into the lining trolley oxygen therapy main pipeline, and a plurality of first oxygen supply interfaces are formed at the lining trolley oxygen therapy branch pipelines.
6. The tunnel oxygen supply system of claim 1, wherein: the cloth hanging trolley oxygen delivery pipeline comprises a cloth hanging trolley oxygen delivery main pipeline arranged along the circumferential direction and a plurality of cloth hanging trolley oxygen delivery branch pipelines arranged along the longitudinal direction, and the cloth hanging trolley oxygen delivery main pipeline is connected with the oxygen supply main pipeline through a second hose; the plurality of cloth hanging trolley oxygen therapy branch pipelines are connected into the cloth hanging trolley oxygen therapy main pipeline, and a plurality of second oxygen supply interfaces are formed at the cloth hanging trolley oxygen therapy branch pipeline.
7. The tunnel oxygen supply system of claim 1, wherein: the excavation trolley oxygen therapy pipeline comprises an excavation trolley oxygen therapy main pipeline arranged along the circumferential direction and a plurality of excavation trolley oxygen therapy branch pipelines arranged along the longitudinal direction, and the excavation trolley oxygen therapy main pipeline is connected into the oxygen supply main pipeline through a third hose; the plurality of excavation trolley oxygen therapy branch pipelines are connected into the excavation trolley oxygen therapy main pipeline, and a plurality of oxygen diffusion openings are formed at the excavation trolley oxygen therapy branch pipeline.
8. A tunnel oxygen supply method, comprising:
setting an oxygen production equipment installation area at the tunnel portal, and setting oxygen production equipment at the oxygen production equipment installation area to provide oxygen-enriched air;
arranging an oxygen supply main pipeline along the tunnel excavation direction so as to convey oxygen-enriched air into the tunnel;
at the lining construction completion area, rest rooms are arranged at intervals, and rest room oxygen supply pipelines are arranged in the rest rooms;
a lining trolley oxygen delivery pipeline is arranged at a lining trolley construction area to provide oxygen-enriched air for constructors at the lining trolley;
arranging an oxygen transmission pipeline of the cloth hanging trolley at a construction area of the cloth hanging trolley so as to provide oxygen-enriched air for constructors at the cloth hanging trolley;
an excavation trolley oxygen delivery pipeline is arranged at the construction area of the face so as to provide oxygen-enriched air for constructors at the face.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211662092.0A CN116044489A (en) | 2022-12-23 | 2022-12-23 | Tunnel oxygen supply system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211662092.0A CN116044489A (en) | 2022-12-23 | 2022-12-23 | Tunnel oxygen supply system and method |
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| Publication Number | Publication Date |
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| CN116044489A true CN116044489A (en) | 2023-05-02 |
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| CN202211662092.0A Pending CN116044489A (en) | 2022-12-23 | 2022-12-23 | Tunnel oxygen supply system and method |
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