CN116357373A - Method for ventilating tunnel cross tunnel construction in high-altitude area - Google Patents
Method for ventilating tunnel cross tunnel construction in high-altitude area Download PDFInfo
- Publication number
- CN116357373A CN116357373A CN202310479087.4A CN202310479087A CN116357373A CN 116357373 A CN116357373 A CN 116357373A CN 202310479087 A CN202310479087 A CN 202310479087A CN 116357373 A CN116357373 A CN 116357373A
- Authority
- CN
- China
- Prior art keywords
- tunnel
- construction
- hole
- cross
- fan
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000009423 ventilation Methods 0.000 claims abstract description 37
- 230000008569 process Effects 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 13
- 238000012544 monitoring process Methods 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 32
- 229910052760 oxygen Inorganic materials 0.000 claims description 32
- 239000001301 oxygen Substances 0.000 claims description 32
- 239000007921 spray Substances 0.000 claims description 12
- 238000003825 pressing Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 claims description 6
- 238000009529 body temperature measurement Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000005641 tunneling Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 239000000523 sample Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000011218 segmentation Effects 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000009323 psychological health Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
-
- 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
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- 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
- E21F3/00—Cooling or drying of air
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ventilation (AREA)
Abstract
The invention provides a method for ventilating tunnel cross-tunnel construction in a high-altitude area, which comprises the following steps: step S1, performing cross-hole construction on one side of a double-line tunnel, and installing a first fan at the opening of the cross-hole; step S2, entering into a main tunnel construction after the construction of the cross tunnel is completed, and step S3, monitoring the geology of a working face in the main tunnel construction process, and after entering into a geothermal zone, respectively arranging jet fans for auxiliary ventilation at the intersection of the cross tunnel and the main tunnel, the main tunnel body and the main tunnel inlet and outlet; and S4, adding a cooling device on the construction working surface along with the pushing of the working surface of the positive tunnel. According to the construction progress segmentation optimization ventilation scheme, ventilation is realized by adopting a fan during the construction of a cross tunnel, when the cross tunnel is constructed, an independent air supply system for four working faces is formed, independent ventilation is realized for each working face, the ventilation pressure-feed distance is reduced, and therefore the ventilation condition in a tunnel is ensured to meet the construction requirement.
Description
Technical Field
The invention belongs to the technical field of tunnel construction, and particularly relates to a ventilation method for tunnel cross tunnel construction in a high-altitude area.
Background
In the tunnel construction process in the plateau area, the oxygen content of the atmosphere in the low-pressure environment is only about 60% of the sea level under the influence of the plateau climate and the high altitude, the work efficiency loss is obvious under the anoxic environment of constructors and mechanical equipment, and meanwhile, in the plateau area, the failure rate of the mechanical equipment (difficult distribution of accessories in the remote area), the brittle fracture of a metal structural member, the oil consumption and the exhaust emission of internal combustion equipment are all increased to different degrees. The oxygen content in the high-altitude area is low, meanwhile, the single-head tunneling distance of the long and large tunnel is large, the oxygen content in the tunnel is lower than that in the outside of the tunnel, and the ventilation requirement in the long and large tunnel is reasonable and efficient for protecting the physical and psychological health of constructors in the tunnel, ensuring safe production and improving the working efficiency.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a method for constructing and ventilating a tunnel cross tunnel in a high-altitude area.
In order to achieve the above object, the present invention provides the following technical solutions:
a method for ventilating tunnel cross-tunnel construction in high altitude areas comprises the following steps:
step S1, performing transverse tunnel construction on one side of a double-line tunnel, performing transverse tunnel construction in a single-head tunneling mode, installing a first fan at a hole opening of the transverse tunnel after the transverse tunnel is tunneled to a certain distance, and conveying air pressure outside the tunnel to a transverse tunnel working surface through the first fan;
step S2, entering into a main tunnel construction after the construction of the transverse tunnel is completed, and performing main tunnel excavation along two directions of the double-line tunnel main tunnel so as to divide the main tunnel construction into 4 main tunnel working surfaces, adding a second fan at the opening of the transverse tunnel, respectively pressing and conveying air outside the tunnel to the main tunnel working surfaces in one direction of the double-line main tunnel through the second fan, and respectively pressing and conveying air outside the tunnel to the main tunnel working surfaces in the other direction of the double-line main tunnel through the first fan;
step S3, monitoring geology of a working surface in the construction process of the main tunnel, and after entering a geothermal zone, respectively arranging jet fans for auxiliary ventilation at intersections of the transverse tunnel and the main tunnel, the main tunnel body and the main tunnel inlet and outlet;
and S4, adding a cooling device on the construction working surface along with the pushing of the working surface of the positive tunnel.
Preferably, the first fan supplies air through a first air supply pipeline, and the first air supply pipeline extends along one side, close to the central line, of the top of the transverse hole; two first branch pipes are arranged at the end part of the first air supply pipeline and respectively supply air to two positive hole working surfaces close to the construction direction; in the positive hole, the first branch pipe extends along the vault of the positive hole;
the second fan is used for blowing air through a second air supply pipeline, and the second air supply pipeline extends along the other side of the top of the transverse hole, which is close to the center line; two second branch pipes are arranged at the end parts of the second air supply pipeline and respectively supply air to two positive hole working surfaces in the corresponding construction direction; within the positive hole, the second branch extends along the dome of the positive hole.
Preferably, in the propelling process of the transverse hole working surface, the air outlet of the oxygen generating system is communicated with the air inlet of the first fan so as to supply oxygen through the first air supply pipeline;
in the forward movement process of the hole working surface, the oxygen production system respectively supplies oxygen to two directions of the double-line hole through two oxygen supply pipes.
Preferably, a damper is disposed at a portion between the first air supply duct and the second air supply duct corresponding to the transverse hole and the two positive holes.
Preferably, in step S3, geological judgment is performed through temperature change, a borehole is drilled on one side wall at a certain distance from the working surface, a temperature measurement probe is inserted into the borehole, and along with the advancement of the working surface, temperature measurement monitoring is performed every 50 m.
Preferably, the cooling device comprises a fan and a spraying device which are arranged on the construction work frame;
the spray device is an arch frame matched with the main tunnel, an atomization spray head is arranged on the inner side of the arch frame, and the spray device is positioned on one side of the air supply outlet away from the working surface, so that high-temperature air of the working surface of the main tunnel passes through the spray device to cool.
Preferably, at least two transverse holes are arranged on the tunnel for ventilation.
The beneficial effects are that: according to the construction progress segmentation optimization ventilation scheme, ventilation is realized by adopting a fan during the construction of a cross tunnel, when the cross tunnel is constructed, an independent air supply system for four working faces is formed, independent ventilation is realized for each working face, the ventilation pressure-feed distance is reduced, and therefore the ventilation condition in a tunnel is ensured to meet the construction requirement.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. Wherein:
FIG. 1 is a schematic illustration of ventilation during the advancement of a face of a cross-tunnel in accordance with an embodiment of the present invention;
FIG. 2 is a schematic illustration of ventilation during the forward movement of the face of the hole in accordance with an embodiment of the present invention;
fig. 3 is a schematic distribution diagram of a first air supply duct and a second air supply duct according to an embodiment of the present invention.
In the figure: 1. a transverse hole; 2. a first air supply duct; 3. a first fan; 4. a positive hole; 5. a second fan; 6. a second air supply duct; 7. a first branch pipe; 8. a second branch pipe; 9. a hoop; 10. fixing the loop bar; 11. a connecting rod; 12. and (5) a base.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1-3, a ventilation method for tunnel cross hole construction in a high altitude area aims at ventilation and air supply in the synchronous construction process of a double-line tunnel, specifically, two positive holes 4 of the tunnel are basically extended in parallel, a cross hole 1 is arranged in the middle of the tunnel, and the mileage of the tunnel is divided by the cross hole 1, so that the tunnel is divided into a plurality of ventilation areas, the problems of difficult ventilation, high ventilation equipment requirement and the like caused by long distance are reduced, and the specific construction comprises the following steps:
step S1, constructing a transverse hole 1 on one side of a double-line tunnel, and simultaneously carrying out intersection communication on the transverse hole 1 and two positive holes 4 of the tunnel, wherein the transverse hole 1 is constructed in a single-head tunneling mode, ventilation is carried out after the transverse hole 1 is tunneled to a certain distance, for example, a first fan 3 is installed at a hole opening of the transverse hole 1 after 150m, air outside the transverse hole is conveyed to a working face of the transverse hole 1 through the first fan 3 in a pressing mode, fresh air of the working face is supplied, and good construction conditions are provided for construction.
Step S2, after the construction of the transverse tunnel 1 is completed, the construction of the positive tunnel 4 is carried out, at the crossing position of the transverse tunnel 1 and the positive tunnel 4, the two-way construction of the two positive tunnels 4 is carried out, and the construction of the positive tunnel 4 can be divided into 4 positive tunnel 4 working surfaces by excavating the positive tunnel 4 along the two directions of the double-line tunnel positive tunnel 4.
The second fans 5 are additionally arranged at the holes of the transverse holes 1, air outside the holes is respectively conveyed to the working surfaces of the positive holes 4 in one direction of the double-line positive holes 4 through the second fans 5 in a pressing mode, at the moment, the first fans 3 can supply air to the working surfaces of the two positive holes 4 in the other direction of the positive holes 4, and accordingly air outside the holes is respectively conveyed to the working surfaces of the positive holes 4 in the two directions of the double-line positive holes 4 through the two fans in a pressing mode.
S3, monitoring geology of working surfaces in the construction process of the positive hole 4 after tunnel excavation enters the positive hole 4 for construction, continuously rising the ambient temperature of four working surfaces in the hole after entering a geothermal zone, and respectively arranging jet fans at the intersection of the transverse hole 1 and the positive hole 4, the body of the positive hole 4 and the inlet and outlet of the positive hole 4 for auxiliary ventilation in order to reduce the temperature better and eliminate vortex phenomenon formed at the intersection of the transverse hole 1 and the positive hole 4;
and S4, adding a cooling device on the construction working surface along with the pushing of the working surface of the positive hole 4.
In the embodiment, the first fan 3 and the second fan 5 are both axial flow fans, and under the normal construction environment, the requirement that the working face wind speed is not less than 0.15m/s during full-section excavation is ensured.
In an alternative embodiment, the first fan 3 supplies air through the first air supply pipeline 2, the diameter of the first air supply pipeline 2 is 2.2m, and the first air supply pipeline 2 is fixed on the inner wall of the tunnel through the hoop, wherein the first air supply pipeline 2 extends along one side, close to the central line, of the top of the transverse tunnel 1, and during the construction process of the transverse tunnel 1, the working surface of the transverse tunnel 1 is kept to have enough fresh air along with the pushing of the working surface of the transverse tunnel 1 all the time.
The first air supply pipeline 2 is divided into two corresponding first branch pipes 7 of the two positive holes 4, so that air is supplied to the working surfaces of the two positive holes 4 close to the construction direction respectively, the first branch pipes 7 and the first air supply pipe can be of the same specification, and the first branch pipes 7 are lengthened along with the propulsion of the working surfaces in the propulsion process of the working surfaces of the positive holes 4.
The second fan 5 carries out the air supply through second air supply pipeline 6, and second fan 5 arranges when carrying out positive hole 4 excavation, and second air supply pipeline 6 extends along the opposite side that is close to the central line at horizontal hole 1 top, and two second branch pipes 8 are gone out to second air supply pipeline 6 tip, and two second branch pipes 8 advance respectively along with the positive hole 4 working face of this corresponding direction and ventilate, carry out the air supply to two positive hole 4 working faces of corresponding construction direction respectively.
Within the hole 4, the second branch pipe 8 extends along the dome of the hole 4, and the first branch pipe 7 extends along the dome of the hole 4.
In this embodiment, oxygen supply is performed in the process of pushing the working face of the transverse tunnel 1, specifically, oxygen is performed through an oxygen generating system, an air outlet of the oxygen generating system is communicated with an air inlet of the first fan 3, in the ventilation process of the first fan 3, oxygen generated by the oxygen generating system is supplied to the working face through the first air supply pipeline 2, the oxygen supplying system and the ventilation system are integrated, material investment is less, and management and maintenance are convenient.
In the process of the advancing of the working face of the positive hole 4, the oxygen production system respectively supplies oxygen to two directions of the double-line positive hole 4 through two oxygen supply pipes, oxygen supply is carried out through independent oxygen supply pipes, the oxygen supply efficiency is high, the oxygen supply amount and the oxygen supply position are controllable, the oxygen supply system and the ventilation system are two sets of mutually independent systems, the reliability is high, at the moment, the oxygen supply pipes and the second air supply pipes are simultaneously constructed, and the oxygen supply pipes and the first branch pipes 7 and the second branch pipes 8 synchronously extend in the process of the advancing of the working face, so that the oxygen supply requirement can be met, and the working procedures can be saved.
In an alternative embodiment, a damper is disposed at a portion between the first air supply duct 2 and the second air supply duct 6 corresponding to the transverse hole 1 and the two positive holes 4, and the damper can control ventilation amounts of working surfaces of the two positive holes 4 in the same direction, so as to ensure that ventilation amounts of working surfaces of the two positive holes 4 are the same.
In an alternative embodiment, in step S3, geological judgment is performed through temperature change, a borehole is drilled on one side wall at a distance of 30m from the working surface, a temperature probe is inserted into the borehole, temperature measurement monitoring is performed every 50m along with the propulsion of the working surface, the borehole depth is about 2m, the borehole is cleaned up, the air temperature value in the detected hole is greater than 28 ℃, the rock temperature value is greater than 32 ℃, and it can be determined that tunnel excavation construction enters a geothermal zone, and corresponding cooling measures are adopted at the moment.
In this embodiment, heat sink is including setting up fan and the spray set on construction work frame, and the reasonable small-size fan or the fan of setting up on the construction work rack strengthen local wind velocity to accelerate the air velocity of circulation in the hole, reach the purpose of cooling.
The spray set is the arch frame with positive hole 4 looks adaptation, is equipped with atomizer in the inboard of arch frame, spray set is located the supply-air outlet and keeps away from one side of working face, makes the high temperature air of positive hole 4 working face pass spray set and cools down, and the targeted positive hole 4 working face of treating the cooling cools down, need not to set up heat sink alone to every working face.
Taking the positive hole 4 working face corresponding to one of the first branch pipes 7 as an example, the working face is pushed to the geothermal land section, geothermal heat of the working face is enabled to flow to the air outlet rapidly through the first branch pipe 7 and the fan, and the spraying device is arranged at the hot air flowing position to form a cooling curtain, so that cooling is achieved, the problem of temperature rise in a tunnel is avoided, meanwhile, the cooling device is arched, and operation of other settings in the tunnel is not affected.
In this embodiment, a plurality of cooling devices may be provided according to the geothermal temperature.
In an alternative embodiment, ventilation is performed by arranging at least two transverse holes 1 on the tunnel, so that the stability of air supply is improved through sectional air supply, and meanwhile, the construction progress of the tunnel can be accelerated.
In this embodiment, after the positive hole 4 between the two transverse holes 1 is penetrated, the fans in one direction of the penetrating sections of the two transverse holes 1 are stopped, and ventilation is performed only by one group of fans in the whole construction process of the later stage of the tunnel, and the fans stopped at this time can be used as standby or removed for construction in the next stage.
The position that corresponds two positive holes between two air supply pipelines is equipped with the wind-guiding branch pipe, and the inside valve that is equipped with of wind-guiding branch pipe opens the valve and carries out interim air feed when the fan that one of them air supply pipeline corresponds damages, and still further, when this section positive hole construction finishes (or positive hole 4 link up between two horizontal holes 1), opens the wind-guiding branch pipe, can be with the evacuation that one of them fan and the air supply pipeline that between fan and the wind-guiding branch pipe correspond to realize the fan and turn over and use.
The two air supply pipelines are correspondingly arranged on the connecting rod, and two sides of the lower end of the connecting rod are provided with outwards turned hoops which are used for fixing the two air supply pipelines, and the hoops can be steel belts and are used for hooping the air supply pipelines; the fixed loop bar is arranged at the top of the transverse hole (or the positive hole), the connecting rod is assembled in the fixed loop bar through threads, the fixed loop bar is anchored at the top of the transverse hole (or the positive hole), the lower end of the connecting rod is close to the inner wall of the transverse hole (or the positive hole), the lower end of the connecting rod is rotationally connected with the base, the two hoops are fixed on the base, so that the two air supply pipelines can be lifted through the connecting rod, the inner guniting of the transverse hole or the positive hole or other operations of lining construction can be carried out after the two air supply pipelines are lifted down, and the corrugated pipe with a section of 10m is arranged at intervals of 30-50m to be used normally after the two air supply pipelines are lifted down, or the air supply pipeline is corrugated pipe.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The method for ventilating the tunnel cross tunnel construction in the high-altitude area is characterized by comprising the following steps of:
step S1, performing transverse tunnel construction on one side of a double-line tunnel, performing transverse tunnel construction in a single-head tunneling mode, installing a first fan at a hole opening of the transverse tunnel after the transverse tunnel is tunneled to a certain distance, and conveying air pressure outside the tunnel to a transverse tunnel working surface through the first fan;
step S2, entering into a main tunnel construction after the construction of the transverse tunnel is completed, and performing main tunnel excavation along two directions of the double-line tunnel main tunnel so as to divide the main tunnel construction into 4 main tunnel working surfaces, adding a second fan at the opening of the transverse tunnel, respectively pressing and conveying air outside the tunnel to the main tunnel working surfaces in one direction of the double-line main tunnel through the second fan, and respectively pressing and conveying air outside the tunnel to the main tunnel working surfaces in the other direction of the double-line main tunnel through the first fan;
step S3, monitoring geology of a working surface in the construction process of the main tunnel, and after entering a geothermal zone, respectively arranging jet fans for auxiliary ventilation at intersections of the transverse tunnel and the main tunnel, the main tunnel body and the main tunnel inlet and outlet;
and S4, adding a cooling device on the construction working surface along with the pushing of the working surface of the positive tunnel.
2. The method for ventilating a tunnel cross tunnel in a high altitude area according to claim 1, wherein the first fan blows air through a first air supply duct extending along one side of the top of the cross tunnel near a center line; two first branch pipes are arranged at the end part of the first air supply pipeline and respectively supply air to two positive hole working surfaces close to the construction direction; in the positive hole, the first branch pipe extends along the vault of the positive hole;
the second fan is used for blowing air through a second air supply pipeline, and the second air supply pipeline extends along the other side of the top of the transverse hole, which is close to the center line; two second branch pipes are arranged at the end parts of the second air supply pipeline and respectively supply air to two positive hole working surfaces in the corresponding construction direction; within the positive hole, the second branch extends along the dome of the positive hole.
3. The method for ventilating tunnel cross-tunnel construction in high altitude areas according to claim 2, wherein during the advancing process of the working surface of the cross-tunnel, the air outlet of the oxygen generating system is communicated with the air inlet of the first fan to supply oxygen through the first air supply pipeline;
in the forward movement process of the hole working surface, the oxygen production system respectively supplies oxygen to two directions of the double-line hole through two oxygen supply pipes.
4. The ventilation method for tunnel cross-hole construction in high altitude areas according to claim 2, wherein a damper is provided at a portion between the first air supply duct and the second air supply duct corresponding to the cross-hole and the two positive holes.
5. The ventilation method for tunnel cross-hole construction in high altitude areas according to claim 1, wherein in step S3, geological judgment is performed through temperature change, a drill hole is drilled on one side wall at a certain distance from the working surface, a temperature measuring probe is inserted into the drill hole, and temperature measurement monitoring is performed every 50m along with the advancement of the working surface.
6. The ventilation method for tunnel cross-tunnel construction in high altitude areas according to claim 1, wherein the cooling device comprises a fan and a spraying device arranged on the construction work frame;
the spray device is an arch frame matched with the main tunnel, an atomization spray head is arranged on the inner side of the arch frame, and the spray device is positioned on one side of the air supply outlet away from the working surface, so that high-temperature air of the working surface of the main tunnel passes through the spray device to cool.
7. The ventilation method for tunnel cross-hole construction in high altitude areas according to claim 1, wherein at least two cross-holes are provided on the tunnel for ventilation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310479087.4A CN116357373A (en) | 2023-04-28 | 2023-04-28 | Method for ventilating tunnel cross tunnel construction in high-altitude area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310479087.4A CN116357373A (en) | 2023-04-28 | 2023-04-28 | Method for ventilating tunnel cross tunnel construction in high-altitude area |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116357373A true CN116357373A (en) | 2023-06-30 |
Family
ID=86922379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310479087.4A Pending CN116357373A (en) | 2023-04-28 | 2023-04-28 | Method for ventilating tunnel cross tunnel construction in high-altitude area |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116357373A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080560A (en) * | 2010-12-15 | 2011-06-01 | 中铁隧道集团二处有限公司 | Tunnel wind room relay ventilation method for long blind heading |
| KR20120077932A (en) * | 2010-12-31 | 2012-07-10 | 이재성 | Ventilation system for underground tunnel |
| CN210422671U (en) * | 2019-07-03 | 2020-04-28 | 中交第二公路工程局有限公司 | Tunnel type aeration cooling system of high temperature area double-hole tunnel |
| CN113818901A (en) * | 2021-10-27 | 2021-12-21 | 四川省交通勘察设计研究院有限公司 | Multifunctional transverse channel structure for tunnel and construction method |
| CN114046170A (en) * | 2021-11-03 | 2022-02-15 | 中铁第一勘察设计院集团有限公司 | Construction ventilation system for simultaneously operating four faces of ultra-long tunnel by using transverse channel |
| CN115653661A (en) * | 2022-11-15 | 2023-01-31 | 中国铁建大桥工程局集团有限公司 | Ventilation method for tunnel construction in plateau area |
-
2023
- 2023-04-28 CN CN202310479087.4A patent/CN116357373A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080560A (en) * | 2010-12-15 | 2011-06-01 | 中铁隧道集团二处有限公司 | Tunnel wind room relay ventilation method for long blind heading |
| KR20120077932A (en) * | 2010-12-31 | 2012-07-10 | 이재성 | Ventilation system for underground tunnel |
| CN210422671U (en) * | 2019-07-03 | 2020-04-28 | 中交第二公路工程局有限公司 | Tunnel type aeration cooling system of high temperature area double-hole tunnel |
| CN113818901A (en) * | 2021-10-27 | 2021-12-21 | 四川省交通勘察设计研究院有限公司 | Multifunctional transverse channel structure for tunnel and construction method |
| CN114046170A (en) * | 2021-11-03 | 2022-02-15 | 中铁第一勘察设计院集团有限公司 | Construction ventilation system for simultaneously operating four faces of ultra-long tunnel by using transverse channel |
| CN115653661A (en) * | 2022-11-15 | 2023-01-31 | 中国铁建大桥工程局集团有限公司 | Ventilation method for tunnel construction in plateau area |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105715291B (en) | High-order lane UNICOM drilling circulating water type type pit cooling system and mine cooling method | |
| CN210599068U (en) | Cooling and heat insulating system suitable for high geothermal tunnel construction | |
| WO2018171255A1 (en) | Networked preferential gas migration passage construction and gas diversion drainage method | |
| CN100595420C (en) | Pressure regulating and distributing chamber ventilation construction method inside tunnel assist drift heading hole | |
| CN101220746A (en) | TBM pilot tunnel expansion digging method for 20km double-line double-cavity ultra-long tunnel construction | |
| CN202768046U (en) | Jet ventilation structure for tunnel construction of single inclined shaft and double main tunnels | |
| CN101215973A (en) | Tunnel construction jet flow laneway ventilation method | |
| CN110439604B (en) | Long-distance ventilation method for construction of extra-long tunnel | |
| CN202391448U (en) | Roadway type ventilating structure of no-air door of long-distance tunnel | |
| CN106948856A (en) | A kind of mine local cooling device and method | |
| CN105134278B (en) | High aititude extremely frigid zones tunnel ventilation temperature elevation system and ventilation heating construction method | |
| CN105649668B (en) | Lane side shutoff type mine cooling method and cooling system | |
| CN105240040A (en) | Ventilation method of inclined shaft assisted double-hole construction | |
| CN202937292U (en) | Tunnel construction ventilating system | |
| CN102235175A (en) | Smoke elimination and dust settlement construction method for long and large tunnel and dust settlement station used in construction method | |
| CN116357373A (en) | Method for ventilating tunnel cross tunnel construction in high-altitude area | |
| CN102128047B (en) | Gas-slag separation and recovering system for drilling construction | |
| CN108756989A (en) | A kind of Tunnel Ventilation System and tunnel ventilation method | |
| CN203717020U (en) | Control system for high-altitude tunnel construction environment | |
| CN210422671U (en) | Tunnel type aeration cooling system of high temperature area double-hole tunnel | |
| CN117027901A (en) | Oxygen supply, cooling and dust removal method for tunnel construction | |
| CN106703113A (en) | Mining TBM (tunnel boring machine) water circulation system and mining TBM water circulation method | |
| CN103527236B (en) | A kind of gas tunnel compound ventilation method | |
| CN206538807U (en) | A kind of mining TBM water circulation systems | |
| US11674392B2 (en) | Split air cabin ventilation system for construction of tunnel inclined shaft and ventilation method using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |