CN114033468B - Multi-channel tunnel sectional type ventilation method - Google Patents
Multi-channel tunnel sectional type ventilation method Download PDFInfo
- Publication number
- CN114033468B CN114033468B CN202111390131.1A CN202111390131A CN114033468B CN 114033468 B CN114033468 B CN 114033468B CN 202111390131 A CN202111390131 A CN 202111390131A CN 114033468 B CN114033468 B CN 114033468B
- Authority
- CN
- China
- Prior art keywords
- inclined shaft
- positive hole
- axial flow
- flow fan
- channel
- 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.)
- Active
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Abstract
A multi-channel tunnel sectional ventilation method comprises the following steps: when the inclined shaft I and the inclined shaft II are excavated towards the positive hole I and the positive hole II respectively, an axial flow fan I is arranged in the inclined shaft I, an axial flow fan II is arranged in the inclined shaft II, a transverse channel is excavated between the positive hole I and the positive hole II, outlets at two ends of the transverse channel are respectively close to the inclined shaft I and the inclined shaft II, the inclined shaft I is used as an exhaust channel, the inclined shaft II is used as an air inlet channel, the positive hole I and the positive hole II continue to excavate forwards, an air outlet of the air pipe II points to the positive hole second face, and the air pipe I extends to be arranged through the newly excavated transverse channel and leads an air outlet of the air pipe to point to the positive hole first face. The invention provides a multi-channel tunnel sectional type ventilation method, which can rapidly and effectively seal a cable notch by adopting the matched use relation of sealing cement, a first heat shrinkage pipe and a second heat shrinkage pipe, thereby improving the working efficiency in the cable installation process and greatly improving the sealing performance.
Description
Technical Field
The invention relates to the technical field of tunnel ventilation, in particular to a multi-channel tunnel sectional type ventilation method.
Background
In the multi-channel tunnel subsection construction process, inclined shaft or parallel pilot tunnel construction is generally adopted to increase the construction working face, but a tunnel construction ventilation system of the inclined shaft or the parallel pilot tunnel is complex, and the construction ventilation difficulty is increased, so that a brand new and efficient tunnel construction ventilation method is required to be provided.
Disclosure of Invention
The invention aims to provide a multi-channel tunnel sectional type ventilation method to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions: the multi-channel tunnel sectional type ventilation method is used for realizing ventilation of two parallel positive holes and inclined shafts communicated with the positive holes, wherein the positive holes comprise a positive hole I and a positive hole II, and the inclined shafts comprise an inclined shaft I and an inclined shaft II, and comprises the following steps:
step one: when the inclined shaft I and the inclined shaft II excavate towards the positive hole I and the positive hole II respectively, an axial flow fan I is arranged in the inclined shaft I, an axial flow fan II is arranged in the inclined shaft II, the axial flow fan I is connected with a wind pipe I for conveying wind power, an air outlet of the wind pipe I points to a tunnel face of the inclined shaft I, the axial flow fan II is connected with a wind pipe II for conveying wind power, and an air outlet of the wind pipe II points to a tunnel face of the inclined shaft II until the two inclined shafts are respectively communicated with the positive hole;
step two: digging a transverse channel between the first positive hole and the second positive hole, wherein outlets at two ends of the transverse channel are respectively close to the first inclined shaft and the second inclined shaft, the first inclined shaft is used as an exhaust channel, the second inclined shaft is used as an air inlet channel, the first axial flow fan and the second axial flow fan are uniformly arranged in the second inclined shaft at the moment, an air outlet of the air pipe II is directed at the face of the second positive hole, and the air pipe I is extended and arranged through the transverse channel I, and the air outlet of the air pipe I is directed at the face of the first positive hole;
step three: the first main hole and the second main hole continue to excavate forwards, and a next transverse channel is excavated, at the moment, the wind shielding wall is used for sealing the previous transverse channel, the first axial flow fan and the second axial flow fan are arranged in the second main hole at a position which is a distance away from the outlet of the newly excavated transverse channel, the air outlet of the second air pipe points to the face of the second main hole, and the air outlet of the first air pipe extends and is arranged through the newly excavated transverse channel and points to the face of the first main hole;
step four: and step three, repeating until the construction is completed, wherein the excavated other transverse channels are all closed through the wind shielding wall before the next new transverse channel is excavated.
Further, in the step of uniformly distributing the axial flow fans I and II in the inclined shaft II, the method further comprises the following steps:
the inclined shaft I, the inclined shaft II and the transverse channel are respectively provided with a preset number of jet fans, and the jet fans in the inclined shaft I, the inclined shaft II and the transverse channel are all arranged in a straight line along the opening direction of the well or the channel, wherein the jet fans in the inclined shaft II are positioned behind the axial flow fan I and the axial flow fan II.
Further, in the step of arranging the axial flow fan I and the axial flow fan II in the positive hole II at a position which is a distance before the outlet of the newly excavated transverse channel, the method further comprises the following steps:
the jet fans with preset numbers are respectively arranged in the first positive hole, the second positive hole, the first inclined shaft, the second inclined shaft and the transverse channel, and the jet fans in the first positive hole, the second positive hole, the first inclined shaft, the second inclined shaft and the new transverse channel are all arranged in a straight line along the opening direction of the well or the channel, wherein the jet fans in the second positive hole are positioned behind the first axial flow fan and the second axial flow fan.
According to the technical scheme, the multi-channel sectional type ventilation method for the tunnel can be applied to long-distance tunnel construction ventilation such as double-tunnel or parallel pilot tunnel and inclined shaft, can effectively avoid cross contamination of polluted air, ensures air circulation in the tunnel, further improves construction safety, is convenient to construct, can greatly shorten construction period and accelerates construction progress; the ventilation equipment is common, has wide application coverage, can be reused, and has the positive effects of low investment cost, convenient maintenance and the like.
Drawings
FIG. 1 is a schematic diagram of a tunnel with a positive hole and an inclined shaft not connected;
FIG. 2 is a schematic diagram of a tunnel with a tunnel being in communication with an inclined shaft and having a lateral passageway being excavated;
FIG. 3 is a schematic view of a tunnel in the present invention when the positive hole is connected to the inclined shaft and two or more tunnels are opened in the lateral passage.
In the figure: the method comprises the following steps of 10 to-be-excavated positive holes, 11 to-be-excavated positive holes, 111 to-be-excavated positive holes, 20 to-be-excavated positive holes, 21 to-be-excavated positive holes, 211 to-be-excavated positive holes, 01 to-be-excavated transverse channels, 011 to-be-excavated transverse channels, 02 to-be-excavated transverse channels, 021 to-be-transverse channels, 30 to-be-inclined shafts, 31 to-be-inclined shafts, 40 to-be-inclined shafts, 41 to-be-inclined shafts, 50 to-be-inclined shafts, 51 to-be-excavated air pipes, 60 to-be-drilled axial fans, 61 to-be-air pipes, 70 to-be-jet fans and 80 wind shields.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to fig. 1-3.
The scheme adopts a multi-channel tunnel sectional type ventilation method, which is suitable for realizing ventilation on two parallel positive holes and inclined shafts communicated with the positive holes, wherein the positive holes comprise a positive hole I11 and a positive hole II 21, and the inclined shafts comprise an inclined shaft I30 and an inclined shaft II 40.
As shown in fig. 1, the illustration is a tunnel construction state diagram when the main hole and the inclined hole are not communicated in the first step, at this time, the main hole 11 and the main hole 21 are not excavated, at this time, the main hole 10 to be excavated and the main hole 20 to be excavated in the illustration, the inclined hole 30 and the inclined hole 40 are respectively excavated towards the main hole 10 to be excavated and the main hole 20 to be excavated, an axial fan 50 is arranged in the inclined hole 40, an axial fan 60 is arranged in the inclined hole 30, the axial fan 50 is connected with a first air pipe 51 for conveying wind force, an air outlet of the first air pipe 51 is directed towards the first palm face 31 of the inclined hole, the axial fan 60 is connected with a second air pipe 61 for conveying wind force, and an air outlet of the second air pipe 61 is directed towards the second palm face 41 of the inclined hole until the two inclined holes are respectively communicated with the main hole.
Here, it will be understood by those skilled in the art that the axial flow fan is used to respectively ventilate the inclined shaft, so that the air outlet of the air pipe one 51 is located at one side of the inside of the shaft, and after the air outlet, the air direction is swirled by the inclined shaft one face 31 and is discharged outwards along the length direction of the inclined shaft one 30; similarly, the air outlet of the second air duct 61 is located at one side of the well, and after the air is exhausted, the air is swirled by the second inclined shaft face 41 and is exhausted outwards along the length direction of the second inclined shaft 40.
Referring to fig. 2, the tunnel is shown as a schematic diagram of a tunnel in which a positive hole is connected to an inclined shaft and a transverse channel is excavated in the second step, in which a transverse channel 01 to be excavated is excavated in the first step, an opening at one end of the transverse channel is located opposite to an outlet of the inclined shaft 40, and an opening at the other end of the transverse channel is located adjacent to an outlet of the inclined shaft 30, in which the inclined shaft 30 is used as an air exhaust channel, the inclined shaft 40 is used as an air intake channel, at this time, the axial fans 50 and 60 are uniformly distributed in the inclined shaft 50, an air outlet of the air pipe 61 is directed to the face 211 of the positive hole, and the air pipe 51 is arranged to extend through the transverse channel 011 and the air outlet is directed to the face 111 of the positive hole.
Here, it will be understood by those skilled in the art that, after the first transverse channel 011 is opened, the first inclined shaft 30 and the second inclined shaft 40 are communicated through the first transverse channel 011, and the first axial flow fan 50 and the second axial flow fan 60 are respectively used for supplying air to ensure the air supply in the first positive hole 11 and the second positive hole 21, and meanwhile, in order to further facilitate ventilation and air guiding, the jet fans 70 are uniformly distributed in the first inclined shaft 30, the second inclined shaft 40 and the first transverse channel 011, and the jet fans 70 are arranged in the length direction in the inclined shaft or the first transverse channel 011, so that effective wind direction drainage can be formed to ensure efficient circulation of air flow.
Referring to fig. 3, the tunnel is shown in the step three when the main hole is communicated with the inclined shaft and two or more transverse channels are excavated, that is, on the basis of the step two, the main hole 11 and the main hole two are excavated forward simultaneously, and circulation of air flow is realized by using the inclined shaft 30 and the inclined shaft 40, in the step, the main hole 11 and the main hole two 21 continue to excavate forward, and a new transverse channel (i.e. the transverse channel two 021) is excavated when the transverse channel two 02 to be excavated is located, at this time, the wind shielding wall 80 is used to seal the previous transverse channel (i.e. the transverse channel one 011), and the axial flow fan one 50 and the axial flow fan two 60 are arranged in the main hole two 21 at a distance before the outlet of the transverse channel newly excavated (i.e. the transverse channel two 021), the air outlet of the air pipe two 61 is directed to the main hole two palm face 211, and the air pipe one 51 extends through the newly excavated transverse channel (i.e. the transverse channel two 021) and the air outlet is directed to the main hole one palm face 111.
Here, it can be understood by those skilled in the art that, on the basis of the second step, by following the positions of the first axial flow fan 50 and the second axial flow fan 60 and plugging the transverse channel one 011 after the previous excavation, the inclined shaft two 40, the positive hole two 21, the transverse channel two 021, the positive hole one 11 and the inclined shaft one 30 form an air flow channel, meanwhile, in order to further facilitate ventilation and air guiding, jet fans 70 are arranged in the inclined shaft one 30, the inclined shaft two 40, the positive hole one 11, the positive hole two 21 and the transverse channel two 021, and the jet fans 70 can form effective air flow drainage by being arranged in the length directions of the inclined shaft, the positive hole and the channels so as to ensure efficient circulation of air flow.
In the fourth step, the construction method of the third step is repeated until the construction is completed, and it should be noted that the remaining excavated transverse channels are all closed by the wind shielding wall before the next new transverse channel is excavated, and it should be noted that, in order to ensure the smoothness of the air flow, the wind shielding walls should be respectively arranged at the outlets at the two ends of the transverse channel, so as to ensure that the wind shielding wall 80 and the inner wall of the positive tunnel are located on the same surface, thereby reducing turbulence and improving the air flow stability.
In the scheme, the adopted axial flow fan can be a 160KW axial flow fan but is not limited to the 160KW axial flow fan, the adopted air pipe is phi 1.8m, the adopted jet flow fan can be 55KW but is not limited to the 55KW axial flow fan, and the distance between the air inlet of the air pipe and the tunnel face of the main tunnel is not more than 15 meters.
The above examples are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solution of the present invention should fall within the scope of protection defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (3)
1. The multi-channel tunnel sectional type ventilation method is used for realizing ventilation of two parallel positive holes and inclined shafts communicated with the positive holes, wherein the positive holes comprise a positive hole I and a positive hole II, and the inclined shafts comprise an inclined shaft I and an inclined shaft II, and is characterized by comprising the following steps:
step one: when the inclined shaft I and the inclined shaft II excavate towards the positive hole I and the positive hole II respectively, an axial flow fan I is arranged in the inclined shaft I, an axial flow fan II is arranged in the inclined shaft II, the axial flow fan I is connected with a wind pipe I for conveying wind power, an air outlet of the wind pipe I points to a tunnel face of the inclined shaft I, the axial flow fan II is connected with a wind pipe II for conveying wind power, and an air outlet of the wind pipe II points to a tunnel face of the inclined shaft II until the two inclined shafts are respectively communicated with the positive hole;
step two: digging a transverse channel between the first positive hole and the second positive hole, wherein outlets at two ends of the transverse channel are respectively close to the first inclined shaft and the second inclined shaft, the first inclined shaft is used as an exhaust channel, the second inclined shaft is used as an air inlet channel, the first axial flow fan and the second axial flow fan are uniformly arranged in the second inclined shaft at the moment, an air outlet of the air pipe II is directed at the face of the second positive hole, and the air pipe I is extended and arranged through the transverse channel I, and the air outlet of the air pipe I is directed at the face of the first positive hole;
step three: the first main hole and the second main hole continue to excavate forwards, and a next transverse channel is excavated, at the moment, the wind shielding wall is used for sealing the previous transverse channel, the first axial flow fan and the second axial flow fan are arranged in the second main hole at a position which is a distance away from the outlet of the newly excavated transverse channel, the air outlet of the second air pipe points to the face of the second main hole, and the air outlet of the first air pipe extends and is arranged through the newly excavated transverse channel and points to the face of the first main hole;
step four: and step three, repeating until the construction is completed, wherein the excavated other transverse channels are all closed through the wind shielding wall before the next new transverse channel is excavated.
2. The multi-channel tunnel sectional ventilation method according to claim 1, wherein in the step of uniformly distributing the axial flow fan one and the axial flow fan two in the inclined shaft two, the method further comprises the steps of:
the inclined shaft I, the inclined shaft II and the transverse channel are respectively provided with a preset number of jet fans, and the jet fans in the inclined shaft I, the inclined shaft II and the transverse channel are all arranged in a straight line along the opening direction of the well or the channel, wherein the jet fans in the inclined shaft II are positioned behind the axial flow fan I and the axial flow fan II.
3. A multi-channel tunnel staged ventilation method as claimed in claim 1, wherein: in the step of arranging the axial flow fan I and the axial flow fan II in the positive hole II at a position which is a distance before the outlet of the newly excavated transverse channel, the method further comprises the following steps:
the jet fans with preset numbers are respectively arranged in the first positive hole, the second positive hole, the first inclined shaft, the second inclined shaft and the transverse channel, and the jet fans in the first positive hole, the second positive hole, the first inclined shaft, the second inclined shaft and the new transverse channel are all arranged in a straight line along the opening direction of the well or the channel, wherein the jet fans in the second positive hole are positioned behind the first axial flow fan and the second axial flow fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390131.1A CN114033468B (en) | 2021-11-19 | 2021-11-19 | Multi-channel tunnel sectional type ventilation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111390131.1A CN114033468B (en) | 2021-11-19 | 2021-11-19 | Multi-channel tunnel sectional type ventilation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114033468A CN114033468A (en) | 2022-02-11 |
| CN114033468B true CN114033468B (en) | 2023-05-23 |
Family
ID=80138622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111390131.1A Active CN114033468B (en) | 2021-11-19 | 2021-11-19 | Multi-channel tunnel sectional type ventilation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114033468B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301859A (en) * | 2018-03-23 | 2018-07-20 | 西南交通大学 | A kind of Large Underground water seal cave depot group push-pull type construction ventilation method and its system |
| CN109958467A (en) * | 2019-04-16 | 2019-07-02 | 中铁十七局集团第二工程有限公司 | A kind of dust control by ventilation method for constructing tunnel |
| CN111188645A (en) * | 2020-03-20 | 2020-05-22 | 上海进贤机电科技有限公司 | Ventilation system of multi-station axial flow fan for tunnel |
| CN112780330A (en) * | 2021-02-19 | 2021-05-11 | 中交第二公路工程局有限公司 | Construction ventilation method for parallel three-hole tunnel press-in type ventilation |
| WO2021196707A1 (en) * | 2020-03-31 | 2021-10-07 | 中铁五局集团有限公司 | Staged ventilation method based on construction of complex cavern group |
-
2021
- 2021-11-19 CN CN202111390131.1A patent/CN114033468B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108301859A (en) * | 2018-03-23 | 2018-07-20 | 西南交通大学 | A kind of Large Underground water seal cave depot group push-pull type construction ventilation method and its system |
| CN109958467A (en) * | 2019-04-16 | 2019-07-02 | 中铁十七局集团第二工程有限公司 | A kind of dust control by ventilation method for constructing tunnel |
| CN111188645A (en) * | 2020-03-20 | 2020-05-22 | 上海进贤机电科技有限公司 | Ventilation system of multi-station axial flow fan for tunnel |
| WO2021196707A1 (en) * | 2020-03-31 | 2021-10-07 | 中铁五局集团有限公司 | Staged ventilation method based on construction of complex cavern group |
| CN112780330A (en) * | 2021-02-19 | 2021-05-11 | 中交第二公路工程局有限公司 | Construction ventilation method for parallel three-hole tunnel press-in type ventilation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114033468A (en) | 2022-02-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112780330A (en) | Construction ventilation method for parallel three-hole tunnel press-in type ventilation | |
| CN101225746A (en) | Laneway type ventilating technique for long and large tunnel | |
| CN203097922U (en) | Multiple-working face ventilation structure for long and large tunnel | |
| CN104405430A (en) | Ventilation system and ventilation method for single-cavern large-section extra-long tunnel construction | |
| CN114033468B (en) | Multi-channel tunnel sectional type ventilation method | |
| CN102748057B (en) | Ventilating system and ventilating method used for long-distance roadway tunneling | |
| CN109139081B (en) | High-gas ultra-long tunnel construction ventilation method | |
| CN108301859A (en) | A kind of Large Underground water seal cave depot group push-pull type construction ventilation method and its system | |
| CN112228136A (en) | System for rapidly discharging toxic and harmful gas in sealed roadway and using method | |
| CN112012737A (en) | Modularized fully-mechanized excavating face air curtain device and using method | |
| CN205243548U (en) | High gas tunnel ventilation by ducts construction structures | |
| CN215672305U (en) | Multi-middle-section unilateral long-distance single-head tunneling relay ventilation system | |
| CN102102527A (en) | Single inclined shaft double positive hole jetting and ventilation technology | |
| CN205189926U (en) | High gas tunnel ventilation construction structures | |
| CN201963330U (en) | Mechanical panel ventilation system | |
| CN108756989B (en) | Tunnel ventilation system and tunnel ventilation method | |
| CN212508400U (en) | Mine driving face dust removal device | |
| CN108591085A (en) | A kind of novel fire resistant smoke exhaust fan | |
| CN212225294U (en) | Assembled special-shaped air duct for long-distance tunnel construction ventilation | |
| CN212716709U (en) | Ventilation and cooling system based on high-ground-temperature tunnel | |
| CN214787496U (en) | Construction ventilation structure of supplementary parallel three hole method tunnels of shaft | |
| CN214787495U (en) | Press-in type ventilation structure of parallel three-hole tunnel | |
| CN211549759U (en) | Many working faces of long tunnel ventilation structure | |
| CN111677539A (en) | Ventilation and cooling system based on high-ground-temperature tunnel | |
| CN105298594A (en) | Smoke discharging and flow jetting device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |