CN215213565U - Ventilation and noise reduction structure for working surface of underground excavation tunnel - Google Patents
Ventilation and noise reduction structure for working surface of underground excavation tunnel Download PDFInfo
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- CN215213565U CN215213565U CN202121298901.5U CN202121298901U CN215213565U CN 215213565 U CN215213565 U CN 215213565U CN 202121298901 U CN202121298901 U CN 202121298901U CN 215213565 U CN215213565 U CN 215213565U
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- ventilation
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Abstract
The utility model relates to a subsurface tunnel working face ventilation amortization structure comprises ventilation unit, fixing device and amortization material. The ventilation device is provided with a large-air-volume jet fan at the wellhead of the inclined shaft, air flows into large and small mileage holes of an up-down line of the tunnel through a large-diameter soft air pipe, a centrifugal fan is respectively arranged in each mileage hole, a local fan is arranged at the position, close to the face, of each mileage hole and corresponds to the centrifugal fan, and the fans are fixed on the inner side wall of the tunnel hole through fixing plates; the silencing material is a sound-absorbing filling material and silencing cotton and is arranged in a ventilation hose communicated with the local fan. The utility model discloses ventilation effect is good, can effectually eliminate the noise pollution of different frequencies in the tunnel, and the device is installed and is dismantled easily simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the tunnel ventilation technique and specifically relates to an undercut tunnel working face ventilation amortization structure.
Background
In recent years, a large number of extra-long tunnels are built, most of the extra-long tunnels adopt a construction mode of arranging an auxiliary tunnel of an inclined shaft, air is fed and exhausted through the inclined shaft, the tunnel is constructed by entering a single inclined shaft into a double-hole, generally, four working faces are constructed at the same time, the construction conditions of traffic and tunnel blasting excavation are met, a large amount of pollutants such as dust can be generated in the hole, the discharge is relatively difficult, the pollution is more and more serious along with the deep penetration of the tunnel, in the operation process of a normal ventilation device, a fan impeller can generate rotary eddy noise, meanwhile, noise generated by other vehicles and large machinery is generated, the noise is distributed in a concentrated mode and is difficult to eliminate, the ventilation and noise elimination problem is also made to be an important problem in tunnel construction, the health of personnel in the tunnel can be damaged for a long time under the environment, and the driving safety in the tunnel can be influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the ventilation effect that adopts traditional ventilation structure to exist in the construction of many operation faces of present undercut tunnel poor, construction cost is high, the energy consumption is high, the big scheduling problem of noise, the utility model provides a undercut tunnel working face ventilation amortization structure.
The utility model relates to a ventilation and noise reduction structure for the working face of an underground excavation tunnel, which consists of a ventilation device, a fixing device and noise reduction materials, wherein the ventilation device is provided with a large air volume jet fan (1) at the well mouth of an inclined shaft (2) and is provided with an air door (4), air flows to large and small mileage holes of an up line and a down line of the tunnel through a large-diameter soft air pipe (3), each mileage hole is internally provided with a centrifugal fan (5), a local fan (6) is arranged at the position, close to the face, of each mileage hole, a fixing plate (11) is arranged outside the fan and the ventilation pipe, and the fan and the ventilation pipe are fixed by penetrating a long screw rod (18) through a threaded hole (10) on the side face of the fixing plate (11) and then penetrating into the side wall of the tunnel; the silencing material is a sound-absorbing filling material (9) and silencing cotton (12) which are arranged in a ventilation hose (7) communicated with the local fan (6).
The utility model has the advantages that: the ventilation effect is good, the ventilation and smoke exhaust time is short, the ventilation resistance is small, and the construction progress is accelerated; the air supply distance of the air pipe is shortened, a large number of air pipes are saved, the air pipe maintenance workload is reduced, labor employment is reduced, the overall economic benefit is obvious, the construction mode that a plurality of excavation faces are excavated simultaneously after the inclined shaft enters the mileage cave is met, and the air pipe excavation construction method has certain popularization value and application value.
The utility model discloses a structural design in service behavior: by applying the jet ventilation technology, fresh air is introduced into the tunnel hole by using the large-air-volume jet fan and the large-diameter flexible air pipe, and is delivered to each excavation surface by the local fan and the centrifugal fan, so that dirty air is discharged out of the hole through the inclined shaft, and noise caused by the fan is reduced by the silencing cotton and the sound-absorbing filling material.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 the utility model discloses a ventilation pipe side view schematic diagram.
Fig. 3 is a schematic side view of the fixing device of the present invention.
Reference numerals: 1 big amount of wind efflux fan, 2 inclined shaft, 3 major diameter air hose, 4 air doors, 5 centrifugal fan, 6 office fan, 7 ventilation hose, 8 tunnel cross passageways, 9 inhale sound filling material, 10 screw holes, 11 fixed plates, 12 amortization cotton, 13 flexure strips, 14 little mileage palm faces of upward line, 15 little mileage palm faces of downward line, 16 big mileage palm faces of upward line, 17 big mileage palm faces of downward line, 18 long screw rods.
Detailed Description
According to the attached drawing, the ventilation and noise reduction structure for the working face of the underground excavation tunnel consists of a ventilation device, a fixing device and noise reduction materials, wherein the ventilation device is provided with a large air volume jet fan (1) at the well mouth of an inclined shaft (2), an air door (4) is installed, air flows to large and small mileage holes of an up-down line of the tunnel through a large-diameter soft air pipe (3), a centrifugal fan (5) is respectively arranged in each mileage hole, a local fan (6) is arranged at the position, close to the tunnel face, of each mileage hole, the local fans (6) correspond to the centrifugal fans (5), fixing plates (11) are arranged outside the fans and the ventilation pipes, and the fans and the ventilation pipes are fixed by penetrating long screws (18) through threaded holes (10) in the side faces of the fixing plates (11) and then penetrating into the side walls of the tunnel; the sound-absorbing material is a sound-absorbing filling material (9) and sound-absorbing cotton (12) which are arranged in a ventilation hose (7) communicated with the fan.
As an improvement, in order to prevent air backflow and ensure that the air quantity is sufficient, and the air quantity can be introduced into a tunnel hole and near a tunnel face, a large-air-quantity jet fan (1) is arranged at a wellhead of an inclined shaft (2), and a local fan (6) and a centrifugal fan (5) are arranged in each mileage hole of the tunnel to correspond to each other.
As an improvement, in order to prevent the circulation of the dirty air, a ventilation door (4) is arranged at the hole of the inclined shaft (2).
As an improvement, in order to prevent noise diffusion, improve the noise absorption effect and eliminate noise pollution with different frequencies in the tunnel, a sound absorption filling material (9) and a silencing cotton (12) are arranged in the ventilation hose (7).
As an improvement, in order to ensure that the fan and the ventilation pipe can be safely fixed on the side wall of the tunnel and the ventilation is normal, the fixing plate (11) is sleeved outside the fan and the ventilation pipe, and the long screw (18) penetrates through a threaded hole (10) in the side face of the fixing plate (11) and then is driven into the side wall of the tunnel to fix the fan and the ventilation pipe.
As an improvement, in order to ensure that the fixing plate (11) and the ventilation hose (7) are well fixed and sleeved, an elastic sheet (13) is arranged on the fixing plate (11), and the ventilation hose (7) penetrates through the elastic sheet (13).
Claims (6)
1. The utility model provides an undercut tunnel working face ventilation amortization structure which characterized in that: including ventilation unit, fixing device and noise reduction material, ventilation unit includes big amount of wind efflux fan (1), ventilation hose (7), major diameter air hose (3), local fan (6), centrifugal fan (5) and air door (4), big amount of wind efflux fan (1) set up in inclined shaft (2) well head department, go up to the tunnel through major diameter air hose (3), down the line greatly, supply air in the little mileage hole, set up centrifugal fan (5) in every hole, face department is provided with local fan (6) in every hole, install noise reduction material in ventilation hose (7) of local fan (6), every fan passes through fixed plate (11) and fixes on the tunnel lateral wall.
2. The underground excavated tunnel working face ventilation and noise reduction structure according to claim 1, wherein: a large air volume jet fan (1) is arranged at the wellhead of the inclined shaft (2), and a local fan (6) and a centrifugal fan (5) are arranged in each mileage hole of the tunnel to correspond to each other.
3. The underground excavated tunnel working face ventilation and noise reduction structure according to claim 1, wherein: an air door (4) is arranged at the hole of the inclined shaft (2).
4. The underground excavated tunnel working face ventilation and noise reduction structure according to claim 1, wherein: a sound absorbing filler (9) and a noise reducing cotton (12) are installed in the ventilation hose (7).
5. The underground excavated tunnel working face ventilation and noise reduction structure according to claim 1, wherein: a fixing plate (11) is arranged outside each fan and each ventilation pipe, and the fan and the ventilation pipes are fixed by penetrating a long screw (18) through a threaded hole (10) in the side face of the fixing plate (11) and then driving the long screw into the side wall of the tunnel.
6. The underground excavated tunnel working face ventilation and noise reduction structure according to claim 1, wherein: an elastic sheet (13) is arranged on the fixing plate (11), and the ventilation hose (7) passes through the elastic sheet (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121298901.5U CN215213565U (en) | 2021-06-10 | 2021-06-10 | Ventilation and noise reduction structure for working surface of underground excavation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121298901.5U CN215213565U (en) | 2021-06-10 | 2021-06-10 | Ventilation and noise reduction structure for working surface of underground excavation tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213565U true CN215213565U (en) | 2021-12-17 |
Family
ID=79424816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121298901.5U Expired - Fee Related CN215213565U (en) | 2021-06-10 | 2021-06-10 | Ventilation and noise reduction structure for working surface of underground excavation tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213565U (en) |
-
2021
- 2021-06-10 CN CN202121298901.5U patent/CN215213565U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211217 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |