CN202391448U - Roadway type ventilating structure of no-air door of long-distance tunnel - Google Patents
Roadway type ventilating structure of no-air door of long-distance tunnel Download PDFInfo
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- CN202391448U CN202391448U CN2011205226133U CN201120522613U CN202391448U CN 202391448 U CN202391448 U CN 202391448U CN 2011205226133 U CN2011205226133 U CN 2011205226133U CN 201120522613 U CN201120522613 U CN 201120522613U CN 202391448 U CN202391448 U CN 202391448U
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Abstract
The utility model relates to the field of tunnel construction and ventilation, and particularly relates to a roadway type ventilating structure of a no-air door of a long-distance tunnel, solving the problems that the construction investment is great, the ventilation effect is poor, the energy consumption is high and the like in the existing ventilating structure of the long-distance tunnel. The roadway type ventilating structure comprises an air blowing hole and a dirt discharging hole; a driving cross hole and a walking cross hole are arranged between the air blowing hole and the dirt discharging hole at interval; two pressing-in type axial flow fans are arranged at the first driving cross hole closest to a tunnel face of the air blowing hole and a tunnel face of the dirt discharging hole in a staggered manner; a ventilating straight pipe is arranged between one pressing-in type axial flow fan and the tunnel face of the air blowing hole; a ventilating bent pipe passing through the first driving cross hole is arranged between the other pressing-in type axial flow fan and the tunnel face of the dirt discharging hole; and flow ejecting fans are arranged in the dirt discharging hole at intervals. According to the roadway type ventilating structure, the ventilation effect is good, and the time for ventilation and smoke discharging is short, a construction progress is accelerated, the length of a ventilation pipe is shortened greatly, the operation cost is lowered, and the working environment is improved, so that the roadway type ventilating structure is suitable for double-hole tunnels with the driving cross hole between the two holes.
Description
Technical field
The utility model relates to the construction ventilation of tunnel field, and being specially a kind of length does not have air door ventilation by ducts structure apart from the tunnel.
Background technology
In growing apart from constructing tunnel, the quality of aeration technology not only is related to the healthy of operating personnel, also will directly influence the construction speed in tunnel, is the key point of control construction economy cost.At present; The length that is directed to the parallel double hole is during apart from constructing tunnel; Owing to about every interval 350m one walkway or garage's passage can be set, just in time constituted the ventilation by ducts condition, need be through not increasing parallel heading or adopting the mode of partition wall to satisfy the ventilation by ducts condition.But the present ventilation by ducts structure that adopts; Adopt omnidistance forced ventilation mode mostly, need increase input high-power forced ventilation machine and jet blower, and also each hole need be laid long apart from ventilating duct; So just increased construction cost greatly; Along with the continuous driving in tunnel, the ventilation energy consuming ratio is bigger, and ventilation effect is not ideal.
Summary of the invention
Existing long ventilation by ducts structure existence construction apart from employing in the tunnel ventilation construction has high input the utility model, problems such as ventilation effect is poor, energy consumption height in order to solve, and provides a kind of length not have air door ventilation by ducts structure apart from the tunnel.
The utility model is to adopt following technical scheme to realize: long do not have air door ventilation by ducts structure apart from the tunnel; Comprise the air-supply hole and the blowdown hole that laterally arrange; Be interval with respectively the horizontal hole of garage and the Heng Dong of People's Bank of China that connect with both between air-supply hole and the blowdown hole; The innovative point of the utility model is in the air-supply hole and distance air-supply hole face and nearest two the forced axial flow blowers of first garage horizontal hole place's interlaced arrangement of blowdown hole face; Wherein be provided with the ventilation straight tube between forced axial flow blower and the air-supply hole face, be provided with ventilation bend pipe between another forced axial flow blower and the blowdown hole face through the horizontal hole of first garage; Be laid with the jet blower of drainage direction outside the hole at interval along its longitudinal direction in the blowdown hole.
Adopt the ventilating structure of the utility model, the distinguishing feature of its draught principle is, the ventilation of tunnel tunnel face is through the axial flow blower air feed, and operation construction institute required airflow then is to rely on jet blower to solve in the middle of foul atmosphere and the tunnel.The utility model makes full use of the characteristics that two adjacent tunnels (prompt delivery wind-tunnel and blowdown hole) constitute parallel pilot tunnel each other, and along with the tunnel constantly tunnels forward, two tunnels will connect through transverse passage-way; Utilize the pressurization of jet blower self, produce huge pressure differential, overcome the tunnel frictional resistance in air-supply hole and blowdown hole; The guiding air vertically moves in the blowdown hole; The air-supply hole sucks fresh air, and foul atmosphere is got rid of in the blowdown hole, forms the ventilation systemic circulation.In addition, also through the horizontal hole of garage fresh air is sucked the blowdown hole by the air-supply hole, the hole foul atmosphere of will blowing enters the blowdown hole, between two hole faces, forms the ventilation partial circulating.
Compare with existing omnidistance forced ventilation mode, the utility model ventilation effect is good, and the ventilation smoke exhaust time is short, and flowing resistance is little, has accelerated construction speed; Air supplying distance is short, and air chimney length also shortens greatly, has reduced disposable input, has also significantly reduced the ventilation maintenance workload, and operation cost obviously reduces; Improved operating environment greatly, obtained good ventilation effect, accelerated Tunnel Construction Schedule, economic benefit and obvious social benefit are applicable to the double-hole tunnel of establishing the horizontal hole of garage between all two holes.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Among the figure: the 1-hole of blowing; 2-blowdown hole; The Heng Dong of 3-garage; The Heng Dong of 4-People's Bank of China; 5-air-supply hole face; 6-blowdown hole face; 7-first Heng Dong of garage; The forced axial flow blower of 8-; 9-ventilation straight tube; 10-ventilation bend pipe; The 11-jet blower.
The specific embodiment
Long do not have air door ventilation by ducts structure apart from the tunnel; As shown in Figure 1; Comprise the air-supply hole 1 and blowdown hole 2 that laterally arrange; Be interval with respectively the horizontal hole 3 of garage and the horizontal hole 4 of People's Bank of China that connect with both between air-supply hole and the blowdown hole; In air-supply hole 1 and nearest two the forced axial flow blowers 8 of first garage horizontal hole 7 place's interlaced arrangement of distance air-supply hole face 5 and blowdown hole face 6, wherein a forced axial flow blower and blow and be provided with ventilation straight tube 9 between the hole face 5 is provided with the ventilation bend pipe 10 through the horizontal hole 7 of first garage between another forced axial flow blower and the blowdown hole face 6; Be laid with the jet blower 11 of drainage direction outside the hole at interval along its longitudinal direction in the blowdown hole 2.In practice of construction, required Wind Coverage Calculation and axial flow blower, jet blower type selecting are well known to those of ordinary skill in the art in the hole.During practical implementation, in the blowdown hole, begin whenever at a distance from 300～700m a jet blower to be installed from the hole, quicken dirty wind circulation, the distance between the jet blower is adjusted (300～700 meters) based on smoke discharging effect in the hole.
During tunnel excavation, in Tunnel Blasting preceding 5 minutes, must turn off axial flow blower, do blowing-out and handle, in order to avoid air chimney is smashed by rock.After the explosion, open axial flow blower immediately,, open jet blower simultaneously, to accelerate flowing of foul atmosphere to the face air-supply.Along with constantly tunneling forward of tunnel, when the horizontal hole of next garage connects, two axial flow blowers in the air-supply hole are moved until the garage Heng Dong nearest apart from face, increase jet blower quantity in the blowdown hole simultaneously.
Application example
Long flat speedway rainbow ladder frontier passes and mountains tunnel total length 13.1km building one of long tunnel, also is simultaneously speedway Changzhi, Chang'an to smooth-going section controlled engineering at present domestic; Adopt the described ventilating structure of the utility model, its single port driving has reached 5300 meters, has well solved speciality highway tunnel ventilation technical barrier; Improved operating environment greatly, the toxic dust in the control construction pollutes effectively, has protected that the constructor's is healthy; Reduce construction investment, accelerated Tunnel Construction Schedule.
Claims (1)
1. one kind long is not had air door ventilation by ducts structure apart from the tunnel; Comprise the air-supply hole (1) and blowdown hole (2) that laterally arrange; Be interval with respectively the Heng Dong of garage (3) and the Heng Dong of People's Bank of China (4) that connect with both between air-supply hole and the blowdown hole; It is characterized in that in air-supply hole (1) and apart from air-supply hole face (5) and the first nearest Heng Dong of garage (7) of blowdown hole face (6), locating two forced axial flow blowers of interlaced arrangement (8); Wherein be provided with ventilation straight tube (9) between forced axial flow blower and the air-supply hole face (5), be provided with ventilation bend pipe (10) between another forced axial flow blower and the blowdown hole face (6) through first Heng Dong of garage (7); Be laid with the jet blower (11) of drainage direction outside the hole at interval along its longitudinal direction in the blowdown hole (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205226133U CN202391448U (en) | 2011-12-14 | 2011-12-14 | Roadway type ventilating structure of no-air door of long-distance tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205226133U CN202391448U (en) | 2011-12-14 | 2011-12-14 | Roadway type ventilating structure of no-air door of long-distance tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202391448U true CN202391448U (en) | 2012-08-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205226133U Expired - Fee Related CN202391448U (en) | 2011-12-14 | 2011-12-14 | Roadway type ventilating structure of no-air door of long-distance tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202391448U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN106089280A (en) * | 2016-07-14 | 2016-11-09 | 西南交通大学 | A kind of underground large-scale cave depot group network laneway type construction ventilation method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN109057851A (en) * | 2018-08-09 | 2018-12-21 | 湖南科技大学 | The critical effective wind rate determination method of the deduster of vcehicular tunnel open-circuit ventilation system |
| CN109139081A (en) * | 2018-09-20 | 2019-01-04 | 中铁局集团第五工程有限公司 | A kind of high methane Extra Long Tunnel Construction method of ventilation |
| CN109667614A (en) * | 2018-12-18 | 2019-04-23 | 中铁十六局集团有限公司 | One kind being used for long distance tunnel relay-type method of ventilation |
| CN111794796A (en) * | 2020-07-14 | 2020-10-20 | 中电建路桥集团有限公司 | Permanent and temporary combined roadway type ventilation method |
| CN112211659A (en) * | 2020-10-19 | 2021-01-12 | 中铁六局集团有限公司 | Tunnel ventilation method |
| CN112228137A (en) * | 2020-11-03 | 2021-01-15 | 云南交投集团云岭建设有限公司 | Method for improving ventilation of extra-long tunnel |
-
2011
- 2011-12-14 CN CN2011205226133U patent/CN202391448U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314600A (en) * | 2014-09-05 | 2015-01-28 | 中铁五局（集团）有限公司 | Method for constructing and ventilating three parallel tunnels |
| CN104314600B (en) * | 2014-09-05 | 2016-08-24 | 中铁五局（集团）有限公司 | Article three, the construction ventilation method of Parallel Tunnel |
| CN106089280A (en) * | 2016-07-14 | 2016-11-09 | 西南交通大学 | A kind of underground large-scale cave depot group network laneway type construction ventilation method |
| CN106837401A (en) * | 2017-03-23 | 2017-06-13 | 中铁五局集团成都工程有限责任公司 | Narrow tunnel isolates aeration structure |
| CN109057851A (en) * | 2018-08-09 | 2018-12-21 | 湖南科技大学 | The critical effective wind rate determination method of the deduster of vcehicular tunnel open-circuit ventilation system |
| CN109057851B (en) * | 2018-08-09 | 2019-09-10 | 湖南科技大学 | The critical effective wind rate determination method of the deduster of vcehicular tunnel open-circuit ventilation system |
| CN109139081A (en) * | 2018-09-20 | 2019-01-04 | 中铁局集团第五工程有限公司 | A kind of high methane Extra Long Tunnel Construction method of ventilation |
| CN109667614A (en) * | 2018-12-18 | 2019-04-23 | 中铁十六局集团有限公司 | One kind being used for long distance tunnel relay-type method of ventilation |
| CN111794796A (en) * | 2020-07-14 | 2020-10-20 | 中电建路桥集团有限公司 | Permanent and temporary combined roadway type ventilation method |
| CN112211659A (en) * | 2020-10-19 | 2021-01-12 | 中铁六局集团有限公司 | Tunnel ventilation method |
| CN112211659B (en) * | 2020-10-19 | 2022-08-23 | 中铁六局集团有限公司 | Tunnel ventilation method |
| CN112228137A (en) * | 2020-11-03 | 2021-01-15 | 云南交投集团云岭建设有限公司 | Method for improving ventilation of extra-long tunnel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120822 Termination date: 20191214 |