CN102536293A - Two-line tunnel based on sharing of exhaust communication air passage and ventilation vertical shaft - Google Patents
Two-line tunnel based on sharing of exhaust communication air passage and ventilation vertical shaft Download PDFInfo
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- CN102536293A CN102536293A CN2012100282136A CN201210028213A CN102536293A CN 102536293 A CN102536293 A CN 102536293A CN 2012100282136 A CN2012100282136 A CN 2012100282136A CN 201210028213 A CN201210028213 A CN 201210028213A CN 102536293 A CN102536293 A CN 102536293A
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Abstract
The invention discloses a two-line tunnel based on the sharing of an exhaust communication air passage and a ventilation vertical shaft. The two-line tunnel comprises a two-line tunnel and a plurality of underground fan rooms arranged at the outer side of the two-line tunnel, wherein the underground fan rooms are provided with an uplink air conveying communication air passage, a downlink air conveying communication air passage and an exhaust communication air passage, the three air passages respectively and transverse pass through the underground fan rooms, in addition, crossed parts of the air passages and the underground fan rooms are provided with axial flow fans, one end of the exhaust communication air passage is communicated with a downlink tunnel, the middle part of the exhaust communication air passage is communicated with an uplink tunnel, the other end of the exhaust communication air passage is connected with the ventilation vertical shaft, one end of the uplink air conveying communication air passage is communicated with the uplink tunnel, one end of the downlink air conveying communication air passage is communicated with the downlink tunnel, and the other ends of the uplink air conveying communication air passage and the downlink air conveying communication air passage are respectively connected with the ventilation vertical shaft. The two-line tunnel provided by the invention shares the exhaust communication air passage and the ventilation vertical shaft, and the engineering quantity of civil engineering structures of a ventilation system can be reduced, so the corresponding engineering cost is reduced, and the construction period is shortened.
Description
Technical field
The invention belongs to the tunnel ventilation design field, be specifically related to a kind of double track tunnel based on shared air draft contact air channel and airshaft.
Background technology
Along with the develop rapidly that highway in China is built, Tunnel Design and construction technology have obtained great advance.By the end of the year 2010, kilometer surplus the seat surplus highway in China tunnel sum reaches 7300, total length about 5100.The super long tunnel of a collection of length greater than 5km appears, like the long Bao Jiashan tunnel in tunnel in the long big level ground in the long tunnel, the Zhonnanshan Mountain, the Qinling Mountains of 18.3km, 12.3km, 12.1km etc.Along with the growing up day by day of highway tunnel, tunnel operation ventilating problem has become one of controlled technology of 21 century restriction long highway tunnel design and construction.In order new wind to be provided to the tunnel, to discharge tail gas and smog in the vehicle ' process simultaneously, and during fire in order to smoke evacuation, the speciality highway tunnel that surpasses certain-length need be provided with in order to the airshaft that ventilates, underground Ventilator Room, contact air channel etc. usually.
Such as, tunnel, the Zhonnanshan Mountain, the Qinling Mountains is provided with underground Ventilator Room in 3 places and airshaft.The underground Ventilator Room in every place is provided with 2 air-supply contact air channels and 2 air draft contact air channels, links up with uplink tunnel, downlink tunnel.Underground Ventilator Room width 10m, the stalk height is 9.6m, crane rail spacing 11m, the Ventilator Room clear height is 14.40m.Its Ventilator Room reaches 160m, and wherein air draft contact air channel does not consider that shared is a reason.Left tunnel line is provided with 2 place's airshafts in the big level ground, right line is provided with 3 place's vertical shafts, and each vertical shaft does not consider that all left and right sides line is shared.
And for example, three length that Zhejiang Province builds over nearly 5 years surpass the speciality highway tunnel of 6km, have also adopted underground Ventilator Room form, and Ventilator Room adopts the stalk arch, and clear span is 10m, and clear height is 11.16m, headroom basal area 103m
2As draw together No. 2 ground, Cangshan machine room lower and arranged smoke vent, exhast duct, transport channel, air delivery duct along its length successively, reach 105.7m only.
Underground Ventilator Room is because section is big, and every linear meter(lin.m.) cost is higher, and generally about 100,000/m, it is also millions of at least several at most ten million to build the expense of place's airshaft, and receives the mountain tunnel limit for depth, often is difficult to confirm suitable vertical shaft position.Therefore, if can adopt the underground Ventilator Room in the shared place of double track tunnel, will have very high economic worth of project.
Summary of the invention
To the above-mentioned technological deficiency of existing in prior technology, the invention provides a kind of double track tunnel based on shared air draft contact air channel and airshaft, can reduce the engineering quantity and the cost of ventilation system civil engineering structure.
A kind of double track tunnel based on shared air draft contact air channel and airshaft comprises double track tunnel and some the underground Ventilator Rooms of being located at the double track tunnel outside; Described double track tunnel comprises uplink tunnel and downlink tunnel;
Described underground Ventilator Room offers three air channels: up air-supply contact air channel, descending air-supply contact air channel and air draft contact air channel; Article three, the air channel all is horizontally through described underground Ventilator Room, and the infall of air channel and underground Ventilator Room is provided with axial flow blower;
Described air draft contact air channel one end is communicated with downlink tunnel through descending air outlet, and the middle part is communicated with uplink tunnel through up air outlet, and the other end is connected with airshaft; Described up air-supply contact air channel one end is communicated with uplink tunnel through up air outlet, and described descending air-supply contact air channel one end is communicated with downlink tunnel through descending air outlet; The other end in up air-supply contact air channel all links to each other with described airshaft with the other end in descending air-supply contact air channel.
Described airshaft is separated into two parts through dividing plate: air-supply hoistway and air draft hoistway, and wherein, the air draft hoistway links to each other with air draft contact air channel, and the air-supply hoistway links to each other with descending air-supply contact air channel with up air-supply contact air channel; The cross-sectional area of air-supply hoistway and air draft hoistway is divided according to the air quantity of air-supply and air draft in proportion.
Described up air outlet and descending air outlet are opened in the top of uplink tunnel and downlink tunnel respectively.
Preferably, described up air outlet is opened in the top of uplink tunnel, and described descending air outlet is opened in the sidepiece of downlink tunnel; Reasonable in design ingenious, can reduce corresponding engineering amount and construction costs.
Preferably, the top of described uplink tunnel and downlink tunnel is equipped with some jet blowers; Help the circulation of air in the tunnel.
Preferably, described underground Ventilator Room two ends are communicated with uplink tunnel through passway for escaping and transport passage for transporting respectively; Make things convenient for the maintainer to get into Ventilator Room and carry out service work, when emergency takes place, can in time evacuate.
Double track tunnel of the present invention can reduce the engineering quantity of ventilation system civil engineering structure through shared air draft contact air channel and airshaft, thereby reduces the corresponding engineering cost, shortens the construction period.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the profile of Fig. 1 along AA ' direction.
Fig. 3 is the profile of Fig. 1 along BB ' direction.
Fig. 4 is the profile of Fig. 1 along CC ' direction.
Fig. 5 is the profile of Fig. 1 along DD ' direction.
Fig. 6 is the profile of Fig. 1 along EE ' direction.
The specific embodiment
In order to describe the present invention more particularly, technical scheme of the present invention is elaborated below in conjunction with the accompanying drawing and the specific embodiment.
As shown in Figure 1, a kind of double track tunnel based on shared air draft contact air channel and airshaft comprises: uplink tunnel 1, downlink tunnel 2 and a underground Ventilator Room 3 of being located at uplink tunnel 1 right side;
Underground Ventilator Room 3 offers three air channels: up air-supply contact air channel 41, descending air-supply contact air channel 42 and air draft contact air channel 5; Article three, the air channel all is horizontally through underground Ventilator Room 3, and the infall of air channel (41,42,5) and underground Ventilator Room 3 is provided with axial flow blower 10;
Underground Ventilator Room 3 is an absolute construction normally, according to face of land topographic features, laterally can be arranged at uplink tunnel 1 or the downlink tunnel 2 sections outside flexibly; In this embodiment, underground Ventilator Room 3 is located at uplink tunnel 1 right side, and can not exert an influence to uplink tunnel 1 structure with underground Ventilator Room 3 Blasting Excavation with the spacing of uplink tunnel 1 is principle; Vertically should be higher than uplink tunnel 1, help reducing to get in touch with the gradient in air channel, lengthwise position can confirm that its position should make the required airflow of upstream and downstream basic identical according to required airflow result of calculation and buried depth situation.The section of underground Ventilator Room 3 requires to confirm that according to the installation dimension and the maintenance process of axial flow blower 10 adopt the stalk arch usually, clear span can adopt 8～10m; Underground Ventilator Room 3 is provided with driving usually, is used for the hoisting large-size Fan Equipment, and the absolute altitude of driving and crane beam can climb over other blower fan to space for maintenance after should satisfying a certain typhoon machine lifting; Can also arrange electric substation in the underground Ventilator Room 3.
As shown in Figure 3, air draft contact air channel 5 one ends are communicated with downlink tunnel 2 through descending air outlet 52, and the middle part is communicated with uplink tunnel 1 through up air outlet 51, and the other end is connected with airshaft 6; Wherein, airshaft 6 is separated into two parts through dividing plate 61: air-supply hoistway 63 and air draft hoistway 62, and two-part cross-sectional area is divided according to the air quantity of air-supply and air draft in proportion; The other end in air draft contact air channel 5 links to each other with air draft hoistway 62.
The contaminated air of uplink tunnel 1 or fire smoke suck from up air outlet 51, and the contaminated air of downlink tunnel 2 or fire smoke suck from descending air outlet 52, after 10 pressurizations of the axial flow blower in the underground Ventilator Room 3, send into airshaft 6 and realize discharging.Descending air outlet 52 is arranged at downlink tunnel 2 side walls, and its bottom surface is consistent with the maintaining roadway absolute altitude of downlink tunnel 2, and the section mean wind speed should be got 5～6m/s, and the air intake direction can be axially vertical with the tunnel, also can oblique; Up air outlet 51 is arranged at the vault of uplink tunnel 1, and both basal area sizes can be divided by according to exhaust air rate and section mean wind speed and be obtained, and should be greater than positive hole, tunnel basal area.
Like Fig. 2 and shown in Figure 4, up air-supply contact air channel 41 1 ends are communicated with uplink tunnel 1 through up air outlet 410, and descending air-supply contact air channel 42 1 ends are communicated with downlink tunnel 2 through descending air outlet 420; The other end in up air-supply contact air channel 41 all links to each other with the air-supply hoistway 63 of airshaft 6 with the other end in descending air-supply contact air channel 42.
New wind is blown into the uplink tunnel 1 from up air outlet 410 after axial flow blower 10 pressurizations of airshaft 6 in underground Ventilator Room 3, is blown into the downlink tunnel 2 from descending air outlet 420; Up air-supply contact air channel 41 is confirmed with air channel design wind speed scope 13m/s～18m/s that the headroom basal area in descending air-supply contact air channel 42 is pressed design air flow and code requirement.When stepping up capable tunnel 1 on the descending air-supply contact air channel 42 and going to downlink tunnel 2, need to guarantee that the clear distance of itself and uplink tunnel 1 is not less than 3.0m.For reducing the local losses of air-flow, the turning radius of air-supply contact air channel (41,42) on the plane is not less than 10m, and reduces vertical corner quantity in air channel as far as possible, avoids the warpage greater than 30 degree as far as possible.When up air-supply contact air channel 41 is connected with uplink tunnel 1, intersect the trouble in design, construction, can adopt one section rectangular cross section transition earlier for avoiding arch and arch; Simultaneously, in order to satisfy the requirement of ventilation basal area, can increase the vault section of uplink tunnel 1.
Considered is avoided short-track backflow between up air outlet 410 and up air outlet 51 and descending air outlet 420 and the descending air outlet 52, and distance must not be less than 50m.
Like Fig. 1 and shown in Figure 5, underground Ventilator Room 3 two ends are communicated with uplink tunnel 1 through passway for escaping 7 and transport passage for transporting 8 respectively; Wherein, Transport passage for transporting 8 is used for ventilation equipment and other electromechanical equipment and maintainer and passes through; Its longitudinal gradient can get 5%～12%; Its section gauge can adopt the garage's transverse passage-way gauge that requires in " highway tunnel design specifications ", and turning radius, the gradient etc. should satisfy the vehicle transport requirement, and transport passage for transporting 8 is connected with the headwall of underground Ventilator Room 3; Passway for escaping 7 is used in case of emergency evacuating the staff who just in underground Ventilator Room 3, carries out upkeep operation.Transport passage for transporting 8 intersects vertically with passway for escaping 7 and uplink tunnel 1, also can be oblique.
As shown in Figure 6, the top of uplink tunnel 1 and downlink tunnel 2 all walks abreast and is provided with some jet blowers 10; But jet blower 10 forward and backwards, its effect mainly provides the required power of boosting of tunnel ventilation, and fire time control tobacco curing air-flow to, the quantity of jet blower 10 is required to confirm by the air pressure balance of this section.
This embodiment can reduce the engineering quantity of ventilation system civil engineering structure through shared air draft contact air channel and airshaft, thereby reduces the corresponding engineering cost, shortens the construction period.This embodiment individually descends the Ventilator Room civilwork engineering quantity to reduce about 44% than tunnel, the Zhonnanshan Mountain, the Qinling Mountains; Draw together tunnel, the Cangshan than Zhejiang Province, individually descend the Ventilator Room civilwork engineering quantity to reduce about 16%.
Claims (6)
1. the double track tunnel based on shared air draft contact air channel and airshaft comprises double track tunnel and some the underground Ventilator Rooms (3) of being located at the double track tunnel outside; Described double track tunnel comprises uplink tunnel (1) and downlink tunnel (2); It is characterized in that:
Described underground Ventilator Room (3) offers three air channels: up air-supply contact air channel (41), descending air-supply contact air channel (42) and air draft contact air channel (5); Article three, the air channel all is horizontally through described underground Ventilator Room (3), and the infall of air channel and underground Ventilator Room (3) is provided with axial flow blower (10);
Described air draft contact air channel (5) one ends are communicated with downlink tunnel (2) through descending air outlet (52), and the middle part is communicated with uplink tunnel (1) through up air outlet (51), and the other end is connected with airshaft (6); Described up air-supply contact air channel (41) one ends are communicated with uplink tunnel (1) through up air outlet (410), and described descending air-supply contact air channel (42) one ends are communicated with downlink tunnel (2) through descending air outlet (420); The other end in up air-supply contact air channel (41) all links to each other with described airshaft (6) with the other end in descending air-supply contact air channel (42).
2. the double track tunnel based on shared air draft contact air channel and airshaft according to claim 1; It is characterized in that: described airshaft (6) is separated into two parts through dividing plate (61): air-supply hoistway (63) and air draft hoistway (62); Wherein, Air draft hoistway (62) links to each other with air draft contact air channel (5), and air-supply hoistway (63) links to each other with descending air-supply contact air channel (42) with up air-supply contact air channel (41); The cross-sectional area of air-supply hoistway (63) and air draft hoistway (62) is divided according to the air quantity of air-supply and air draft in proportion.
3. the double track tunnel based on shared air draft contact air channel and airshaft according to claim 1, it is characterized in that: described up air outlet (410) and descending air outlet (420) are opened in the top of uplink tunnel (1) and downlink tunnel (2) respectively.
4. the double track tunnel based on shared air draft contact air channel and airshaft according to claim 1; It is characterized in that: described up air outlet (51) is opened in the top of uplink tunnel (1), and described descending air outlet (52) is opened in the sidepiece of downlink tunnel (2).
5. the double track tunnel based on shared air draft contact air channel and airshaft according to claim 1, it is characterized in that: the top of described uplink tunnel (1) and downlink tunnel (2) is equipped with some jet blowers (9).
6. the double track tunnel based on shared air draft contact air channel and airshaft according to claim 1, it is characterized in that: described underground Ventilator Room (3) two ends are communicated with uplink tunnel (1) through passway for escaping (7) and transport passage for transporting (8) respectively.
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| CN2012100282136A CN102536293A (en) | 2012-02-09 | 2012-02-09 | Two-line tunnel based on sharing of exhaust communication air passage and ventilation vertical shaft |
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| CN2012100282136A CN102536293A (en) | 2012-02-09 | 2012-02-09 | Two-line tunnel based on sharing of exhaust communication air passage and ventilation vertical shaft |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389620A (en) * | 2014-10-28 | 2015-03-04 | 浙江工业大学 | Double-track tunnel based on reversible complementary ventilation |
| CN104390294A (en) * | 2014-10-22 | 2015-03-04 | 上海市建筑装饰工程集团有限公司 | Ventilation and cooling system and method under closed operating environment |
| CN104929672A (en) * | 2015-06-23 | 2015-09-23 | 上海市政工程设计研究总院（集团）有限公司 | Composite underground corridor fireproof isolation device and method |
| CN104948217A (en) * | 2015-07-21 | 2015-09-30 | 招商局重庆交通科研设计院有限公司 | Air duct structure for underground ventilation system overpassing main hole of tunnel |
| CN105041364A (en) * | 2015-06-23 | 2015-11-11 | 上海市政工程设计研究总院（集团）有限公司 | Fire separation device and fire separation method for composite underground ring corridor |
| CN105845018A (en) * | 2015-11-13 | 2016-08-10 | 北京交通大学 | Highway tunnel ventilation system simulation platform building method and highway tunnel ventilation system simulation platform |
| CN106088693A (en) * | 2016-08-05 | 2016-11-09 | 曙光信息产业(北京)有限公司 | Three-dimensional machine room |
| CN108915752A (en) * | 2018-08-09 | 2018-11-30 | 湖南科技大学 | Extra-long Highway Tunnel open circulation ventilation divides wind to determine method than number maximum |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104390294A (en) * | 2014-10-22 | 2015-03-04 | 上海市建筑装饰工程集团有限公司 | Ventilation and cooling system and method under closed operating environment |
| CN104390294B (en) * | 2014-10-22 | 2017-07-07 | 上海市建筑装饰工程集团有限公司 | Aeration cooling system and method under closed operation environment |
| CN104389620B (en) * | 2014-10-28 | 2016-07-20 | 浙江工业大学 | A kind of based on can contracomplementation ventilate double track tunnel |
| CN104389620A (en) * | 2014-10-28 | 2015-03-04 | 浙江工业大学 | Double-track tunnel based on reversible complementary ventilation |
| CN104929672B (en) * | 2015-06-23 | 2019-08-09 | 上海市政工程设计研究总院（集团）有限公司 | Compound underground ring corridor fire prevention isolation device and method |
| CN104929672A (en) * | 2015-06-23 | 2015-09-23 | 上海市政工程设计研究总院（集团）有限公司 | Composite underground corridor fireproof isolation device and method |
| CN105041364A (en) * | 2015-06-23 | 2015-11-11 | 上海市政工程设计研究总院（集团）有限公司 | Fire separation device and fire separation method for composite underground ring corridor |
| CN105041364B (en) * | 2015-06-23 | 2019-08-09 | 上海市政工程设计研究总院（集团）有限公司 | Compound underground ring corridor fire separation device and method |
| CN104948217A (en) * | 2015-07-21 | 2015-09-30 | 招商局重庆交通科研设计院有限公司 | Air duct structure for underground ventilation system overpassing main hole of tunnel |
| CN105845018A (en) * | 2015-11-13 | 2016-08-10 | 北京交通大学 | Highway tunnel ventilation system simulation platform building method and highway tunnel ventilation system simulation platform |
| CN106088693A (en) * | 2016-08-05 | 2016-11-09 | 曙光信息产业(北京)有限公司 | Three-dimensional machine room |
| CN108915752A (en) * | 2018-08-09 | 2018-11-30 | 湖南科技大学 | Extra-long Highway Tunnel open circulation ventilation divides wind to determine method than number maximum |
| CN108915752B (en) * | 2018-08-09 | 2019-09-17 | 湖南科技大学 | Extra-long Highway Tunnel open circulation ventilation divides wind to determine method than number maximum |
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Application publication date: 20120704 |