CN101550838B - Centralized waste gas discharging method used in longitudinally ventilated road tunnel - Google Patents
Centralized waste gas discharging method used in longitudinally ventilated road tunnel Download PDFInfo
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- CN101550838B CN101550838B CN 200910050827 CN200910050827A CN101550838B CN 101550838 B CN101550838 B CN 101550838B CN 200910050827 CN200910050827 CN 200910050827 CN 200910050827 A CN200910050827 A CN 200910050827A CN 101550838 B CN101550838 B CN 101550838B
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Abstract
The invention relates to a centralized waste gas discharging method used in longitudinally ventilated road tunnel, which belongs to the road tunnel ventilation and fire-fighting field. The road tunnelcomprises an upward tunnel an a downward tunnel; The method comprises: disposing a pass-by duct on each tunnel near the tunnel portal to cause the airflow in one tunnel along the freight flow directi on to flow into another tunnel through the pass-by duct; and arranging at least one centralized air-discharging well respectively inside the upward tunnel and the downward tunnel. The invention has the following advantages: solves the problem of addressing centralized air-discharge well in road tunnel, especially city tunnel; expands addressing range, develops tunnel ventilating and exhausting manners, and improves the tunnel construction feasibility of the section difficult for building wind well.
Description
Technical field
The present invention relates to highway tunnel ventilation fire-fighting class, specifically relate to a kind of method that is used for the concentrated discharging waste gas of longitudinal ventilation highway tunnel.
Background technology
In highway tunnel, the vehicle that travels is discharging harmful exhaust and flue dust constantly, because the automobile exhaust that certain-length has been concentrated in the tunnel, when tunnel portal had the resident, tunnel waste gas did not allow to concentrate discharging at portals.Therefore, city tunnel is provided with waste gas and concentrates the discharging ventilating shaft going out portals, makes the most waste gas in tunnel concentrate discharging by ventilating shaft, reduces the influence near the environment portals.
Go out in the addressing of cave section air draft well in the tunnel, particularly in the city, often be subjected to various condition restriction, as view, resident come down hard upon, various reasons such as planning, be difficult to choose suitable well location.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art part, a kind of method that is used for the concentrated discharging waste gas of longitudinal ventilation highway tunnel is provided, this method is used for diplopore one way traffic highway tunnel, make tunnel air form desirable air-flow circulation by circuitous air channel and jet blower are set in the tunnel, and the integrated air exhaust well is set in the air-flow circulation route carries out exhaust gas discharging.
The object of the invention realizes being finished by following technical scheme:
A kind of method that is used for the concentrated discharging waste gas of longitudinal ventilation highway tunnel, described highway tunnel comprises uplink tunnel and downlink tunnel, it is characterized in that: this method is being provided with circuitous air channel near described uplink tunnel and downlink tunnel portals place respectively, make the tunnel air communication that flows along the wagon flow direction cross described circuitous air channel and be back to the offside tunnel, and be respectively provided to few integrated air exhaust well at described uplink tunnel and downlink tunnel inside.
And the pressure regulation jet blower is set by go out the portals place in the tunnel, make that air forms the air-flow circulation in the tunnel.
The above integrated air exhaust well and, the symmetrical distribution even of described concentrated new ventilating shaft along air-flow circulation route in the tunnel.
Advantage of the present invention: solve highway tunnel, particularly city tunnel integrated air exhaust well addressing problem of difficult, expanded wind and advanced the addressing scope, expanded the tunnel ventilation exhaust mode, improve the feasibility that ventilating shaft is provided with difficult location tunnel construction.
Description of drawings
Accompanying drawing 1 is an embodiment of the invention principle schematic.
The specific embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As shown in Figure 1, label 1-12 represents respectively: air-flow circulation route 12 in uplink tunnel 1, downlink tunnel 2, circuitous air channel 3, jet blower 4, integrated air exhaust well 5, concentrated new ventilating shaft 6, blower fan 7, uplink tunnel outlet 8, uplink tunnel inlet 9, downlink tunnel outlet 10, downlink tunnel inlet 11, the tunnel.
As shown in Figure 1, diplopore one way traffic highway tunnel comprises uplink tunnel 1 and downlink tunnel 2.Between uplink tunnel 1 and downlink tunnel 2, circuitous air channel 3 is set respectively during constructing tunnel, promptly between uplink tunnel outlet 8 and downlink tunnel inlet 11, offers circuitous air channel 3 specifically near the position of two portals; Between uplink tunnel inlet 9 and downlink tunnel outlet 10, offer circuitous air channel 3.
An integrated air exhaust well 5 is set respectively in the stage casing of uplink tunnel 1 and downlink tunnel 2 afterwards and concentrates new ventilating shaft 6.Integrated air exhaust well 5 concentrates new ventilating shaft 6 to carry fresh air by blower fan 7 machineries that are arranged on wherein by being arranged on blower fan 7 mechanical discharging waste gas wherein.For reducing cost, concentrate new ventilating shaft 6 and integrated air exhaust well 5 can be arranged in the well, i.e. the two next-door neighbour, the parallel setting.Simultaneously, for avoiding concentrating new ventilating shaft 6 directly to suck 5 discharging waste gas of integrated air exhaust well, when two ventilating shafts were built together, following, the discrepancy in elevation was not less than 5m to air outlet at last fresh wind port, and tries one's best away from the well head of integrated air exhaust well 5 under the situation of conditions permit.
Export 8 places at uplink tunnel at last one group of jet blower 4 is set, downlink tunnel exports 10 places one group of jet blower 4 is set.Jet blower 4 air blast in the tunnel under the normal state that ventilates.
In the tunnel operation, air flows to up tunnel exit 8 directions under the piston action of wagon flow in the uplink tunnel 1.Export 8 places at uplink tunnel afterwards and be subjected to jet blower 4 effects, prolong circuitous air channel 3 afterwards and be back in the downlink tunnel 2 of offside, and under the piston action of vehicle, flow to descending tunnel exit 10.In brief, under the effect in jet blower 4 and circuitous air channel 3, tunnel air constitutes a complete air-flow circulation in diplopore one way traffic highway tunnel.
For reaching the effect of good circulation, the width in circuitous air channel 3 and the power of jet blower 4 should be selected according to parameters such as the gradient in the spacing between uplink tunnel 1 and the downlink tunnel 2, tunnel vehicle density, tunnel, tunnel natural ventilation situations.The position in circuitous air channel 3 is by the about 100m of the portals that is positioned at nearly tunnel as far as possible ~ 200m scope, to guarantee the efficient of air-flow circulation in the tunnel.
Shown in air-flow circulation route 12 in the tunnel among Fig. 1, air exports 8 places at uplink tunnel and is subjected to jet blower 4 effects in the uplink tunnel 1, prolonging circuitous air channel 3 afterwards is back in the downlink tunnel 2 of offside, continuation is discharged along the integrated air exhaust well 5 that wagon flow in the downlink tunnel 2 walks to downlink tunnel 2 middle parts, sends into fresh air at this place by concentrated new ventilating shaft 6 machineries simultaneously; The fresh air of sending into exports 10 places along wagon flow piston action current downflow to downlink tunnel, returns uplink tunnel 1 in the effect of this place's jet blower 4 by circuitous air channel 3, so circulation.
, can increase integrated air exhaust well 5 and concentrate new ventilating shaft 6 quantity to reach the effect of normal discharging waste gas when long in the tunnel, the principle of air circulation, smoke evacuation is identical in its tunnel.
Though below design and embodiment according to the object of the invention are described in detail with reference to accompanying drawing, but those of ordinary skills can recognize, under the precondition that does not break away from the claim limited range, still can make various improvement and conversion to the present invention.
Because tunnel air circulates, so integrated air exhaust well 5 is offered and new ventilating shaft 6 can play discharging waste gas and replenish new wind action in the arbitrfary point in the circulation of above-mentioned air-flow.So only need along air-flow circulation route in the tunnel evenly, be symmetrical arranged the effect that integrated air exhaust well 5 and new ventilating shaft 6 can reach good discharging waste gas, expanded wind greatly and advanced the scope of addressing.
Claims (2)
1. method that is used for the concentrated discharging waste gas of longitudinal ventilation highway tunnel, described highway tunnel comprises uplink tunnel and downlink tunnel, it is characterized in that: this method is being provided with circuitous air channel near described uplink tunnel and downlink tunnel portals place respectively, make the tunnel air communication that flows along the wagon flow direction cross described circuitous air channel and be back to the offside tunnel, and be respectively provided to few integrated air exhaust well in described uplink tunnel and downlink tunnel inside, described integrated air exhaust Jing Chu is provided with and concentrates new ventilating shaft, described integrated air exhaust well and described concentrated new ventilating shaft are even along air-flow circulation route in the tunnel, be symmetrically distributed, go out the portals place in the tunnel pressure regulation jet blower is set, make air formation air-flow circulation in the tunnel.
2. a kind of method that is used for the concentrated discharging waste gas of longitudinal ventilation highway tunnel according to claim 1 is characterized in that described integrated air exhaust well location is in the middle part of described uplink tunnel and downlink tunnel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910050827 CN101550838B (en) | 2009-05-08 | 2009-05-08 | Centralized waste gas discharging method used in longitudinally ventilated road tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910050827 CN101550838B (en) | 2009-05-08 | 2009-05-08 | Centralized waste gas discharging method used in longitudinally ventilated road tunnel |
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| CN101550838A CN101550838A (en) | 2009-10-07 |
| CN101550838B true CN101550838B (en) | 2011-06-08 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305095B (en) * | 2011-08-01 | 2013-10-23 | 湖南省交通规划勘察设计院 | Flat guide ventilation operation system of extra-long deeply-buried road tunnel |
| CN102514999A (en) * | 2011-12-15 | 2012-06-27 | 天津恩泽人预防医学工程研究中心 | Lift car capable of automatically exhausting air downwardly in running process and ventilating method thereof |
| CN102619545A (en) * | 2011-12-23 | 2012-08-01 | 天津市建筑设计院 | Lower exhaust system and method for tunnel air |
| CN104420879B (en) * | 2013-08-27 | 2019-01-15 | 上海市政工程设计研究总院（集团）有限公司 | A kind of tunnel forced ventilation cooling device and cool-down method |
| 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 |
| CN108999628B (en) * | 2018-08-09 | 2019-10-25 | 湖南科技大学 | The critical effective wind rate determination method of the deduster of the vcehicular tunnel closed system of ventilation |
| CN113137264A (en) * | 2021-06-03 | 2021-07-20 | 上海市城市建设设计研究总院（集团）有限公司 | Urban tunnel exhaust system without wind tower |
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