CN106121707B - Underwater two-tube municipal administration and highway are grown up the ventilating system and method for ventilation of shield tunnel - Google Patents
Underwater two-tube municipal administration and highway are grown up the ventilating system and method for ventilation of shield tunnel Download PDFInfo
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- CN106121707B CN106121707B CN201610685662.6A CN201610685662A CN106121707B CN 106121707 B CN106121707 B CN 106121707B CN 201610685662 A CN201610685662 A CN 201610685662A CN 106121707 B CN106121707 B CN 106121707B
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- shield
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- 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
- E21F1/003—Ventilation of traffic tunnels
Abstract
The invention belongs to municipal administration and vcehicular tunnel technical fields, it grows up the ventilating system and method for ventilation of shield tunnel more particularly to a kind of underwater two-tube municipal administration and highway, it is characterized in that, civil engineering smoke duct is provided at the top of the shield tunnel, the both ends of the shield tunnel are provided with the smoke evacuation ventilating shaft being connected with civil engineering smoke duct, are provided with smoke exhaust fan and air-valve in the smoke evacuation ventilating shaft；The middle part of the shield tunnel is longitudinally successively divided into A sections of shield, B sections of shield, C sections of shield along tunnel, described shield A sections, C sections of shield of civil engineering smoke duct area equation, the shield B sections of civil engineerings smoke duct area is the 2/5-3/5 of shield A sections of civil engineering smoke duct area, and described shield B sections and the open cut of shield tunnel both ends secretly bury section and jet blower are respectively set.Size requirement The present invention reduces ventilation scheme to shield section of growing up, reduces engineering construction difficulty and construction risk, has saved engineering-built cost.
Description
Technical field
The invention belongs to municipal administration and vcehicular tunnel technical fields, and in particular to a kind of underwater two-tube municipal administration and highway are grown up shield
The ventilating system and method for ventilation in structure tunnel.
Background technique
The selection of submerged tunnel ventilation mode, with length of tunnel, the magnitude of traffic flow, running mode, hole environmental requirement, tunnel
The many factors such as construction method are related.Currently used tunnel ventilation mode has complete lateral, half lateral, longitudinal ventilation mode and indulges
To ventilation+emphasis smoke evacuation.
Complete that special air duct and Ventilator Room need to laterally be arranged with semi-transverse ventilation mode, civil engineering costs investment is big, later period ventilation
Running cost is high, and when fire can effectively keep backlayering, but due to its air-flow provided be laterally, it is climing with flue gas in tunnel
It is vertical to prolong direction, can not effectively control flue gas and longitudinally spread along tunnel.
Longitudinal ventilation mode can give full play to traffic boosting power (Piston Action Wind) of automobile, have good to upstream flue gas control
Effect processed has good flue gas control effect for normal one-way traffic.But under traffic jam and two-direction road operating condition,
The personnel of the upstream and downstream of fire source evacuation in need and vehicle, longitudinal direction is distinguished and admirable to be full of the entire Close Tunnel in fire source downstream for fire smoke
Domain, personnel escape and fire suppression to downstream bring very big threat, thus longitudinal smoke evacuation system does not ensure that under fire source
The safety of wind direction driver and conductor.
Longitudinal ventilation+emphasis fume exhausting type is arranged civil engineering smoke duct in tunnel upper, usually carries out longitudinal ventilation, can
It is boosted power with giving full play to the traffic of automobile, emphasis smoke evacuation is carried out when fire, by opening multiple smoke outlets near fire source, just
Vehicular tunnel closely is discharged via smokejack in flue gas, reduces the influence to staff in tunnel escape to greatest extent.
Based on this, many underwater two-tube shield tunnels domestic at present all use longitudinal ventilation+point type central exhaust substantially
Scheme.Jet blower is divided to two sections of arrangements (arranging along tunnel both ends toward middle part), and civil engineering smoke duct is arranged simultaneously in shield section
And jet blower, cause shield section larger.The increase of shield section will bring engineering construction difficulty, construction risk and engineering
The increase of cost constrains application of the shield method in submerged tunnel of growing up to a certain extent.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of three sections of arrangements of jet blower point, jet blower position and soil
Build the underwater shield tunnel ventilating system and method for ventilation that smoke duct position mutually staggers.
The technical scheme adopted by the invention is as follows:
A kind of underwater two-tube municipal administration and highway are grown up the ventilating system of shield tunnel, which is characterized in that including shield tunnel,
Civil engineering smoke duct is provided at the top of the shield tunnel, the both ends of the shield tunnel are provided with and civil engineering smoke duct
Connected smoke evacuation ventilating shaft is provided with smoke exhaust fan and air-valve in the smoke evacuation ventilating shaft；The middle part of the shield tunnel is vertical along tunnel
To being successively divided into A sections of shield, B sections of shield, C sections of shield, described shield A sections, C sections of shield of civil engineering smoke duct area equation,
The shield B sections of civil engineerings smoke duct area is the 2/5-3/5 of shield A sections of civil engineering smoke duct area, described shield B sections and shield
The both ends open cut of structure tunnel secretly buries section and jet blower is respectively set.
The more excellent area of the shield B sections of civil engineering smoke ducts is the 1/2 of shield A sections of civil engineering smoke duct area.
It is mutually staggered positioned at described shield B sections of jet blower positions and civil engineering smoke duct position, described shield B sections
Have on jet blower and C sections of A sections of shield, shield civil engineering smoke duct cross section projections overlapping.
A kind of underwater two-tube municipal administration and highway are grown up the method for ventilation of shield tunnel, comprising the following steps:
(1) longitudinal induced draught is carried out by setting jet blower to the shield tunnel；
(2) by the civil engineering smoke duct being arranged in the shield tunnel, and be connected with the civil engineering smoke duct
The smoke evacuation of shield tunnel both ends ventilating shaft, smoke exhaust fan, air-valve carry out emphasis smoke evacuation when fire；
(3) the shield section of the shield tunnel is longitudinal whole equipped with mutually independent civil engineering smoke duct and vertical along tunnel
To being divided into three sections；Three sections of civil engineering smoke duct area is unequal, when C sections of generation fire of A sections of shield or shield, selects from fire
The closer jet blower in source carries out single-ended smoke evacuation；When B sections of generation fire of shield, the jet blower at shield tunnel both ends simultaneously into
Row smoke evacuation.
The invention has the benefit that
1, submerged tunnel draft type of the invention is simple, on conventional longitudinal ventilation+emphasis smoke-discharging and ventilating mode basis
On, the method mutually staggered by three sections of arrangements of jet blower point, jet blower position and civil engineering smoke duct position both guaranteed
The functional effect of ventilation and smoke evacuation, and reduce the size requirement to shield section, reduce engineering construction difficulty and construction
Risk has saved engineering-built cost；
2, the present invention is suitable for underwater two-tube municipal administration and highway shield tunnel, and there are open cuts secretly to bury section at tunnel both ends.
Detailed description of the invention
Fig. 1: Tunnel Ventilation System arrangement schematic diagram；
Fig. 2: Tunnel Ventilation System fire working discharges fume schematic diagram (fire is located at A sections or C sections of shield)；
Fig. 3: Tunnel Ventilation System fire working discharges fume schematic diagram (fire is located at B sections of shield)；
Fig. 4-Fig. 5: A sections of shield, C sections of schematic cross-sectional views of shield (shield Blower-free section)；
Fig. 6-Fig. 7: B sections of schematic cross-sectional views of shield (shield has fan section).
Specific embodiment
In Fig. 1-7,1- jet blower, 2- discharges fume ventilating shaft, 3- runway, 4- civil engineering smoke duct, 5- smoke exhaust fan and wind
Valve, 6- shield tunnel, A sections of 7- shield, B sections of 8- shield, C sections of 9- shield, section is secretly buried in 10- open cut, and the evacuation of the tunnel 11- lower layer is logical
Road, the tunnel 12- bottom structure line, 13- airflow direction, 14- fire point, the tunnel 15- roof construction line.
Embodiment
A kind of underwater two-tube municipal administration and highway are grown up the ventilating system of shield tunnel, including shield tunnel 6, shield tunnel 6
Top be provided with civil engineering smoke duct 4, the both ends of shield tunnel 6 are provided with the Smoke being connected with civil engineering smoke duct 4
Well 2, discharge fume ventilating shaft 2 in be provided with smoke exhaust fan and air-valve 5；The middle part of shield tunnel 6 is longitudinally successively divided into A sections of shield along tunnel
7, shield B section 8, shield C section 9,4 area equation of civil engineering smoke duct of shield A section 7, shield C section 9, the civil engineering row of shield B section 8
4 area of cigarette air duct is the 2/5-3/5 of 4 area of civil engineering smoke duct of shield A section 7, the 6 both ends open cut of shield B section 8 and shield tunnel
It secretly buries section 10 and jet blower 1 is respectively set.
The more excellent area of the civil engineering smoke duct 4 of shield B section 8 is the 1/2 of 4 area of civil engineering smoke duct of shield A section 7.
1 position of jet blower positioned at shield B section 8 is mutually staggered with 4 position of civil engineering smoke duct, the jet stream of shield B section 8
Have on blower 1 and shield A section 7, the projection of 9 civil engineering smoke duct of shield C section, 4 cross section overlapping.
A kind of underwater two-tube municipal administration and highway are grown up the method for ventilation of shield tunnel, comprising the following steps:
(1) longitudinal induced draught is carried out by the way that jet blower 1 is arranged to shield tunnel 6；
(2) pass through the civil engineering smoke duct 4 being arranged in shield tunnel 6, and the shield being connected with the civil engineering smoke duct 4
6 both ends of structure tunnel smoke evacuation ventilating shaft 2, smoke exhaust fan and air-valve 5 carry out emphasis smoke evacuation when fire；
(3) shield section is longitudinal whole equipped with mutually independent civil engineering smoke duct 4, and is divided longitudinally into three along shield tunnel 6
Section；Three sections of 4 area of civil engineering smoke duct is unequal, when fire occurs for shield A section 7 or shield C section 9, select from fire source compared with
Close jet blower 1 carries out single-ended smoke evacuation；When B8 sections of generation fire of shield, the jet blower 1 at 6 both ends of shield tunnel simultaneously into
Row smoke evacuation.
Below by conjunction with attached drawing, the present invention is described further.
The invention discloses a kind of jet blowers 1 to divide three sections of arrangements, 4 position of 1 position of jet blower and civil engineering smoke duct
Underwater two-tube grow up shield tunnel ventilating system and the method for ventilation (being detailed in Fig. 1) mutually staggered, is specifically described as follows:
1) it to underwater two-tube shield tunnel of growing up, in every pipe tunnel runway 3, is indulged by the way that jet blower 1 is arranged
To induced draught, direction of ventilation is consistent with garage direction, is aerated ventilation by vehicle Piston Action Wind when nominal situation, when obstruction
It opens jet blower 1 and is aerated ventilation.
2) to underwater two-tube shield tunnel of growing up, in every pipe tunnel runway 3, by being arranged in shield tunnel 6
Civil engineering smoke duct 4, and the tunnel both ends smoke evacuation ventilating shaft 2, smoke exhaust fan and the air-valve 5 that are connected with the civil engineering smoke duct 4 etc.
Component carries out emphasis smoke evacuation when fire.
3) two-tube shield section runway is longitudinal whole equipped with mutually independent civil engineering smoke duct 4, and longitudinally divides along tunnel
At three sections (shield A section 6, shield B section 7, shield C sections 8).When fire occurs for shield A section 6 or shield C section 9, select from fire source
Closer jet blower 1 carries out single-ended smoke evacuation (being detailed in Fig. 2)；When fire occurs for shield B section 8, the jet blower 1 at tunnel both ends
It is discharged fume simultaneously and (is detailed in Fig. 3).So three sections of 4 area of civil engineering smoke duct is designed as unequal, 7 He of shield A section
Shield C section 9 is designed by required 4 area S of normal civil engineering smoke duct and (is detailed in Fig. 4), B sections of civil engineering smoke ducts 4 of shield
Area is designed by about S/2.
4) selection of position is set about jet blower 1, and in order to reduce shield section, jet blower 1 divides three sections of arrangements, cloth
Seated position correspond to shield B sections of 8(be detailed in Fig. 5) and the open cut of tunnel both ends secretly bury section 10.Wherein it is located at the jet stream wind of shield B section 6
Have on machine 1 and shield A section 7 and the projection of 9 civil engineering smoke duct of shield C section, 4 cross section overlapping.
Jet blower 1 is respectively set in shield B section 8 and 6 both ends open excavation section of shield tunnel, in shield A section 7 and shield C section 9
It is not provided with jet blower 1.Since position phase is arranged with the civil engineering smoke duct 4 of normal size in the setting position of jet blower 1
It is mutually staggered, reducing the size requirement to shield section reduces engineering construction difficulty with can reach the mesh for reducing shield diameter
And construction risk, save engineering-built cost.
This method of ventilation is suitable for underwater two-tube municipal administration and highway shield tunnel, and there are open cuts secretly to bury section at tunnel both ends.
The part that the present invention carries out is changed in two-tube grow up shield tunnel ventilation form and details, without departing from this hair
Bright claims limited range.
1 embodiment of the invention is described in detail above, but content is only presently preferred embodiments of the present invention, no
It can be believed to be used to limit the scope of the invention.Any changes and modifications in accordance with the scope of the present application,
It should still fall within the scope of the patent of the present invention.
Claims (2)
- The ventilating system of shield tunnel 1. a kind of underwater two-tube municipal administration and highway are grown up, which is characterized in that including shield tunnel, institute It states and is provided with civil engineering smoke duct at the top of shield tunnel, the both ends of the shield tunnel are provided with and civil engineering smoke duct phase Smoke evacuation ventilating shaft even is provided with smoke exhaust fan and air-valve in the smoke evacuation ventilating shaft；The middle part of the shield tunnel is along tunnel longitudinal direction Successively it is divided into shield Blower-free section A, shield has fan section B, shield Blower-free section C, shield Blower-free section A, shield Blower-free section C Civil engineering smoke duct area equation, shield have fan section B civil engineering smoke duct area be shield Blower-free section A civil engineering Smoke The 2/5-3/5 of road area, shield have fan section B and the open cut of shield tunnel both ends secretly to bury section jet blower is respectively set, and are located at shield Structure has the jet blower position of fan section B to mutually stagger with civil engineering smoke duct position, shield have the jet blower of fan section B with There is overlapping on shield Blower-free section A, the projection of the shield Blower-free civil engineering smoke duct cross section section C；When ventilation the following steps are included:(1) longitudinal induced draught is carried out by setting jet blower to the shield tunnel；(2) pass through the civil engineering smoke duct being arranged in the shield tunnel, and the shield being connected with the civil engineering smoke duct The smoke evacuation of tunnel both ends ventilating shaft, smoke exhaust fan, air-valve carry out emphasis smoke evacuation when fire；(3) the shield section of the shield tunnel is longitudinal whole equipped with mutually independent civil engineering smoke duct, and longitudinally divides along tunnel At three sections；Three sections of civil engineering smoke duct area is unequal, when fire occurs for shield Blower-free section A or shield Blower-free section C, It selects to carry out single-ended smoke evacuation from the closer jet blower of fire source；When shield has fan section B that fire occurs, shield tunnel both ends Jet blower is discharged fume simultaneously.
- The ventilating system of shield tunnel 2. a kind of underwater two-tube municipal administration according to claim 1 and highway are grown up, feature It is, the area that shield has fan section B civil engineering smoke duct is the 1/2 of shield Blower-free section A civil engineering smoke duct area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685662.6A CN106121707B (en) | 2016-08-19 | 2016-08-19 | Underwater two-tube municipal administration and highway are grown up the ventilating system and method for ventilation of shield tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685662.6A CN106121707B (en) | 2016-08-19 | 2016-08-19 | Underwater two-tube municipal administration and highway are grown up the ventilating system and method for ventilation of shield tunnel |
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| Publication Number | Publication Date |
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| CN106121707A CN106121707A (en) | 2016-11-16 |
| CN106121707B true CN106121707B (en) | 2019-04-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110714795B (en) * | 2019-10-17 | 2021-02-26 | 聊城大学 | Ventilation device for underwater suspension tunnel |
| CN111720151B (en) * | 2020-06-10 | 2021-10-22 | 中铁第五勘察设计院集团有限公司 | Tunnel structure with rectangular cross section |
| CN113530590A (en) * | 2021-07-30 | 2021-10-22 | 中铁第四勘察设计院集团有限公司 | Double-hole one-way long and large underwater highway tunnel ventilation system and ventilation method thereof |
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Effective date of registration: 20190211 Address after: 300000 Tianjin Free Trade Test Zone (Airport Economic Zone) No. 36 West Central Road Applicant after: CHINA RAILWAY LIUYUAN GROUP CO., LTD. Address before: 300000 Hongqiao District, Tianjin City, Bridge South East Road Applicant before: Zhongtie Tunnel Survey and Design Inst., Ltd. |
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