CN106168140B - Underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system and method - Google Patents
Underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system and method Download PDFInfo
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- CN106168140B CN106168140B CN201610685714.XA CN201610685714A CN106168140B CN 106168140 B CN106168140 B CN 106168140B CN 201610685714 A CN201610685714 A CN 201610685714A CN 106168140 B CN106168140 B CN 106168140B
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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 shield tunnel ventilating system and method more particularly to a kind of underwater single tube upper and lower level municipal administration and highway, it is characterized in that, the shield tunnel is internally provided with upper layer lane, flyunder, civil engineering smoke duct is provided at the top of the upper layer lane, flyunder, the both ends of the shield tunnel are provided with the smoke evacuation ventilating shaft being connected with the civil engineering smoke duct of upper layer lane, flyunder；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 of the ventilation scheme to shield section, 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 single tube upper and lower level municipal administration and highway
It grows up shield tunnel ventilating system and method.
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 single tube upper and lower level shield tunnels domestic at present all use longitudinal ventilation+point type collection substantially
The scheme of middle smoke evacuation.Jet blower is divided to two sections of arrangements (arranging along tunnel both ends toward middle part), and civil engineering row is arranged simultaneously in shield section
Cigarette air duct and jet blower cause shield section larger.The increase of shield section will bring engineering construction difficulty, construction risk
With the increase of project cost, application of the shield method in submerged tunnel of growing up is constrained 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
It builds underwater single tube upper and lower level municipal administration that smoke duct position mutually staggers and highway is grown up shield tunnel ventilating system and method.
The technical scheme adopted by the invention is as follows:
A kind of underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system, which is characterized in that including shield
Tunnel, the shield tunnel are internally provided with upper layer lane, flyunder, the top setting in the upper layer lane, flyunder
There is civil engineering smoke duct, the both ends of the shield tunnel are provided with equal with the civil engineering smoke duct of upper layer lane, flyunder
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, but cross-section in tunnel
There is overlapping in the projection of face.
A kind of underwater two-tube municipal administration and highway are grown up the method for ventilation of shield tunnel, which comprises the following steps:
(1) longitudinal induced draught is carried out by setting jet blower to the upper layer lane of the shield tunnel, flyunder；
(2) the civil engineering smoke duct that is arranged in shield tunnel passed through to the upper layer lane, flyunder, and with this
Civil engineering the smoke duct connected smoke evacuation of shield tunnel both ends ventilating shaft, smoke exhaust fan, air-valve, carry out emphasis smoke evacuation when fire；
(3) the upper layer lane of the shield tunnel, the longitudinal whole process of flyunder are equipped with mutually independent civil engineering smoke duct,
And three sections are divided longitudinally into along tunnel；Three sections of civil engineering smoke duct area is unequal, when C sections of generation fire of A sections of shield or shield
When, it selects to carry out single-ended smoke evacuation from the closer jet blower of fire source；When B sections of generation fire of shield, shield tunnel both ends are penetrated
Flow fan is discharged fume simultaneously.
The invention has the benefit that
Underwater single tube upper and lower level tunnel ventilation method of the invention is simple, in conventional longitudinal ventilation+emphasis smoke-discharging and ventilating side
On the basis of formula, arranged by three sections of jet blower point, the side that jet blower position and civil engineering smoke duct position mutually stagger
Method, not only ensure that the functional effect of ventilation and smoke evacuation, but also reduce the size requirement to shield section, reduce engineering construction hardly possible
Degree and construction risk, have saved engineering-built cost.
Detailed description of the invention
Fig. 1: single tube upper and lower level Tunnel Ventilation System arrangement schematic diagram；
Fig. 2: single tube upper and lower level Tunnel Ventilation System fire working discharges fume schematic diagram (fire is located at A sections or C sections of shield)；
Fig. 3: single tube upper and lower level Tunnel Ventilation System fire working discharges fume schematic diagram (fire is located at B sections of shield)；
Fig. 4: A sections of single tube upper and lower level shield, C sections of schematic cross-sectional views of shield (shield Blower-free section)；
Fig. 5: B sections of schematic cross-sectional views of single tube upper and lower level shield (shield has fan section).
Specific embodiment
In Fig. 1-5,1- jet blower, 2- discharge fume ventilating shaft, the upper layer 3- lane, 4- civil engineering smoke duct, 5- smoke exhaust fan and
Air-valve, 6- flyunder, A sections of 7- shield, B sections of 8- shield, C sections of 9- shield, section is secretly buried in 10- open cut, the tunnel 11- roof construction line,
The tunnel 12- bottom structure line, 13- airflow direction, 14- fire point, 15- shield tunnel.
Embodiment
A kind of underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system, including shield tunnel 15, shield
Tunnel 15 is internally provided with upper layer lane 3, flyunder 6, upper layer lane 3, flyunder 6 top be provided with civil engineering Smoke
Road 4, the both ends of shield tunnel 15 are provided with the smoke evacuation being connected with the civil engineering smoke duct 4 of upper layer lane 3, flyunder 6
Ventilating shaft 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 shield A along tunnel
Section 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 of shield B section 8
4 area of smoke duct is the 2/5-3/5 of the civil engineering smoke duct area of shield A section 7, and shield B section 8 and 15 both ends of shield tunnel are bright
Digging secretly buries section 10 and jet blower 1 is respectively set.
The more excellent area of 8 civil engineering smoke duct 4 of shield B section is the 1/2 of 7 civil engineering smoke duct of shield A section, 4 area.
1 position of jet blower positioned at shield B section 8 is mutually staggered with 4 position of civil engineering smoke duct, but in tunnel cross section
There is overlapping in projection.
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 induce is carried out by setting jet blower 1 to the upper layer lane 3 of shield tunnel 15, flyunder 6 to lead to
Wind；
(2) the civil engineering smoke duct 4, Yi Jiyu being arranged in shield tunnel 15 is passed through to upper layer lane 3, flyunder 6
The civil engineering smoke duct 4 connected 15 both ends of shield tunnel smoke evacuation ventilating shaft 2, smoke exhaust fan and air-valve 5, carry out emphasis when fire
Smoke evacuation；
(3) the upper layer lane 3 of shield tunnel 15, flyunder 6 are longitudinal whole equipped with mutually independent civil engineering smoke duct
4, and three sections are divided longitudinally into along tunnel；Three sections of 4 area of civil engineering smoke duct is unequal, when shield A section 7 or shield C section 9 occur
When fire, select to carry out single-ended smoke evacuation from the closer jet blower 1 of fire source；When fire occurs for shield B section 8, shield tunnel 15
The jet blower 1 at both ends is discharged fume simultaneously.
Below by conjunction with attached drawing, the present invention is described further.
The invention discloses a kind of ventilating systems of underwater single tube upper and lower level large diameter shield tunnel and method of ventilation (to be detailed in
Fig. 1).It mainly comprises the steps that
1) the upper layer lane 3 to underwater single tube shield tunnel and flyunder 6 are carried out by setting jet stream smoke exhaust fan 1
Longitudinal induced draught, direction of ventilation is consistent with garage direction, is aerated ventilation by vehicle Piston Action Wind when nominal situation, blocks
Shi Kaiqi jet blower is aerated ventilation.
2) the upper layer lane 3 to underwater single tube shield tunnel and flyunder 6, pass through the soil being arranged in shield tunnel 15
Smoke duct 4 is built, and the groups such as tunnel both ends smoke evacuation ventilating shaft 2, smoke exhaust fan and air-valve 5 being connected with the civil engineering smoke duct 4
Part carries out emphasis smoke evacuation when fire.
3) the upper layer lane 3 of shield section and flyunder 6 are longitudinal whole equipped with mutually independent smoke duct 4, and along tunnel
Road is divided longitudinally into three sections (shield A section 7, shield B section 8, shield C sections 9).When fire occurs for shield A section 7 or shield C section 9, choosing
It selects and carries out single-ended smoke evacuation (being detailed in Fig. 2) from the closer jet stream smoke exhaust fan 1 of fire source；When fire occurs for shield B section 8, tunnel two
The jet stream smoke exhaust fan 1 at end is discharged fume simultaneously and (is detailed in Fig. 3).So three sections of civil engineering air duct area 4 is set as unequal
Meter, shield A section 7 and shield C section 9 are designed by required normal smoke duct area S and (are detailed in Fig. 4), and shield B section 8 is discharged fume
Air duct area is designed by about S/2.
4) selection of position is set about jet stream smoke exhaust fan 1, and in order to reduce shield section, jet blower 1 divides three sections of cloth
Set, 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 penetrating positioned at shield B section 8
1 position of flow fan is mutually staggered with 4 position of civil engineering exit flue, but 1 position of jet blower and shield A section 7 or shield C section 9
There is overlapping in 4 position of civil engineering smoke duct in tunnel cross section projection.In order to reduce by the influence of 1 couple of jet blower evacuation crowd,
It for the jet blower 1 of shield section flyunder 6, can not be arranged symmetrically, and be to try to far from fire escape by tunnel center line
Side.
Jet blower 1 is respectively set in shield B section 8 and 15 both ends open excavation section 10 of shield tunnel, in shield A section 7 and shield
C9 sections are not provided with jet blower 1.Since position is arranged with the civil engineering smoke duct 4 of normal size in the setting position of jet blower 1
It sets and mutually staggers, reducing the size requirement to shield section reduces engineering construction with can reach the mesh for reducing shield diameter
Difficulty and construction risk have saved engineering-built cost.
Single tube upper and lower level grows up shield tunnel ventilation in form and details to the part change of the invention carried out under water, and
Without departing from claims of the present invention 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 shield tunnel ventilating system 1. a kind of underwater single tube upper and lower level municipal administration and highway are grown up, which is characterized in that including shield tunnel Road, the shield tunnel are internally provided with upper layer lane, flyunder, are provided at the top of the upper layer lane, flyunder Civil engineering smoke duct, the both ends of the shield tunnel are provided with homogeneous with the civil engineering smoke duct of upper layer lane, flyunder 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, but has weight in tunnel cross section projection It is folded；When ventilation the following steps are included:(1) longitudinal induced draught is carried out by setting jet blower to the upper layer lane of the shield tunnel, flyunder；(2) the civil engineering smoke duct that is arranged in shield tunnel passed through to the upper layer lane, flyunder, and with the civil engineering The smoke duct connected smoke evacuation of shield tunnel both ends ventilating shaft, smoke exhaust fan, air-valve, carry out emphasis smoke evacuation when fire；(3) the upper layer lane of the shield tunnel, the longitudinal whole process of flyunder are equipped with mutually independent civil engineering smoke duct, and edge Tunnel is divided longitudinally into three sections；Three sections of civil engineering smoke duct area is unequal, as shield Blower-free section A or shield Blower-free section C When fire occurs, select 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 The jet blower at structure tunnel both ends is discharged fume simultaneously.
- The shield tunnel ventilating system 2. a kind of underwater single tube upper and lower level municipal administration according to claim 1 and highway are grown up, It is characterized in that, 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 |
|---|---|---|---|
| CN201610685714.XA CN106168140B (en) | 2016-08-19 | 2016-08-19 | Underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610685714.XA CN106168140B (en) | 2016-08-19 | 2016-08-19 | Underwater single tube upper and lower level municipal administration and highway are grown up shield tunnel ventilating system and method |
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| Publication Number | Publication Date |
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| CN106168140A CN106168140A (en) | 2016-11-30 |
| CN106168140B true CN106168140B (en) | 2019-04-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111894647A (en) * | 2020-07-14 | 2020-11-06 | 中铁第六勘察设计院集团有限公司 | Ventilation method without air shaft in large shield subway station range |
| CN112177657B (en) * | 2020-08-14 | 2022-07-22 | 中铁十六局集团铁运工程有限公司 | Sectional type ventilation system for long-distance tunnel and implementation method thereof |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865662A (en) * | 2006-06-20 | 2006-11-22 | 浙江省交通规划设计研究院 | Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device |
| DE102007040237A1 (en) * | 2007-08-25 | 2009-02-26 | Horst-Dieter Dipl.-Ing. Rector | Air extraction system for active combating of fire in traffic tunnel creates oppositely-directed airflows from both directions after outbreak of fire and directs these to source of fire or smoke at calculated speed |
| CN101509392A (en) * | 2009-03-13 | 2009-08-19 | 上海市隧道工程轨道交通设计研究院 | Highway tunnel exhaust port opening method |
| CN201407052Y (en) * | 2009-05-15 | 2010-02-17 | 中铁第四勘察设计院集团有限公司 | Dual-layer shield tunnel |
| CN202081896U (en) * | 2011-06-01 | 2011-12-21 | 上海磁浮交通发展有限公司 | Internal space arranging structure for magnetic levitation tunnel |
| CN202170803U (en) * | 2011-08-01 | 2012-03-21 | 湖南省交通规划勘察设计院 | Very long, deep-buried highway tunnel parallel adit ventilation operation system |
| CN103939124A (en) * | 2014-05-13 | 2014-07-23 | 武汉中交交通工程有限责任公司 | Ventilation, smoke discharge and evacuation system for underwater single-tube double-layer shield traffic tunnel |
| CN205895293U (en) * | 2016-08-19 | 2017-01-18 | 中铁隧道勘测设计院有限公司 | Lower floor's municipal administration and highway shield tunnel ventilation system that grows up is attend to single tube under water |
-
2016
- 2016-08-19 CN CN201610685714.XA patent/CN106168140B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1865662A (en) * | 2006-06-20 | 2006-11-22 | 浙江省交通规划设计研究院 | Smoke emission method in tunnel and tunnel ventilation system with separate smoke-emission device |
| DE102007040237A1 (en) * | 2007-08-25 | 2009-02-26 | Horst-Dieter Dipl.-Ing. Rector | Air extraction system for active combating of fire in traffic tunnel creates oppositely-directed airflows from both directions after outbreak of fire and directs these to source of fire or smoke at calculated speed |
| CN101509392A (en) * | 2009-03-13 | 2009-08-19 | 上海市隧道工程轨道交通设计研究院 | Highway tunnel exhaust port opening method |
| CN201407052Y (en) * | 2009-05-15 | 2010-02-17 | 中铁第四勘察设计院集团有限公司 | Dual-layer shield tunnel |
| CN202081896U (en) * | 2011-06-01 | 2011-12-21 | 上海磁浮交通发展有限公司 | Internal space arranging structure for magnetic levitation tunnel |
| CN202170803U (en) * | 2011-08-01 | 2012-03-21 | 湖南省交通规划勘察设计院 | Very long, deep-buried highway tunnel parallel adit ventilation operation system |
| CN103939124A (en) * | 2014-05-13 | 2014-07-23 | 武汉中交交通工程有限责任公司 | Ventilation, smoke discharge and evacuation system for underwater single-tube double-layer shield traffic tunnel |
| CN205895293U (en) * | 2016-08-19 | 2017-01-18 | 中铁隧道勘测设计院有限公司 | Lower floor's municipal administration and highway shield tunnel ventilation system that grows up is attend to single tube under water |
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| Publication number | Publication date |
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| CN106168140A (en) | 2016-11-30 |
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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 Hebei Avenue, new Hongqiao, Hongqiao District, Tianjin City, No. 1 Applicant before: Zhongtie Tunnel Survey and Design Inst., Ltd. |
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