CN108229013A - A kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel - Google Patents
A kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel Download PDFInfo
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Abstract
The present invention relates to a kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel, belong to, tunnel ventilation technical field.This method comprises the following steps：S1：Each section of main line tunnel vehicle flowrate is calculated successively；S2：Main line tunnel is decomposed into several sections, and be numbered；S3：The flue dust and CO discharge capacitys in each ring road tunnel and each section of main line tunnel are calculated, and summarizes obtain entire tunnel soot emissions total amount and CO total emission volumns respectively；S4：Entire tunnel dilution flue dust is calculated respectively and CO is respective needs wind total amount；S5：Each ring road tunnel dilution flue dust and the respective required airflows of CO are calculated, further calculates the final required airflow in each ring road tunnel；S6：According to the final required airflow in each ring road tunnel, the final required airflow in each section of main line tunnel is calculated.The method of the present invention has preferable engineering adaptability and operability, and theory significance is clear and definite, can well solve the calculating of the dilution pernicious gas required airflow of the full ventilation by force draft in Ramp urban road tunnel.
Description
Technical field
The invention belongs to tunnel ventilation technical fields, and being related to a kind of full ventilation by force draft in Ramp urban road tunnel needs
Methods of air quantity estimation.
Background technology
Ramp urban road tunnel is as a kind of novel tunnel of unconventional form, about Ramp urban road tunnel
Design of ventilation, the especially calculating to full ventilation by force draft dilution pernicious gas required airflow, presently relevant research are also less.
Chen Yuyuan application subway environment software for calculation SES auxiliary calculates Ramp urban road Tunnel Engineering ventage
System enhances the reasonability of Design of ventilation.Wang Yan etc. analyzes certain each speed work in Ramp urban road tunnel using SES softwares
Ventilating system under condition optimizes its ventilating system operational mode.Hu Qinghua application SES softwares analyze certain Ramp city road
Ventilation quantity in road Tunnel Engineering natural ventilation port and tunnel recommends the ventilation using gravity-flow ventilation+vertical shaft segmentation longitudinal ventilation
Scheme.Li Junmei etc. is segmented certain Ramp Impacts Evaluation of Urban Tunnel using ventilation network the flue gas control effect of longitudinal smoke evacuation system
Analysis is simulated, has obtained the optimal strategy of fan operation in different fire scenarios.Yangdong and Zhao Chengmei are for a certain more
The smoke controlling operating mode of branch tunnel, the governing equation of various flow patterns is established using theory analysis, and passes through mathematical method
Obtain Theory Solution.Gao Junpeng etc. is distributed by the smog in tunnel under the different fire scales of CFD Study on numerical calculation model
Characteristic and rule, and formulated the Ventilation Control scheme in tunnel under all kinds of fire incidents.Fu Qiongge etc. has built 1:10 packet
Tunnel model containing Ramp has carried out experimental study to city tunnel exit ramp Air Distribution.Cui Dezhen etc. passes through
Model test method has studied the ventilation effect of ventilation shaft when ventilation well type tunnel is in traffic retardance.
The studies above provides new thinking to carrying out Ramp urban road Ventilation Design for Tunnels and improving service condition,
But achievement in research does not solve the problems, such as the concrete application in engineering design systematically, engineering practice directive significance is insufficient.
Freeway tunnel of the length that China is built in recent years more than 5000m generally uses " ventilation shaft blow and exhaust+jet stream
The combination of wind turbine ".According to investigation, the existing length in China is less than freeway tunnel (Slip frequency vector control, the Tan Jiazhai of 5000m
Tunnel, black clouds mountain tunnel etc.) also generally use longitudinal ventilation mode.So as to be not only super long tunnel, middle long-highway-tunnel also has
The trend developed to longitudinal ventilation mode.
Due to its tunnel air inlet (corresponding bypass type tunnel) or outlet air (corresponding confluent type tunnel) be a hole into or
Go out, the ventilation between the ventilation in main line tunnel and ring road tunnel and ring road tunnel mutually influences, and Tunnel Ventilation System is deposited
In multiple branches, ventilation network is more complicated, and dilution pernicious gas required airflow cannot use conventional ventilation computational methods to carry out design.
In this regard, existing research and design specification do not provide clear and definite method and regulation, cause the design of corresponding ventilating engineering lack guidance according to
According to.
Invention content
In view of this, the purpose of the present invention is to provide a kind of full ventilation by force draft in Ramp urban road tunnel to need wind
Computational methods are measured, this method has preferable engineering adaptability and operability, and theory significance is clear and definite, can well solve
The calculating of the dilution pernicious gas required airflow of the full ventilation by force draft in Ramp urban road tunnel.
In order to achieve the above objectives, the present invention provides following technical solution：
A kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel, this method include following step
Suddenly：
S1：According to the total vehicle flowrate of entire Tunnel Design and the design vehicle flowrate in ring road tunnel, each section of main line tunnel is calculated successively
Road vehicle flowrate；
S2：Tie point between ring road tunnel and main line tunnel is decomposed into several sections as separation, by main line tunnel, and
It is numbered；
S3：The flue dust and CO discharge capacitys in each ring road tunnel and each section of main line tunnel are calculated, and summarizes obtain entire tunnel respectively
Road soot emissions total amount and CO total emission volumns；
S4：According to entire tunnel soot emissions total amount and CO total emission volumns, entire tunnel dilution flue dust and CO are calculated respectively
It is respective to need wind total amount；
S5：According to each ring road tunnel flue dust accounting and CO accountings, each ring road tunnel dilution flue dust and the respective need of CO are calculated
Air quantity further calculates the final required airflow in each ring road tunnel；
S6：According to the final required airflow in each ring road tunnel, the final required airflow in each section of main line tunnel is calculated.
Further, step S2 is specially：
S21：Tie point between ring road tunnel and main line tunnel is decomposed into several sections as separation, by main line tunnel；
S22：Main line tunnel according to the increased sequence of vehicle flowrate is numbered, is 1 by each section of main line tunnel number consecutively,
2,3…n；
S23：Ring road tunnel is carried out according to the main line tunnel after the main line tunnel number and separation before separation
Number, by ring road tunnel number be " 1 → 2 ", " 2 → 3 " ..., " n-1 → n ".
Further, entire tunnel soot emissions total amount and CO total emission volumns described in step S3 are：
∑QVI=QVI1+QVI1→2+QVI2+…+QVI(n-1)→n+QVIn
∑QCO=QCO1+QCO1→2+QCO2+…+QCO(n-1)→n+QCOn
Wherein, it is tunnel soot emissions total amount, for n-th section of main line tunnel soot emissions total amount, QVI(n-1)→nFor (n-1)th → n
The smoke discharge amount in section ring road tunnel；It is n-th section of main line tunnel CO total emission volumn for tunnel CO total emission volumns, QCO(n-1)→nIt is
The CO discharge capacitys in n-1 → n sections of ring road tunnels.
Further, entire tunnel dilution flue dust and CO is respective needs the wind total amount to be in step S4：
∑Qreq(VI)=∑ QVI/K
∑Qreq(CO)=∑ QCO×P0×T×106/(δCO×P×T0)
Wherein, wind total amount being needed for tunnel dilution flue dust, wind total amount is needed for tunnel dilution CO, K is flue dust design concentration,
It is standard atmospheric pressure for CO concentration, P is tunnel location atmospheric pressure, is standard temperature, and T is tunnel location summer temperature.
Further, step S5 is specifically, according to the respective proportion of the smoke discharge amount in each ring road tunnel and CO discharge capacitys,
The required airflow of each ring road tunnel dilution flue dust and the required airflow of dilution CO are acquired respectively, and big value therebetween is taken to be used as each circle
Road tunnel needs wind total amount,
Flue dust required airflow：
Qreq(VI)n=∑ Qreq(VI)
Qreq(VI)(n-1)=Qreq(VI)n-Qreq(VI)(n-1)→n
Wherein, Qreq(VI)nFor the soot emissions required airflow in n-th section of main line tunnel, Qreq(VI)(n-1)→nFor n-1 → n sections of ring roads
The soot emissions required airflow in tunnel, Qreq(VI)(n-1)Soot emissions required airflow for (n-1)th section of main line tunnel；
CO required airflows：
Qreq(CO)n=∑ Qreq(CO)
Qreq(CO)(n-1)=Qreq(CO)n-Qreq(CO)(n-1)→n
Wherein, Qreq(CO)nCO for n-th section of main line tunnel discharges required airflow, Qreq(CO)(n-1)→nFor n-1 → n sections of ring road tunnels
The CO discharge required airflows in road, Qreq(CO)(n-1)CO for (n-1)th section of main line tunnel discharges required airflow；
Each ring road tunnel needs wind total amount：
Qreq(n-1)→n=max { Qreq(VI)(n-1)→n, Qreq(CO)(n-1)→n}
Wherein, Qreq(n-1)→nWind total amount is needed for (n-1)th → n sections of ring road tunnels.
Further, the final required airflow in each section of main line tunnel is specially in step S6：
Qreqn=Qreq1+Qreq1→2+Qreq2+…+Qreq(n-2)→(n-1)+Qreq(n-1)
Wherein, QreqnFinal required airflow for n-th section of tunnel.
The beneficial effects of the present invention are：The method of the invention acquires respectively first always needs wind needed for dilution flue dust and CO
Then amount calculates each ring road tunnel required airflow by harmful gas emission pro rata distribution, finally acquire final needed for main line tunnel
Air quantity.The method of the present invention has preferable engineering adaptability and operability, and theory significance is clear and definite, can well solve more
The calculating of the dilution pernicious gas required airflow of the full ventilation by force draft in ring road urban road tunnel.
Description of the drawings
In order to make the purpose of the present invention, technical solution and advantageous effect clearer, the present invention provides drawings described below and carries out
Explanation：
Fig. 1 is flow chart of the present invention；
Fig. 2 is the number schematic diagram in main line tunnel of the present invention and ring road tunnel；
Fig. 3 is the geometric shape schematic diagram of the embodiment of the present invention；
Fig. 4 is the computation model figure of the embodiment of the present invention.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the present invention is described in detail.
The present invention is a kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel, as shown in Figure 1, Figure 2
It is shown, include the following steps：Step 1：According to the total vehicle flowrate of entire Tunnel Design and the design vehicle flowrate in ring road tunnel, successively
Acquire each section of main line tunnel vehicle flowrate；Step 2：Tie point between ring road tunnel and main line tunnel is separation, by main line
Tunnel is decomposed into several sections, is numbered；Step 3：Acquire the flue dust in each ring road tunnel and each section of main line tunnel and CO discharges
Amount, and summarize acquire entire tunnel soot emissions total amount and CO total emission volumns respectively；Step 4：According to entire tunnel soot emissions
Total amount and CO total emission volumns acquire entire tunnel dilution flue dust and CO is respective needs wind total amount；Step 5：According to each ring road tunnel
Flue dust accounting and CO accountings acquire each ring road tunnel dilution flue dust and the respective required airflows of CO, further acquire each ring road tunnel
Final required airflow；Step 6：According to the final required airflow in each ring road tunnel, finally acquiring each section of the final of main line tunnel needs wind
Amount.
The embodiment of the present invention, as shown in figure 3, belonging to major urban arterial highway, height above sea level is about 300m~450m, traffic form
For double hole one-way traffics, equipped with two lines of left and right, left threaded list road and right line length of tunnel are respectively 2140m, 2115m.Using right line as
Embodiment, right line are equipped with 2 ring road tunnels, length about 715m and 772m respectively.Main line Tunnel Design speed be 50km/h, ring road
Tunnel Design speed is 30km/h.Main line tunnel be two class tunnels, ring road tunnel be three classes tunnel, ruling grade 4.5%.Only
Automotive traffic only is current, and equipped with traffic monitoring system, project provides fortification against earthquakes classification as A classes.
According to being reported according to traffic volume forecast for traffic profession, the magnitude of traffic flow (long term (2039 in the 3rd section of main line tunnel
Year)) it is 2397pcu/h, " 1 → 2 " ring road long term one-way volume is 666pcu/h, and " 2 → 3 " ring road long term one-way volume is
892pcu/h, according to step 1, the magnitude of traffic flow that calculates the 2nd section and paragraph 1 main line tunnel be respectively 1505pcu/h,
839pcu/h。
Other relevant parameters of the embodiment of the present invention are shown in Table 1~3,
1 dominant design criterion of table and relevant parameter
2 vehicle composition table of table
Gasoline car and diesel vehicle ratio table in 3 vehicle of table
Step 2：Main line tunnel is decomposed into several by the tie point between ring road tunnel and main line tunnel as separation
Section；By vehicle flowrate order incremented by successively, the n that is 1,2,3 by each section of main line tunnel number consecutively ...；The number in ring road tunnel by
The main line tunnel number after main line tunnel number and separation before separation collectively constitutes, and the number in ring road tunnel is " 1
→ 2 ", " 2 → 3 ", " 2 → 3 " ..., " n-1 → n ", as shown in Figure 4.
Step 3：According to the vehicle flowrate in each section of tunnel, the inner section product of integrating tunnel, longitudinal slope, height above sea level, vehicle structure
Into and road speed, calculate the discharge capacity of each section of tunnel CO and flue dust,
∑QVI=QVI1+QVI1→2+QVI2+…+QVI(n-1)→n+QVIn (1)
ΣQCO=QCO1+QCO1→2+QCO2+…+QCO(n-1)→n+QCOn (2)
Wherein, it is tunnel soot emissions total amount, for n-th section of main line tunnel soot emissions total amount, QVI(n-1)→nFor (n-1)th → n
The smoke discharge amount in section ring road tunnel；It is n-th section of main line tunnel CO total emission volumn for tunnel CO total emission volumns, QCO(n-1)→nIt is
The CO discharge capacitys in n-1 → n sections of ring road tunnels.
According to formula (1) and (2), corresponding CO and soot emissions total amount are calculated, as shown in table 4
The discharge capacity of table 4CO and flue dust
Step 4：According to entire tunnel soot emissions total amount and CO total emission volumns, entire tunnel dilution flue dust is calculated respectively
With CO is respective needs wind total amount,
ΣQreq(VI)=Σ QVI/K (3)
∑Qreq(CO)=∑ QCO×P0×T×106/(δCO×P×T0) (4)
Wherein, wind total amount being needed for tunnel dilution flue dust, wind total amount is needed for tunnel dilution CO, K is flue dust design concentration,
It is standard atmospheric pressure for CO concentration, P is tunnel location atmospheric pressure, is standard temperature, and T is tunnel location summer temperature.
According to formula (3), (4), acquire entire tunnel dilution flue dust and CO is respective needs wind total amount, be as a result respectively
754.49m3/s, 314.89m3/s, as shown in figure 3, the ventilation quantity of the present embodiment tunnel construction sections 3, which will undertake all tunnel construction sections, is harmful to gas
The dilution task of body, total blast volume are the air quantity of tunnel construction sections 3.
Step 5 according to the respective proportion of the smoke discharge amount in each ring road tunnel and CO discharge capacitys, acquires each circle respectively
The required airflow of road tunnel dilution flue dust and the required airflow of dilution CO, and big value therebetween is taken to need wind as each ring road tunnel
Total amount,
Flue dust required airflow：
Qreq(VI)n=∑ Qreq(VI) (5)
Qreq(VI)(n-1)=Qreq(VI)n-Qreq(VI)(n-1)→n (7)
Wherein, Qreq(VI)nFor the soot emissions required airflow in n-th section of main line tunnel, Qreq(VI)(n-1)→nFor n-1 → n sections of ring roads
The soot emissions required airflow in tunnel, Qreq(VI)(n-1)Soot emissions required airflow for (n-1)th section of main line tunnel；
CO required airflows：
Qreq(CO)n=∑ Qreq(CO) (8)
Qreq(CO)(n-1)=Qreq(CO)n-Qreq(CO)(n-1)→n (10)
Wherein, Qreq(CO)nCO for n-th section of main line tunnel discharges required airflow, Qreq(CO)(n-1)→nFor n-1 → n sections of ring road tunnels
The CO discharge required airflows in road, Qreq(CO)(n-1)CO for (n-1)th section of main line tunnel discharges required airflow；
Each ring road tunnel needs wind total amount：
Qreq(n-1)→n=max { Qreq(VI)(n-1)→n, Qreq(CO)(n-1)→n} (11)
Wherein, Qreq(n-1)→nWind total amount is needed for (n-1)th → n sections of the final of ring road tunnel.
According to formula (5)~(10), by taking tunnel construction sections 2 → 3 and 1 → 2 as an example, ring road tunnel dilution pernicious gas required airflow meter
Calculation process is：
The air quantity of tunnel construction sections 2 will undertake the dilution task of tunnel construction sections 2,1,1 → 2, and the air quantity of ring road section 2 → 3 need to only undertake
The dilution task of its own, tunnel construction sections 2 and the air quantity of ring road section 2 → 3 are allocated on the basis of the air quantity of tunnel construction sections 3：
The ratio of the generation CO of ring road section 2 → 3：0.009609/(0.009609+0.031148+0.016552+
0.007746)=0.1477
The dilution CO air quantity of ring road section 2 → 3 is：0.1477 × 754.49=111.44m3/s
The dilution CO air quantity of tunnel construction sections 2 is 754.49-111.44=643.05m3/s.
Tunnel construction sections 1 and the air quantity of ring road section 1 → 2 are allocated on the basis of the air quantity of tunnel construction sections 2.
The ratio of the generation CO of ring road section 1 → 2 is：0.007746/ (0.007746+0.016552)=0.3188,
The dilution CO air quantity of ring road section 1 → 2 is：0.3188 × 643.05=205.00m3/s.
The dilution CO air quantity of tunnel construction sections 1 is：643.05-205.00=438.05m3/s.
Ring road section 2 → 3,1 → 2 is calculated in the same fashion and the dilution flue dust air quantity of tunnel construction sections 1 is respectively
52.56、96.86、165.50m3/s。
By formula (11), it is big between CO air quantity and flue dust air quantity that ring road section dilution pernicious gas required airflow finally takes it to dilute
Value, result of calculation are as shown in table 5.
5 ring road tunnel of table dilutes pernicious gas required airflow
Step 6：According to the final required airflow in each ring road tunnel, the final required airflow in each section of main line tunnel is calculated.
The final required airflow in each section of main line tunnel is specially：
Qreqn=Qreq1+Qreq1→2+Qreq2+…+Qreq(n-2)→(n-1)+Qreq(n-1) (12)
Wherein, QreqnFinal required airflow for n-th section of tunnel.
Final required airflow of the final required airflow in each section of main line tunnel for each ring road tunnel of its institute's " administration " in step 6
The sum of, each section of final required airflow in main line tunnel is calculated, is specifically calculated by formula (12), calculates the 2nd section, the 3rd section of main line respectively
The final required airflow in tunnel, later due to not having ring road tunnel, paragraph 1 main line tunnel is similar to circle in paragraph 1 main line tunnel
Road tunnel, the final required airflow in paragraph 1 main line tunnel are shown in Table 5.
The final dilution pernicious gas required airflow of main line tunnel construction sections 2 is the sum of ring road tunnel 1 → 2 and tunnel construction sections 1：438.05
+ 205.00=643.5m3/s；
The final dilution pernicious gas required airflow of main line tunnel construction sections 3 is the sum of ring road tunnel 1 → 2,2 → 3 and tunnel construction sections 1：
438.05+205.00+111.44=754.49m3/s.
Finally illustrate, preferred embodiment above is only to illustrate the technical solution of invention and unrestricted, although passing through
Above preferred embodiment is described in detail the present invention, however, those skilled in the art should understand that, can be in shape
Various changes are made in formula and to it in details, without departing from claims of the present invention limited range.
Claims (6)
1. a kind of full ventilation by force draft required airflow computational methods in Ramp urban road tunnel, it is characterised in that：This method packet
Containing following steps：
S1：According to the total vehicle flowrate of entire Tunnel Design and the design vehicle flowrate in ring road tunnel, each section of main line tunnel vehicle is calculated successively
Flow；
S2：Tie point between ring road tunnel and main line tunnel is decomposed into several sections, and carry out as separation, by main line tunnel
Number；
S3：The flue dust and CO discharge capacitys in each ring road tunnel and each section of main line tunnel are calculated, and summarizes obtain entire tunnel cigarette respectively
Dirt total emission volumn and CO total emission volumns；
S4：According to entire tunnel soot emissions total amount and CO total emission volumns, entire tunnel dilution flue dust and CO are calculated respectively respectively
Need wind total amount；
S5：According to each ring road tunnel flue dust accounting and CO accountings, each ring road tunnel dilution flue dust and the respective required airflows of CO are calculated,
Further calculate the final required airflow in each ring road tunnel；
S6：According to the final required airflow in each ring road tunnel, the final required airflow in each section of main line tunnel is calculated.
2. the full ventilation by force draft required airflow computational methods in a kind of Ramp urban road tunnel according to claim 1,
It is characterized in that：Step S2 is specially：
S21：Tie point between ring road tunnel and main line tunnel is decomposed into several sections as separation, by main line tunnel；
S22：Main line tunnel according to the increased sequence of vehicle flowrate is numbered, is 1,2 by each section of main line tunnel number consecutively,
3…n；
S23：Ring road tunnel is numbered according to the main line tunnel after the main line tunnel number and separation before separation,
By ring road tunnel number be " 1 → 2 ", " 2 → 3 " ..., " n-1 → n ".
3. the full ventilation by force draft required airflow computational methods in a kind of Ramp urban road tunnel according to claim 2,
It is characterized in that：Entire tunnel soot emissions total amount and CO total emission volumns described in step S3 are：
∑QVI=QVI1+QVI1→2+QVI2+…+QVI(n-1)→n+QVIn
∑QCO=QCO1+QCO1→2+QCO2+…+QCO(n-1)→n+QCOn
Wherein, it is tunnel soot emissions total amount, for n-th section of main line tunnel soot emissions total amount, QVI(n-1)→nFor (n-1)th → n sections of circles
The smoke discharge amount in road tunnel；It is n-th section of main line tunnel CO total emission volumn for tunnel CO total emission volumns, QCO(n-1)→nIt is (n-1)th
The CO discharge capacitys in → n sections of ring road tunnel.
4. the full ventilation by force draft required airflow computational methods in a kind of Ramp urban road tunnel according to claim 3,
It is characterized in that：Entire tunnel dilution flue dust and CO is respective needs the wind total amount to be in step S4：
∑Qreq(VI)=∑ QVI/K
∑Qreq(CO)=∑ QCO×P0×T×106/(δCO×P×T0)
Wherein, wind total amount is needed for tunnel dilution flue dust, needs wind total amount for tunnel dilution CO, K is flue dust design concentration, is CO
Concentration is standard atmospheric pressure, and P is tunnel location atmospheric pressure, is standard temperature, and T is tunnel location summer temperature.
5. the full ventilation by force draft required airflow computational methods in a kind of Ramp urban road tunnel according to claim 4,
It is characterized in that：Step S5 is specifically, according to the respective proportion of the smoke discharge amount in each ring road tunnel and CO discharge capacitys, respectively
The required airflow of each ring road tunnel dilution flue dust and the required airflow of dilution CO are acquired, and big value therebetween is taken to be used as each ring road tunnel
Road needs wind total amount,
Flue dust required airflow：
Qreq(VI)n=∑ Qreq(VI)
Qreq(VI)(n-1)=Qreq(VI)n-Qreq(VI)(n-1)→n
Wherein, Qreq(VI)nFor the soot emissions required airflow in n-th section of main line tunnel, Qreq(VI)(n-1)→nFor n-1 → n sections of ring road tunnels
Soot emissions required airflow, Qreq(VI)(n-1)Soot emissions required airflow for (n-1)th section of main line tunnel；
CO required airflows：
Qreq(CO)n=∑ Qreq(CO)
Qreq(CO)(n-1)=Qreq(CO)n-Qreq(CO)(n-1)→n
Wherein, Qreq(CO)nCO for n-th section of main line tunnel discharges required airflow, Qreq(CO)(n-1)→nFor n-1 → n sections of ring road tunnels
CO discharges required airflow, Qreq(CO)(n-1)CO for (n-1)th section of main line tunnel discharges required airflow；
Each ring road tunnel needs wind total amount：
Qreq(n-1)→n=max { Qreq(VI)(n-1)→n, Qreq(CO)(n-1)→n}
Wherein, Qreq(n-1)→nWind total amount is needed for (n-1)th → n sections of ring road tunnels.
6. the full ventilation by force draft required airflow computational methods in a kind of Ramp urban road tunnel according to claim 5,
It is characterized in that：The final required airflow in each section of main line tunnel is specially in step S6：
Qreqn=Qreq1+Qreq1→2+Qreq2+…+Qreq(n-2)→(n-1)+Qreq(n-1)
Wherein, QreqnFinal required airflow for n-th section of tunnel.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033675A (en) * | 2018-08-09 | 2018-12-18 | 桂林航天工业学院 | Critical point of wind of Extra-long Highway Tunnel circulating ventilation system compares determination method |
| CN112814720A (en) * | 2019-11-15 | 2021-05-18 | 中铁第六勘察设计院集团有限公司 | Multi-turn-channel municipal and highway tunnel ventilation volume distribution calculation method |
| CN115828403A (en) * | 2023-02-16 | 2023-03-21 | 西南交通大学 | Multi-branch tunnel network air demand calculation system and calculation method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0240713A1 (en) * | 1986-04-07 | 1987-10-14 | Mitsubishi Denki Kabushiki Kaisha | Controller for tunnel ventilating system |
| CN103088734A (en) * | 2013-02-26 | 2013-05-08 | 杜伟健 | Three-dimensional transportation system for urban main road |
| CN104564122A (en) * | 2014-12-05 | 2015-04-29 | 浙江大学 | City tunnel ventilation testing device with ramp |
| CN105243191A (en) * | 2015-09-14 | 2016-01-13 | 南京林业大学 | Method for analyzing tunnel car exhaust gas flow and concentration distribution law |
| CN105525936A (en) * | 2016-02-02 | 2016-04-27 | 招商局重庆交通科研设计院有限公司 | Ventilation control method for highway tunnel group |
| CN105673059A (en) * | 2016-01-25 | 2016-06-15 | 浙江省交通规划设计研究院 | Method for arranging fan of road tunnel with ramp at exit |
| CN107288675A (en) * | 2017-08-01 | 2017-10-24 | 招商局重庆交通科研设计院有限公司 | Tunnel intelligent aeration control method |
-
2017
- 2017-12-29 CN CN201711486253.4A patent/CN108229013B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0240713A1 (en) * | 1986-04-07 | 1987-10-14 | Mitsubishi Denki Kabushiki Kaisha | Controller for tunnel ventilating system |
| CN103088734A (en) * | 2013-02-26 | 2013-05-08 | 杜伟健 | Three-dimensional transportation system for urban main road |
| CN104564122A (en) * | 2014-12-05 | 2015-04-29 | 浙江大学 | City tunnel ventilation testing device with ramp |
| CN105243191A (en) * | 2015-09-14 | 2016-01-13 | 南京林业大学 | Method for analyzing tunnel car exhaust gas flow and concentration distribution law |
| CN105673059A (en) * | 2016-01-25 | 2016-06-15 | 浙江省交通规划设计研究院 | Method for arranging fan of road tunnel with ramp at exit |
| CN105525936A (en) * | 2016-02-02 | 2016-04-27 | 招商局重庆交通科研设计院有限公司 | Ventilation control method for highway tunnel group |
| CN107288675A (en) * | 2017-08-01 | 2017-10-24 | 招商局重庆交通科研设计院有限公司 | Tunnel intelligent aeration control method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033675A (en) * | 2018-08-09 | 2018-12-18 | 桂林航天工业学院 | Critical point of wind of Extra-long Highway Tunnel circulating ventilation system compares determination method |
| CN109033675B (en) * | 2018-08-09 | 2022-12-09 | 桂林航天工业学院 | Critical wind division ratio judgment method of circulating ventilation system of extra-long highway tunnel |
| CN112814720A (en) * | 2019-11-15 | 2021-05-18 | 中铁第六勘察设计院集团有限公司 | Multi-turn-channel municipal and highway tunnel ventilation volume distribution calculation method |
| CN115828403A (en) * | 2023-02-16 | 2023-03-21 | 西南交通大学 | Multi-branch tunnel network air demand calculation system and calculation method |
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