JPS5457348A - Method of controlling ventilation in tunnel - Google Patents
Method of controlling ventilation in tunnelInfo
- Publication number
- JPS5457348A JPS5457348A JP12249877A JP12249877A JPS5457348A JP S5457348 A JPS5457348 A JP S5457348A JP 12249877 A JP12249877 A JP 12249877A JP 12249877 A JP12249877 A JP 12249877A JP S5457348 A JPS5457348 A JP S5457348A
- Authority
- JP
- Japan
- Prior art keywords
- tunnel
- detected
- pollution
- traffic volume
- rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Ventilation (AREA)
Abstract
PURPOSE: To provide a method of controlling ventilation in a tunnel, which is capable of controlling the air pollution level in the tunnel at a value lower than a predetermined reference level with a minimal amount of mechanical power required for the ventilation of the tunnel, whereby it is enabled to prevent operating the ventilating system longer than an actually required, minimal time length.
CONSTITUTION: Outputs of detector 37, such as pulse indicating passing of vehicle, pulse indicating vehicle speed, pulse indicating passing of a large vehicle, widnd direction and speed 35 in tunnerl, degree of pollution 34 in the tunnel, are supplied to operational unit or arithmetic unit 31. Traffic volume, velocity and rate of diesel vehicles are detected from said pulses 37, and amount of ventillated air is detected from signal 35. Further, average degree of air pollution in the tunnel is detected from signal 34, and pollution generating rate is detected from the gradient peculiar to the tunnel structure, pollution generating data of vehicles, traffic volume, vehicle speed, and rate of diesel vehicles in the traffic volume. The above ventilating system is controlled by determining a minimal amount of wind, etc. by the use of the results of the above various measurement and ventilating equation based on physical laws, such that pollutin level in the tunnel is kept within a required range after passing of a certain time period
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12249877A JPS5457348A (en) | 1977-10-14 | 1977-10-14 | Method of controlling ventilation in tunnel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12249877A JPS5457348A (en) | 1977-10-14 | 1977-10-14 | Method of controlling ventilation in tunnel |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5457348A true JPS5457348A (en) | 1979-05-09 |
Family
ID=14837324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12249877A Pending JPS5457348A (en) | 1977-10-14 | 1977-10-14 | Method of controlling ventilation in tunnel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5457348A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01112000A (en) * | 1987-10-26 | 1989-04-28 | Meidensha Corp | Method of predicting concentration of exhaust gas in road tunnel |
-
1977
- 1977-10-14 JP JP12249877A patent/JPS5457348A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01112000A (en) * | 1987-10-26 | 1989-04-28 | Meidensha Corp | Method of predicting concentration of exhaust gas in road tunnel |
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