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Natural ventilation method of tunnel sound barrier
The invention discloses a natural ventilation method of a tunnel sound barrier aiming that a natural ventilation vent hole of an existing tunnel sound barrier is communicated with the outside, parts of sound waves enter a tunnel through natural ventilation at the top of the sound barrier, the sound-proof effect is not bad, fresh air and tunnel waste gas can be only introduced and discharged by a same natural vent hole because the natural vent hole is formed in the top of the tunnel sound barrier, and the waste gas dilution effect is not ideal. The system comprises a sound barrier butted to a tunnel opening, a top natural vent hole is formed in the top of the sound barrier, the lower parts of the two sides of the sound barrier are provided with side lower natural vent holes, and the top natural vent hole and the side lower natural vent holes are all built-in with electric sealed valves. The effective organization of air current in the sound barrier and the circulating flow can be realized by a heat pressure difference and an air pressure difference between the top part of the sound barrier and the two side lower electric natural vent holes, the aims of effectively isolating sound, effectively reducing the temperature and waste gas concentration of the tunnel opening and effectively diffusing the flue gas flow in a fire condition can be achieved.
Natural ventilation method of tunnel sound barrier
The invention discloses a natural ventilation method of a tunnel sound barrier aiming that a natural ventilation vent hole of an existing tunnel sound barrier is communicated with the outside, parts of sound waves enter a tunnel through natural ventilation at the top of the sound barrier, the sound-proof effect is not bad, fresh air and tunnel waste gas can be only introduced and discharged by a same natural vent hole because the natural vent hole is formed in the top of the tunnel sound barrier, and the waste gas dilution effect is not ideal. The system comprises a sound barrier butted to a tunnel opening, a top natural vent hole is formed in the top of the sound barrier, the lower parts of the two sides of the sound barrier are provided with side lower natural vent holes, and the top natural vent hole and the side lower natural vent holes are all built-in with electric sealed valves. The effective organization of air current in the sound barrier and the circulating flow can be realized by a heat pressure difference and an air pressure difference between the top part of the sound barrier and the two side lower electric natural vent holes, the aims of effectively isolating sound, effectively reducing the temperature and waste gas concentration of the tunnel opening and effectively diffusing the flue gas flow in a fire condition can be achieved.
Natural ventilation method of tunnel sound barrier
SHI XIAOZENG (author)
2015-08-19
Patent
Electronic Resource
English
IPC:
E21F
Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels
,
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
/
E01F
ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
,
Zusätzliche Baumaßnahmen, wie die Ausstattung von Straßen oder die bauliche Ausbildung von Bahnsteigen, Landeplätzen für Hubschrauber, Wegweisern, Schneezäunen oder dgl.
| NTIS | 1981
Ventilation and sound insulation unit structure and ventilation sound barrier
| European Patent Office | 2022