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SpinDistribute.com Article Directory

The following article was published in our article directory on August 28, 2010.
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Tunnel fire safety at home and abroad Present Situation and Development Trend

Article Category: Finances

Author Name: Amanda xzh

1. Outline

With the construction and transportation, development and human production and life of the continuing demand , the traffic tunnel built in the world mileage quickly get a small extension . According to statistics, in 2000 the European transport tunnel network of over 10000km; China National Highway in the second survey , the total length of tunnel construction above the county level for nearly 550km. Over the past 10 years due to increasing traffic flow and road conditions improved and the complexity of the transport goods , an increase of traffic tunnel fire risk , causing many serious fires . For example, March 24, 1999 between France and Italy in the MontBlanc tunnel fire killed 41 people and 36 vehicles destroyed ; May 29, 1999 Austria TauemMotorway tunnel fire occurred , the death of 12 people and injuring 50 people ; November 11, 2000 Austria Kabu Lun mountains , mountain cable car fire , death 155 people and injuring 18.

Tunnel fire is not only a serious threat to human life and property , but also for transport, human activities cause great damage. Therefore , countries have invested the past 20 years, a considerable force on the tunnel of fire behavior and fire protection for a more extensive study , and achieved some results , developed a number of technical requirements and standards.

Generally include highway tunnel traffic tunnels , railway tunnels and underground tunnels and cities other traffic tunnels . Different types of tunnel fire protection there is no essential difference , in principle, should be under the tunnel to allow passage of vehicles and cargo to consider the possible fire scenarios to determine reasonable and effective fire safety measures. According to the study , the risk of road tunnel fire 20-25 times for the railway tunnel . Therefore , this paper analyzed and summarized the basis of studies at home and abroad , mainly for China's road tunnels and urban traffic tunnel fire safety design, research and development put forward some views .

2 . Research domestic and international tunnel fire

Since the 80s of the 20th century , carried out in the following aspects of foreign studies : the combustion characteristics of vehicles , simulated the impact of ventilation on the burning vehicles , smoke growth and wood crib fire with heptane fire simulation comparison of the normal fire load , the flue gas Formation of toxic components , the tunnel of fire growth and smoke movement within the numerical simulation , the tunnel lining in the fire performance of drivers in the tunnel and related psychological and behavioral factors , fire and rescue methods and strategies , and self-help principles . Study suggests that : Tunnel fire depends on the size of the type of vehicles . The temperature inside the tunnel can be achieved and the fire load can be seen in Table 1 .

Vehicle type maximum temperature ℃ maximum heat release rate (MW)

Car 400-5003-5

Bus 700-80015-20

Trucks ( other than tank cars ) 1000-1200 50-100

China is also numerical simulation of smoke tunnel , lining carrying capacity assessment, such as temperature distribution inside the tunnel made a great deal of respect .

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