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《Chinese Journal of Underground Space and Engineering》 2013-03
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Study on the Optimization of Smoke Outlets' Layout in Road Tunnel Design

Xia Yongxu1,Li Feng1,2,Yao Yi1(1.The Safety Research Center of Chang'an University,Xi'an 710064,China;2.Xinjiang Transportation Planning Survey and Design Institute,Urumqi 830006,China)  
For the controversy comes out in recent years about the use of smoke exhaust channel in long highway tunnel,at first,this paper introduces the current application situation and the trend of smoke exhaust channel in the field of road ytunnel ventilation,then the important factors involved in the design of road tunnel smoke exhaust channel are further explored.Finaly,in the light of the heat release rate,the amount of smoke,the critical wind velocity as well as the rescue and escape time,the finite element numerical simulation method is used to systematically study the reasonable layout of smoke outlets' vertical spacing,opening number and the smoke exhaust effect.It is concluded that the opening specification type C refered in this paper can be used in road tunnel longitudinal ventilation system design.
【CateGory Index】: U453.5
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