论文部分内容阅读
公路隧道在给人们带来便利交通的同时,也给火灾防治带来了许多新的问题。本文以秦岭某长大单洞单向公路隧道作为研究对象,采用CFD方法对长大公路隧道发生火灾时烟流性态的发展过程进行了三维数值模拟,隧道计算区域全长200 m,横截面面积65.37 m~2,总宽度10.5 m,总高度7.2 m,火源中心位于距隧道进口100 m处。文章针对公路隧道火灾在不同的通风工况下的浓度场和速度场分布规律展开研究,为科学地制定通风方案和防火救灾措旌提供了参考依据。
Highway tunnels bring convenience traffic to people and bring many new problems to fire prevention and control. In this paper, a single-hole and one-way highway tunnel with a long tunnel in Qinling is taken as the research object. The CFD method is used to simulate the three-dimensional numerical simulation of the smoke flow in a long-distance highway tunnel. The tunnel has a total length of 200 m, With an area of 65.37 m 2, a total width of 10.5 m and a total height of 7.2 m. The center of the fire source is located 100 m away from the tunnel entrance. In this paper, the distribution of concentration field and velocity field of fire in highway tunnel under different ventilation conditions are studied, which provides a reference for scientifically formulating ventilation scheme and fire prevention and disaster relief measures.