Research on Fire Disaster Fire-fighting Simulation System of Large_Long Tunnel

The large-long highway tunnel provides advantaged condition for highway traffic, at the same time, it also become bottleneck and accident point of the highway. Relative to the highway outside the tunnel, tunnel inside belongs to semi-closed environment and the drive condition is relatively poor, it makes tunnel become velocity bottleneck. Because of uncirculated air in tunnel and all kinds of deleterious gas let by vehicle, it is easy to result into traffic jam and secondary disaster. Large-long tunnel system is a complicated system integrated with many-sided theory and technology, such as traffic, detection and environment, and so on. The traffic flow in tunnel has unrepeatable characteristic. By building traffic flow model, fire disaster and environment model in the paper, the fire-fighting response mechanism, the action process and the realization technology in the condition of fire disaster are researched in emphases. It provided use for reference for the engineering building of Large-Long tunnel, the layout and design of fire-fighting establishment inside tunnel and the running management mechanism of tunnel.