Research on Parameters Setting of Smoke Exhaust Outlet and Cross Passage on Side Wall of Underwater Tunnel

Abstract

Abstract In recent years, the length and scale of underwater road tunnels have continued to increase. Ventilation and fire prevention have become one of the key control factors for the successful construction and safe operation of underwater road tunnels. As one of the smoke extraction schemes of highway tunnel, determining the layout of sidewall smoke outlet is very important. In this paper, for the purpose of people being able to evacuate safely in a tunnel fire accident, taking an underwater tunnel as an engineering example, the available safe evacuation time (ASET) and the required safe evacuation time (RSET) under different working conditions are compared and analyzed by simulating the fire smoke spread and personnel evacuation process in the tunnel, so as to provide quantitative basis for the arrangement scheme of sidewall smoke outlet.