A new tunnel assessment procedure integrating smoke dispersion and evacuation models

Frédéric Waymel (1) , Jeremy Fraser-Mitchell (2) , Emmanuel Ruffin (1)

1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 Fire division

This paper focuses on a new risk assessment procedure for tunnel. This procedure is based on the coupling between smoke dispersion models and evacuation models. It has been developed inside the UPGRADE procedure put in place in the UPTUN project. The method is based on two heat and mass flow (HMF) models for the calculation of tenability conditions due to a fire event: NewVendis for the 1D calculation and the global equilibrium of the tunnel network and FASIT for the calculation in the vicinity of the fire. Tenability conditions are used as input data for the evacuation calculation carried out by the evacuation model CRISP . All results (smoke dispersion and evacuation) are then combined in tenability diagrams which are a superposition of HMF tenability conditions and users' location in the tunnel. This kind of presentation can then be used to help understand injuries or people casualties and to take efficient safety measures to increase safety level in tunnel.

Keywords: TUNNEL; FIRE; RISK ASSESSMENT; SMOKE DISPERSION; EVACUATION; COMPUTER MODEL; TENABILITY; HVAC; HUMAN BEHAVIOUR

Domains: Engineering Sciences [physics]

Frédéric Waymel, Jeremy Fraser-Mitchell, Emmanuel Ruffin. A new tunnel assessment procedure integrating smoke dispersion and evacuation models. 2. International Symposium on Tunnel Safety and Security (ISTSS 2006), Mar 2006, Madrid, Spain. pp.93-100. ⟨ineris-00972531⟩