Fire Tests in a Blasted Rock Tunnel

摘要

Fire tests were performed in a blasted rock tunnel with an average cross-sectionof 9 m(squared). The tunnel measured 3 m wide, 3 m high and 100 m long. The fire was located at two different locations in the tunnel. The tunnel is naturally ventilated through a 13 m high chimney located at one end of the tunnel. Tests with different ventilation conditions and fuels were carried out. The fuels used were: heptane, kerosene, methanol and wood cribs. The effects of ventilation on the heat release rate and correlations between optical density and gas concentration at different locations in the tunnel were investigated. Comprehensive data for future comparison with CFD (Computational Fluid Dynamics) models were also obtained.