The Hypothesis

To investigate the effect of explosions in an enclosed space such as a tunnel. Particles normally dissipate widely in open space on explosion, in an enclosed space they will have difficulty doing this. My test area is a tunnel and so particles which explode within the tunnel will bounce off each other and the effect of the explosion therefore would last longer than in an open space. The only means of escape is at either end of the tunnel and on explosion the particles fly out from the ends of the tunnels.