Study on the diffusion of fire gas in deep subsurface structure

Inoue, Masahiro*; Hidaka, Yuki*; Nakaba, Nozomi*; Yamakami, Mitsunori; Hatakeyama, Nobuya; Okuzono, Akihiko*; Sakai, Tetsuo*

A fire in a deep underground structure has a potential threat that it may result in a big disaster because the ventilation system is fully disturbed and the fire gas spread to unanticipated places by the effect of buoyancy of the fire gas. The result of the study using scaled model experiment and computer simulation on the fire gas movement is described in the report.