地下構造物 (2)

11:40 AM - 11:50 AM JST(2:40 AM - 2:50 AM UTC)

[VI-318] Introduction to safety measures for tunnel excavation work in methane gas-containing ground

*Shinichi Hirooka¹, Katsuji Maeno¹, Yoshiyuki Oshino¹, Daigo Fujieda², Ryohei Nabana² (1. TAISEI Corporation, 2. Horonobe Underground Research Department)

Keywords:

methane gas,explosion-proof equipment,large depth tunnel

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