著者

長尾 和明 山本 浩之 笠 博義 竹津 英二 木村 義弘

出版者

Japan Society of Civil Engineers

雑誌

トンネル工学研究発表会論文・報告集 (ISSN:18849091)

巻号頁・発行日

vol.13, pp.263-268, 2003-11-17 (Released:2011-06-27)

参考文献数

6

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Iiyama tunnel has bored into Tertiary sandstone, mudstone and tuffbreccia which include inflammable gas like methane gas, at boundary of Nagano and Niigata prefecture. For methane gas is very combustible and explode easily, investigation and monitoring of inflammable gas is very important for safety construction of the tunnel. It was reported that horizontal exploratory boring, automated monitoring system and ventilation system for dilution of the gas were applied effectively on this tunneling.