山岳トンネル (3)

2:40 PM - 2:50 PM JST(5:40 AM - 5:50 AM UTC)

[VI-365] Report on the construction of a tunnel in the area where an old cave (the remains of a coal mine shaft) was discovered.

*Jumpei Sawada¹, Nobuhisa Ishimaru¹, Masaya Miura², Shozo Suzuki², Katsumasa Nakae³ (1. Kyushu Branch, Tokyu Construction co., Ltd., 2. Civil Engineering Division, Tokyu Construction Co.,Ltd., 3. Road Construction Division, Iizuka Prefectural Land Development Office, Fukuoka Prefecture)

Keywords:

Tunnels in the mountains,old caves (remains of coal mine shafts),brown coal beds,filling of cavities

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