About KUWAHARA TOORU
About 大林組 技研
About HATA KOJI
About 大林組 技研
About AKASAWA MASAHIKO
About 鉄道・運輸機構
About トンネル工学報告集
About drilling(rock)
About mountain tunnel
About geophysical exploration
About geology(geological feature)
About classification
About RMR
About working face front exploration
About Tunneling work
About Mechanical properties of rocks
About コア
About 削孔
About 調査
About 山岳トンネル
About 切羽前方探査