About OTA TAKEHIRO
About 鉄道総合技術研
About OTA TAKEHIRO
About 地盤工学研究発表会発表講演集(CD-ROM)
About mountain tunnel
About natural ground
About swelling soil
About tunneling
About state
About variation
About mechanism
About timbering(formwork)
About shear failure
About plastic flow(rheology)
About multiplex
About timbering(mine)
About invert
About closing(lock)
About swelling country rock
About transformation state
About mechanism
About supplementary construction method
About multiplexing
About early invert closure
About Tunneling work
About Muck disposal,timbering,lining
About 膨張性地山
About 変状
About メカニズム
About 支保
About 補助工法
About 岩手
About トンネル