地下構造物 (3)

[VI-368] Factors Affecting Bit Wear During Driving of Pipe-jacking in the Proximity of Tenryu River
-Ryusai National Facility Improvement Countermeasure Project: Tenryu River Siphon Culvert Construction Work (Part 2)-

*Yoshihiro hamada¹, Hirokazu Onishi¹ (1. Kumagaigumi)

Keywords:Pipe-jacking, Unconfined compressive strength, Quartz contents, Cutting