トンネル (1)

[III-146] Verification toward practical use of the Percussion Single Reverse Drilling Method by comparison with the Percussion Wire Line Sampling Method

*Ami Muraoka¹, Norihisa Nakahara¹, Takahito Funahashi¹, Fujio Sushida¹, Toshihiro Koyama¹, Satoru Kobayashi¹, Fumikazu Kobayashi¹, Daisuke Imamura², Hideaki Fujii² (1. TEKKEN CORPORATION, 2. KOKEN BORING MACHINE CORPORATION)

Keywords:advancing exploratory boring, a large amount of high pressure spring water, the Percussion Single Reverse Drilling Method, the Percussion Wire Line Sampling Method, core sampling mechanism, labor saving