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A platform for research: civil engineering, architecture and urbanism
DRILL BIT FOR CORE SAMPLING, HOLE ADJUSTMENT MEMBER AND DRILLING METHOD
PROBLEM TO BE SOLVED: To sample a core by drilling grounds with a different geology with one kind of drill bit for core sampling.SOLUTION: A drill bit for core sampling comprises a cylindrical base metal, an abrasive grain layer formed at the tip part of the base metal for drilling the ground, a plurality of fluid holes 13 that has an opening on the tip surface of the abrasive grain layer, a fluid channel on the tip surface side that is formed on the tip surface and that leads from the opening to an outer peripheral surface of the base metal, and a hole adjustment member 20 attached to the fluid hole 13 for adjusting the number of the fluid hole 13. The number of the fluid hole 13 is adjusted by the hole adjustment member 20 according to the geology of the ground to be drilled.SELECTED DRAWING: Figure 10
【課題】一種類のコア採取用ビットで異なる地質の地盤を掘削してコアを採取する。【解決手段】円筒形状の台金と、台金の先端部に形成されて地盤を掘削する砥粒層と、砥粒層の先端面に開口を有する複数の流体用穴１３と、先端面に形成されて、開口から台金の外周面に至る先端面側流体用通路と、流体用穴１３に取り付けられることで流体用穴１３の数を調整する穴調整部材２０と、を備える。そして、掘削する地盤の地質に応じて、穴調整部材２０により流体用穴１３の数を調整する。【選択図】図１０
DRILL BIT FOR CORE SAMPLING, HOLE ADJUSTMENT MEMBER AND DRILLING METHOD
PROBLEM TO BE SOLVED: To sample a core by drilling grounds with a different geology with one kind of drill bit for core sampling.SOLUTION: A drill bit for core sampling comprises a cylindrical base metal, an abrasive grain layer formed at the tip part of the base metal for drilling the ground, a plurality of fluid holes 13 that has an opening on the tip surface of the abrasive grain layer, a fluid channel on the tip surface side that is formed on the tip surface and that leads from the opening to an outer peripheral surface of the base metal, and a hole adjustment member 20 attached to the fluid hole 13 for adjusting the number of the fluid hole 13. The number of the fluid hole 13 is adjusted by the hole adjustment member 20 according to the geology of the ground to be drilled.SELECTED DRAWING: Figure 10
【課題】一種類のコア採取用ビットで異なる地質の地盤を掘削してコアを採取する。【解決手段】円筒形状の台金と、台金の先端部に形成されて地盤を掘削する砥粒層と、砥粒層の先端面に開口を有する複数の流体用穴１３と、先端面に形成されて、開口から台金の外周面に至る先端面側流体用通路と、流体用穴１３に取り付けられることで流体用穴１３の数を調整する穴調整部材２０と、を備える。そして、掘削する地盤の地質に応じて、穴調整部材２０により流体用穴１３の数を調整する。【選択図】図１０
DRILL BIT FOR CORE SAMPLING, HOLE ADJUSTMENT MEMBER AND DRILLING METHOD
コア採取用ビット、穴調整部材及び掘削方法
SO HAYATO (author) / WADA ATSUSHI (author) / SAWADA MINORU (author)
2017-01-12
Patent
Electronic Resource
Japanese
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