BORING CORE SAMPLING DEVICE EQUIPPED WITH CORE BOTTOM EDGE CUTTING MECHANISM

摘要

PROBLEM TO BE SOLVED: To enable a boring core keeping actual properties in the natural state of subsoil and rock to be surely sampled.SOLUTION: A boring core sampling device equipped with a core bottom edge cutting mechanism includes: a core tube 2 cylindrically formed and provided with boring means 5 at the bottom edge of its cylindrical peripheral wall; and core bottom edge cutting means 21d formed in a bar-shape having the same curvature as that of the cylindrical peripheral wall of the core tube 2, provided with cutting means 21f at least in a part of an inside peripheral surface, and having one end attached to the lower end edge of the core tube 2 so that the cutting means 21f is horizontally swingable from a position where it is vertically superposed with the cylindrical peripheral wall of the core tube 2 toward the inside of the core tube 2.