CORE COLLECTING DEVICE, BORING DEVICE AND METHOD OF COLLECTING CORE

摘要

To provide a core collecting device capable of acquiring data for examining the accuracy of a collected core, a boring device using the core collecting device, and a method of collecting a core.SOLUTION: A core collecting device is detachable to one end of a rod of a boring device, and includes a tubular core barrel having a core collecting portion therein for collecting the core of the ground, and a first displacement meter for measuring the displacement of the core entering the core collecting portion. A first displacement gauge is a wire type displacement gauge in which the wire advances and retracts in a direction substantially parallel to an axis of the core barrel in the core collecting portion, and in which a tip of the wire is provided with a contact portion with which the core is in contact. The contact portion includes a contact portion main body and a pressing portion. The pressing portion is provided on the side periphery of the contact portion main body so that the contact portion presses the inner surface of the core barrel and the contact portion is movable in the axial direction of the core barrel inside the core barrel.SELECTED DRAWING: Figure 1