CORE COLLECTING DEVICE FOR GEOLOGICAL SURVEY

摘要

PURPOSE: To facilitate the handling of a core by observing the geological survey core collected from the underground without extracting it from an inner tube storing the core at the time of collection. ;CONSTITUTION: An inner tube 3 is removably inserted on the tip side of an outer tube 1, and the outer tube 1 is inserted into the ground while a soft and transparent sleeve 6 is stored in a circular storage section 52 provided on the tip side of the inner tube 3. The outer tube 1 is rotated by a drive section on the ground to form a core with a bit 2 provided at the tip of the outer tube 1, and the core is collected inside the inner tube 3 while being covered by a sleeve 6 delivered from the storage section 52. The inner tube 3 is formed with a transparent tube in a core collecting device for geological survey.;COPYRIGHT: (C)1993,JPO&Japio