Coring system bowling, bowling coring and methods deoxygenated water generator

摘要

PROBLEM TO BE SOLVED: To provide a core sampling boring system being more economical than a temperature-elevating deaerating system and having a deaeration efficiency more excellent than it, and to provide a deoxidized-water formation device and a core sampling boring method.;SOLUTION: The core sampling boring system has a rotatable tubular rod 14 having a bit 9 at a front end, an inner tube 17 arranged at the inside lower end of the rod, an excavator 3 with a path, in which deoxidized water force-fed into the rod is passed between the internal surface of the rod and the external surface of the inner tube from the inside of the rod and discharged onto a ground along the external surface of the rod through the front end of the rod, a non-powered type high-speed oxygen extractor 45 mixing water and an inert gas at a high speed and extracting nitrogen dispersing oxygen in supply water in a particle shape, a natural deaeration type gas-liquid separator 43 connected to the extractor 45 and a means 77 supplying the inside of the rod with deoxidized water separated by a first gas-liquid separator.;COPYRIGHT: (C)2005,JPO&NCIPI