METHOD FOR DETERMINING DRILLING STATE, METHOD FOR CALCULATING DRILLING LENGTH, AND GEOLOGICAL LOGGING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for determining whether or not drilling is presently performed on a job site where boring is performed.;SOLUTION: In a determination method for determining whether or not a drill is in a drilling operation, it is determined that the drill is in the drilling operation, when the drill meets both of a condition (a1) in which the product of an oil pressure value of a hydraulic motor for generating torque of the drill, an oil pressure value of a hydraulic hammer for generating a striking force and an oil pressure value of a hydraulic cylinder for a feed mechanism is a constant value or above, and a condition (a2) in which a drill speed falls within a certain range.;COPYRIGHT: (C)2016,JPO&INPIT