| 摘要 |
PROBLEM TO BE SOLVED: To provide an excavating method and an excavating apparatus having little work on the ground surface under excavation while forming a desired underground hole by accurately guiding and instructing an excavating body. SOLUTION: In this excavating method, underground excavation is carried out using the excavating body provided with a magnetic field transmitting means for generating the magnetic field and capable of jacking underground in a bendable manner, and a magnetic field receiving means disposed at a target spot to receive the magnetic field transmitted from the magnetic field transmitting means. In the method, the jacking quantity and attitude of the excavating body are measured in a section from an excavation starting point to a detectable region of the magnetic field receiving means, and the relative position of the excavating body is computed from the measured jacking quantity and attitude. Based on the relative position and attitude, the excavating body is guided and instructed into the detectable region along a jacking planning line, and in a section inside the detectable region, the relative position and attitude of the excavating body are computed from the magnetic field received by the magnetic field receiving means. Based on the relative position and attitude, the excavating body is guided and instructed along the jacking planning line. COPYRIGHT: (C)2005,JPO&NCIPI |
