METHOD FOR MEASURING POSITION OF UNDERGROUND EXCAVATION, DEVICE FOR MEASURING POSITION OF UNDERGROUND EXCAVATION, AND EXCAVATION SYSTEM FOR NON-OPEN-CUT METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for accurately measuring a boring tip position using position measuring means with simple constitution even at a spot with an obstacle such as a building in a non-open-cut construction method which excavates the underground without performing open cut method.;SOLUTION: A method for measuring a position of underground excavation comprises: determining an attitude angle of the attitude detection sensor 22 at the point of time from an attitude angle obtained by measuring thereof at each point of time in a process of the underground excavation with an attitude detection sensor 22 integrally equipped in an excavation bit 20 located at the excavation tip and from a deviation angle in the direction of the gravity with respect to the vertical line referred as the reference direction obtained in advance in the measurement of the attitude detection sensor 22 at the surface of the earth; determining a displacement amount of the excavation tip in the traveling direction corresponding to the addition of each of the rods 10 from the excavation direction corresponding to the attitude angle of the attitude detection sensor 22 and the length of each of the rods 10 every time the rod 10 is added one after another; and integrating the displacement amount of the excavation tip in the traveling direction by adding each of the rods 10, thereby determining an excavating position from the surface of the earth.;COPYRIGHT: (C)2014,JPO&INPIT