REFERENCE FRAME AND METHODE FOR QSM LAYING OF UNDERGROUND INSTALLATION USING SAME

摘要

PURPOSE: A reference frame and method for QSM laying of underground installation using same are provided to help a user to know underground facilities. CONSTITUTION: A support unit(120) is fixed to a certain part of underground facilities. An RFId tag(151) is installed at the certain part of the supporting unit and stores the information of underground facilities. The supporting unit has a rod shape and has one end which is fixed to the certain part of the underground facilities while having the other end which is extended to the ground. The support unit is comprised of a plurality of supporting members which are connected to each other.