METHOD FOR INSTALLATION OF MEASURING DEVICE OF A PRECEDING SUBSIDENCE OF THE FRONT OF A TUNNEL

摘要

A method for installing a preceding subsidence measuring device of the front of a tunnel is provided to minimize damage of measuring parts and to insert and remove the measuring parts easily by excavating an excavation predicted part and inserting the device on the excavated part. Temporary excavation is carried out around the excavation predicted part(S101). A hardening material is injected in the original ground in the excavated hole(S102). The excavation is carried out in the excavation predicted part after the excavation predicted part is hardened(S103,S104). The excavation is carried out in the excavation predicted part and a preceding subsidence measuring device is inserted in the excavated part(S105).