| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for filling around an abandoned mounting pipe in a sewage pipe, in which the abandoned mounting pipe is filled with a soil property stabilizer to surely prevent road caving and the like.SOLUTION: A method for filling around an abandoned mounting pipe in a sewage pipe is performed through at least: an examination step for examining the inside of a sewage pipe carried out by a master camera and a slave camera of a TV-camera mounting travel robot 31; an abandoned mounting pipe position data acquisition step for acquiring a signal from the slave camera 35; a connection port blocking step for blocking a connection port 17 of the abandoned mounting pipe 14 and a main pipe 12; a hole drilling step for drilling a hole 22 for soil property stabilizer pressure feed and a hole 23 for air vent arriving at a tip 15; an internal reconfirmation step before filling for sending a fiber scope 29 from the hole 22 for soil property stabilizer pressure feed and collating/confirming correspondence relation between it and tip position data; a soil property stabilizer filling step for pressure-feeding the soil property stabilizer 29 into the abandoned mounting pipe 14 through a pressure-feeding pipe 24; a ground surface restoration step for blocking and restoring the hole 22 for soil property stabilizer pressure feed and the hole 23 for air vent. |
