ENTRANCE FOR ARRIVAL OF JACKING PIPE, STRUCTURE OF ENTRANCE FOR ARRIVAL, AND WATER CUT-OFF CONSTRUCTION METHOD FOR ENTRANCE FOR ARRIVAL

摘要

PROBLEM TO BE SOLVED: To securely perform water cut-off handling in an arrival pit mouth of a jacking pipe and recover a drilling machine very safely. SOLUTION: The entrance for arrival composed of an entrance pipe 3 formed to have bore for storing the drilling machine 6 and the jacking pipe 7, a stuffing member 4 attached to a mouth of the entrance pipe 3, and a filling pipe 5 buried in the direction of diameter of the entrance pipe in the stuffing member 4 is attached to the arrival pit mouth 2 of the jacking pipe 7. After the drilling machine 6 and the jacking pipe 7 cut the stuffing member 4 and the filling pipe 5 and arrive in the entrance pipe 3, a grouting material 8 for water cut-off is poured between the entrance pipe 3 and the jacking pipe 7 from the filling pipe 5. COPYRIGHT: (C)2007,JPO&INPIT