| 摘要 |
PROBLEM TO BE SOLVED: To solve the point at issue that muck in a tunnel upper half can be conveyed automatically to a specified position by a conveyor in a suppression beam because the position of the suppression beam cannot be changed in the suppression beam but the works of the conveyance of the muck in a tunnel lower half to the specified position are a serious matter because of a present condition in which the muck in the tunnel lower half is conveyed to the position by using a sandbag or the like by manpower. SOLUTION: Since muck 7a, 7b is generated by the pipe jacking of the tunnel boring machine but muck 7a in the approximately upper half of a tunnel is carried to the specified position on the entrance side 1 by driving the first conveyor 19 by charging from the charging opening 9 of a main beam 5 and muck 7b in the approximately lower half of the tunnel is carried automatically to the specified position on the entrance side 1 by driving the second conveyor 20 by placing on the second conveyor, the muck 7b in the approximately lower half of the tunnel need not be conveyed to the specified position by using the sandbag or the like by manpower as seen in conventional devices, and the muck 7b is treated easily. |
