EXCAVATION DEVICE

PURPOSE:To eliminate requirement for chipping work of a vertical shaft by providing a vertical shaft shield machine preliminarily with a cutter and a partition wall of a horizontal tunnel shield machine, removing a part of vertical shaft after having excavated a vertical shaft and assembling the horizontal tunnel shield machine, and excavating a horizontal tunnel. CONSTITUTION:A vertical shaft shield machine 1 is provided with a vertical shaft-cutter 11 and a vertical shaft partition 12 in its bottom, and a vertical shaft-cutter driving device 12 inside, and a skin plate 14 of the vertical shaft shield machine 1 is provided with a window 15 through which the horizontal tunnel shield machine 2 can advance, and a sleeve 13 is provided at its outside. Then, a horizontal tunnel-cutter 21 and a horizontal tunnel partition 22 of the horizontal tunnel shield machine 2 is preliminarily provided in the vertical shaft excavation machine 1, and one end of a horizontal tunnel shield machine-fixing material 33 is installed on the horizontal tunnel partition wall 22, and the other end is fixed on a bearing 32, and the space surrounded by the sleeve 13 and the horizontal partition 22 is filled with fillers such as slurry etc. The sleeve 13 of the vertical shaft shield machine 1 is fixed to vertical shaft segments 19 and after the vertical shaft shield machine 1 has excavated, the horizontal tunnel shield machine 2 is assembled. Reaction form is transferred from the bearing wall 32 to a temporary support 35, and the horizontal tunnel shield machine 2 is advanced.