TUNNEL EXCAVATING/LINING CONSTRUCTION METHOD AND DEVICE THEREFOR

PROBLEM TO BE SOLVED: To provide a tunnel excavating/lining construction method and a device therefor being easy in the replacement of an excavator and a lining form in a tunnel performed between an excavating process and a lining process of the tunnel, requiring no exclusive equipment such as a form carrying rail, capable of shortening required time between the excavating process and the lining process and capable of reducing labor and a cost. SOLUTION: After an excavating process by a free cross section excavator 1, a portable NTL form 2 is carried up to a working face by this free cross section excavator 1 to be expanded/fixed to perform a lining process by placing concrete between the working face and natural ground, and after hardening the concrete, the portable NTL form 2 is contracted to be separated from a mold, and a process of carrying this up to a rear retreat position by the free cross section excavator 1 is repeated so as to obviate carrying exclusive equipment of the portable NTL form 2 as well as to easily replace the excavator 1 and the portable NTL form 2 in a tunnel.