PURPOSE: To conduct the ground improvement of the connecting section, etc., of a shielding machine properly and effectively, and to shorten the term of work.
CONSTITUTION: Curved pipes 14, in which a plurality of rubber nozzles 1, 1... are installed at regular intervals along the longitudinal directions of the pipes, are inserted and mounted to the side section of a shield tunnel 10 in an arcuate manner. An impregnator 3 with double packers connected by chains 25 so that the packers 4A, 4B can correspond to the bending of the curved pipes 14 mutually is inserted into the curved pipes 14, the inside of the ground is impregnated with a ground impregnating agent through the rubber nozzles 1 under the state, in which each of the double packers 4A, 4B is positioned while successively crossing the rubber nozzles 1, and the ground of the periphery of a widening section F is improved.
TANAKA TOSHIMASA
ENOMOTO MINORU
MURAKAMI KAZUTAKA
NAKAKOSHI BAN
FUKAISHI TAMIYUKI
MIKAMI NOBORU
FUJISAWA NOBUYUKI
ADACHI KEIJI
SEIBU KENSETSU KK
TONE KK
SEIKEN CO
NITTOC CONSTRUCTION
RAITO KOGYO KK
NIPPON KENSETSU KIKAIKA KYOKAI
| JPH04281991A | 1992-10-07 | |||
| JPH04281990A | 1992-10-07 | |||
| JPS6343235U | 1988-03-23 |