| 摘要 |
PURPOSE:To prevent pollution and to improve workability by assembling a segment in a tunnel drilled by a shield drilling machine and removing surplus soil inside after reinforcing an inside space of an assembled hollow structure with a reinforcing pillar, etc. CONSTITUTION:A tunnel of a desired sectional shape is drilled by oscillating a cutter head of a shield drilling machine, etc. Thereafter, a hollow structure 34 is constructed by assembling segments 26-31 in the tunnel. Thereafter, after depositing reinforced concrete, etc., in the segments 26-31 with surplus soil in the structure 34 in substitute for timbering, the surplus soil is removed. Furthermore, after forming a reinforced structure 36 of the reinforcing pillar, etc., in an inside space of the structure 34, dislodging of the shield drilling machine, etc., are carried out. Consequently, it is possible to prevent pollution of noise, etc.,and to carry out working at daytime as well as nighttime, and as a preventive measure of an existing buried things outside of a drilling site can be omitted and drilling, back filling, temporary appurtenant work, etc., can be mostly eliminated, it is possible to reduce cost. |
