SHIELD TUNNEL EXCAVATING STRUCTURE USING GROUND SUBSIDENCE PREVENTING SYSTEM AND METHOD THEREOF

摘要

According to the present invention, a shield tunnel excavating structure using a tunnel boring machine (TBM) excavating a tunnel comprises: a machine part; a segment ring; a collapse preventing member; and a back fill member. The machine part excavates a tunnel. The segment ring is a base driving the machine part and includes a plurality of segments assembled with each other, and the segments having grout holes formed thereon. The collapse preventing member fills in an annular gap through a connection pipe connected to the grout holes of the segments ring, the annular gap being a space formed between the segment ring and an outer excavated surface of the tunnel, which is formed when the machine part is driven. The back fill member fills into the annular gap after the collapse preventing member is expanded in the annular gap. The present invention provides a shield tunnel excavating structure using a ground subsidence preventing system and a method thereof, restricting separation and collapse of soil particles and ground collapse causing ground subsidence or sinkage as the collapse preventing member is again expanded within the annular gap to fill in the annular gap; thus preventing ground subsidence or sinkage.;COPYRIGHT KIPO 2016