| 摘要 |
<p>The present invention provides a tunnel structure using a small-diameter steel pipe which includes a plurality of small-diameter steel pipes (100) digging a tunnel surface using a digging rig machine, indented in predetermined intervals to be installed on a circular arc, having an empty inner portion, and having a plurality of grout holes formed on the outer circumferential surface; a grout material (G) injected inside one ends of the small-diameter steel pipes (100) to be jetted for reinforcing a surrounding soil layer through the grout holes; round girder (200) installed to correspond to the shape of the inner surface of the tunnel inside the inner surface of a tunnel on which a coupling body of the small-diameter steel pipes (100) and the grout material (G) is formed to temporarily prevent collapse of the inner surface of the tunnel; a tunnel lining (300) formed by pouring concrete while including the round girder (200) after arranging reinforcing bars inside the inner surface of the tunnel; and a lower tunnel slab (400) arranging the reinforcing bars at the lower portion of the tunnel and formed by pouring concrete; and a method of constructing the same.</p> |
