| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an embedded earth retaining device capable of retaining earth in a state to make it possible to easily pass through the end of an embedded substance with comparatively simple structure in a connecting space section for connecting an embedded substance in an immersed tunneling method for immersing the embedded substance such as pipe line or the like into a back-filling material in an excavated trench and, at the same time, to make it possible to very easily and safely execute the installation of an earth retaining member in the connecting space section and the removal thereof from the connecting space section. SOLUTION: A pair of guide frames 3a are provided on an excavated trench side A of a connecting space retaining frame 2 installed in a connecting space section B, and a pair of right and left earth retaining sheets 4 and 4 for covering the surface of the excavated trench side A and capable of being detached at the central part by a fastener 10 to make earth retaining of the end of a pipe line constituent member P in a settlement movable manner are provided. In the rear side of the earth retaining sheets 4 and 4 (connecting space section side), a pair of up and down pipe section earth retaining bag bodies 5 and 5 holding the end of the pipe line constituent member P from the upper and lower sides are guided and borne on a pair of right and left guide frames 3a in a lowerable manner, and a height adjusting bottom part earth retaining bag body 6 is provided to the bottom of a pair of guide frames 3a.</p> |
