| 摘要 |
<p>PROBLEM TO BE SOLVED: To eliminate double execution works of back-filling of a cut and cover hole for the installation of pipes or the like and a reexcavation work. SOLUTION: In a conventional piping work or the like, the installation work is carried out and a cut and cover hole is back-filled to temporarily restore the site in an appointed day and the excavation work is again carried out from the suspended position in the following day, in double excavation works. In this construction method, a replacement member 1 for back-filling of box- assembly type or the like which can be assembled or disassembled, is installed in the cut and cover hole B for temporary restoration instead of the back-filling sand and soil. Then a covering device 10 in which a height-adjustable base frame 11 and a lateral width-adjustable covering plate 15 are laid on the replacement member 1, is placed for the temporary restoration.</p> |
