| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a back-filling method and work which does not require a spacious area for stock and transportation and also which has a relative large initial strength and further, which does not require a compacting work at the execution site and reduces the construction period. SOLUTION: In the burying work of a pipe line, pavement materials 12 of a road face are cut and the subgrade 14 is excavated to form an excavating hole 16. the surplus soil generated is transported to an adjacent processing plant 18 and pressurized to mold blocks 20. In this molding time, clay and a binder is added and mixed if necessary. A plurality of blocks 20 are laid down on the bottom (under the laid pipes) of the excavated hole 16. Then, pipes 10 are put on the blocks 20 and a number of blocks 20 are vertically and horizontally laid in the outer peripheral space thereof in the order of the sides of pipes and the upper face of pipes to fill back the excavated hole 16.</p> |
