| 摘要 |
<p>PROBLEM TO BE SOLVED: To shallow an excavation groove, and attain stabilization of a buried underground structure. SOLUTION: In a first process, an excavation groove 12 ensures a prescribed groove width W2 in a ground 13, a sheet pile 4 is driven in the ground 3, the ground between these sheet piles 4 in both sides is excavated, to be formed. In a second process, in an upper part of the ground F12 in a bottom surface of the excavation groove 12, a material of high support force of sand, crushed stone, etc., is input, the support ground C11, C12 is formed, a pipe line 15 is set up to an upper part of the support ground C11, C12. Successively, in a third process, to a prescribed height along the sheet pile 14, a sandbag 22a is piled up, a support wall, 22 is formed, a pipe line 15 is covered with diotextile, also it is spread on the support ground C12 in both sides of the pipe line 15, further to be arranged along inside the support wall 22. Next in a fourth process, in the excavation groove 12, a backfill material is input, the excavation groove 12 is filled back, so as to extract the sheet pile 14.</p> |
