| 摘要 |
It is provided that an anchoring device, in which a positioning plate, intended for bearing on the surface of the soil, is mounted on a hollow rod, the rod supporting in series, from the positioning plate towards the free end, at least one helical disc followed by a drilling disc, wherein the rod extends beyond the drilling disc opposite the plate, and a bit is arranged on the free end of said rod, such that a first portion of the rod, suitable for being screwed into at least one first soil layer, extends from the plate to the drilling disc, and such that a second portion of the rod, suitable for anchoring in a second soil layer, extends from the drilling disc to the bit. |
