| 摘要 |
In order to make a continuous artificial wall (2) into the ground (S), a trench (T) is dug into the ground and the trench is filled with a specific material. There is provided at a reduced distance (L) backwards of the trench front (7) retaining means (R) applied against the walls of the trench and appropriate to advance with the trench front (7). As the front (7) advances, the filling material is introduced into the space which has been cleared, the front (12) of said material bearing against the retainer means (R).
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