| 摘要 |
2050924 9111564 PCTABS00006 Emplacement of foraminous piping in non-cohesive subsoil (figs. 1 to 20; and figs. 21 to 28). Foraminous piping (20, 120, 220, 330, 420, 520, 620, 720, 820, 920; and 1040) is positioned along an underwater route, and fluid is directed toward the subjacent subsoil (19, etc.; 1006) from the piping and/or adjacent source, fluidizing the subsoil. Then the piping is pressed down into the fluidized subsoil, as by upright earth augers (30, etc.) rotatable to increased depth in the subsoil. Alternatively, hollow upright stanchions (1030) engaged overhead by a placement pipe or tube (1020) are pre-inserted into subsoil fluidized by flow through the tube and out the bottom of the stanchion, after which a cable (1022) is extended from the tube/stanchion junction, for connection to the foraminous piping, and is withdrawn to lower the piping and to draw it to the stanchion location, where the cable may be released and the piping be secured to the stanchion via connecting parts (1023, 1033).
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