| 摘要 |
A method and apparatus for making a slurry trench or wall in the soil, comprising driving a beam section into the ground by pile driving, and simultaneously and entirely filling up the trench formed by soil displacement with a supporting fluid. The beam sectional is subsequently pulled out of the soil with a vibrating movement, which is obtained by delivering blows to the beam at a suitable frequency. During this extraction movement, sufficient supporting fluid is supplied for filling up the volume occupied by the beam. The soil displacement portion at the under-side of the beam, in cross section, has a box section with apertured side walls. The box section is shut off at the under-side by a permanent pile shoe or by hinged flaps, so that during extraction of the beam out of the soil, the interior of the box section communicates with the trench formed underneath the flaps or the pile shoe, said trench being thereby filled with supporting fluid.
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