| 摘要 |
Apparatus is disclosed for removing soil from a well, which is particularly adapted for use both in cleaning out sandy deposits in pre-existing wells and in boring new well shafts through sandy ground, or through alternating hard and soft soil layers. The apparatus comprises a substantially cylindrical, hollow reservoir body tapered at the bottom end to form a drainage spout and open at the upper end. The reservoir body is lowered into the well liner toward the bottom of the well. A jet of water is introduced through a passageway in the reservoir to create a slurry wave which causes previously loosened soil inside the well liner to rise and overflow into the reservoir body, whereby the soil may then be removed from the well.
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