| 摘要 |
Equipment for digging to construct diaphragm walls in the soil with an intermittent digging cycle in which each working cycle includes the steps of loading, temporary storing and unloading the debris of the excavated soil, the equipment being made up of a plurality of substantially vertical tubes set alongside one another (1), each containing a continuous screw (2), the top end of each screw being set into rotation by means of a motor assembly (3) whilst the bottom end (5) is provided with appropriate tools for breaking down the soil (4), the equipment being periodically hoisted out of the excavation by a rope system to and from depths greater than a length of the vertical tubes; the temporary store of the debris consisting in the whole inner volume of the tubes (1), the loading of the debris into the tubes being obtained turning the screws (2) in the excavating direction and the unloading of the debris out of the tubes being obtained turning the screw (2) in the direction opposite to the loading direction.
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