Importance

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Abstract

Described herein is excavation equipment for mixing in loco excavated soil and for the formation of diaphragms within the excavated hole of the type constituted by a plurality of rods for drilling soil (10) arranged alongside one another; each rod performs a rotary and translational motion about and along its own axis; supplied along the rods is a thickening fluid that exits with high kinetic energy through nozzles (23 and 24) made in positions corresponding to bits of a set of bits (11) located at the free ends of the rods (10) and rendered fixed in rotation and translation therewith; the bits are interconnected and separated by means of fixed structures (16, 16') that guarantee non-interference and maintenance of the distance between them; the bit of each rod (10) is equipped, at its ends, with disgregating means (14) and, at the centre, with means (18, 21) for mixing the soil and said aggregating fluid; the bits are enclosed at least partially within a quadrilateral caisson (12), designed to line the walls of the excavated hole as the equipment advances with the excavation in the soil; the nozzles (23, 24) are directed in positions corresponding to the <> areas of the caisson not reached by the bits (14).

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First Claim