Compagnie Du Sol

Sondages Injections Forages 's.i.f.' Entreprise Bachy

Soletanche Bachy France

Alain Deniau

Jean-Claude Gessay

Fabrice Mathieu

Philippe Lefort

Olivier Hesse

Michel Guerrero

Jean-Louis Proust

Alain Soriano

Jean-Pierre Ganachau

Excavator drum for the production of vertical trenches, including a cylindrical shell () mounted so sa to rotate about its axis of revolution and a plurality of excavating tools () mounted on the external face of the shell. The tools include a plurality of first rollers () equipped with cutting elements () mounted so as to rotate about axes, the mid-plane of the rollers substantially merging with the mid-plane (P-P') of the shell, and the length of which is less the an the length of the shell; and a plurality of pairs of second rollers () equipped with cutting elements, the rollers of the same pair being mounted so as to rotate about cantilever axles () each roller having a length at least equal to the distance that separates one end a first roller from the corresponding end of the shell, the casing of the external end of the second rollers being at least in the plane containing one end () of the shell.

Drum for an excavator that can be used in particular for the production of vertical trenches in hard or very hard soils

The invention provides apparatus for drilling trenches in the ground, the apparatus comprising a frame and a drilling assembly having a horizontal support plate connected to the bottom end of the frame, said plate supporting drilling tools disposed beneath said plate, said trench being filled with a drilling mud. The periphery of said plate has resilient sealing means for co-operating with the walls of the trench so as to provide at least partial sealing between said plate and the walls of the trench, and means for adjusting drilling mud flow rates from the portion of the trench situated above said plate to the portion of the trench situated beneath said plate, and also in the opposite direction.

Drilling apparatus for hard ground

Draining wall, method for producing same and element implemented thereby

Continuously reinforced diaphragm wall, method of construction and

A device for drilling into the ground for the in-situ production of columns of stabilized and compacted soil, which comprises at least two parallel shafts, each shaft driving in rotation one auger, each auger being fitted with a loosening drill head. The shafts and the shanks of the augers include a bore and at least one orifice for discharging a filler material, the augers having opposite hands and being driven in counterrotation, and which furthermore have a drive for reversing the direction of rotation of the augers, said device including an even number n, at least equal to 4, of augers and in that, as seen in cross-section, the axes of the augers are centered at the vertices of a regular n-sided polygon.

Device for the in-situ production of columns of stabilized and compacted

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Creteil, France

Alain Deniau