Described herein are apparatus, systems and methods useful in forming vertical structures.

Described herein are apparatus, systems and methods useful in forming vertical structures.

A drilling machine (10) for making an excavation in ground (S) in a vertical drilling direction (F). The drilling machine (10) includes: a support (12) having a longitudinal direction (L); a drilling module (14) provided with cutter members (16), the drilling module being movable in translation relative to the support; and a movement device arranged between the support and the drilling module in order to move the drilling module (14) relative to the support along the longitudinal direction of the support. The machine is characterized by the fact that the movement device includes a damper (70) for damping the vibration generated by the drilling module while drilling.

A drilling machine (10) for making an excavation in ground (S) in a vertical drilling direction (F). The drilling machine (10) includes: a support (12) having a longitudinal direction (L); a drilling module (14) provided with cutter members (16), the drilling module being movable in translation relative to the support; and a movement device arranged between the support and the drilling module in order to move the drilling module (14) relative to the support along the longitudinal direction of the support. The machine is characterized by the fact that the movement device includes a damper (70) for damping the vibration generated by the drilling module while drilling.

Described herein are apparatus, systems and methods useful in forming vertical structures.

Described herein are apparatus, systems and methods useful in forming vertical structures.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

A portable cofferdam system for isolating a working area from water such as a culvert. The portable cofferdam system generally includes a first sidewall and a second sidewall each having an interior side, an exterior side, an upper edge, a lower edge and a rear edge. A middle wall is connected to the sidewalls opposite of the rear edges of the sidewalls forming a substantially U-shaped structure. An opening formed between the rear edges of the first sidewall and the second sidewall to allow for positioning about or near the inlet of an object or area to be kept dry such as the inlet of a culvert.

A method for constructing an assembled recyclable rectangular working well with preset detachable door openings comprises steps of: (I) designing according to functional requirements for a rectangular working well; (II) constructing by supporting piles; (III) installing prefabricated top beam; (IV) edge protection construction; (V) alternate construction of earthwork excavation, retaining slabs and internal support breast beams; (VI) installing the ladder entering the rectangular working well; (VII) rectangular working well back cover; (VIII) demolition of the detachable subsection support piles in the door part and completing the construction of the assembled recyclable rectangular working well in the preset detachable door hole; (IX) after the operation in the well is completed, during the backfilling process of the rectangular working well, gradually recovering the working well components such as the retaining slab, the internal support girder, the prefabricated crown beam and the supporting piles.

An excavation support system and methods for making same. The system can include a plurality of linear slide-rail posts; a plurality of corner slide-rail posts; at least one slide-rail panel having opposing first and second ends, wherein the first end is disposed within the recessed groove of the linear slide-rail post and the second end is disposed within one of the recessed grooves of the corner slide-rail posts; at least one linear roller cart, having at least one roller attached thereto, adapted to slide onto the linear slide-rail post and secure thereto, the linear roller cart comprising a generally horizontal plate for supporting at least one hydraulic brace leg; and at least one corner roller cart having at least one roller attached thereto, adapted to slide onto the corner slide-rail post and secure thereto. Each cart having a generally horizontal plate for supporting at least one hydraulic brace, and movable in an upward and downward direction relative to the vertical axis of the slide-rail post.