GEOTECHNICAL

Swissboring Overseas Piling Corporation since its establishment in U.A.E. has made valuable contribution to the Geotechnical Industry in U.A.E. by managing almost 21 no. rotary drilling rigs of various capacities.

We have been actively engaged in the geotechnical works from single storey villas to high rise towers from drilling shallow depths to as deep as 100.0 m below ground level.

RETENTION SYSTEMS

Excavations are usually supported by reinforced bulkheads made of rectangular panels, or by ranks of piles. Rectangular panels can be executed by means of bentonite mud, through the excavation with buckets hydraulic or mechanic or by using hydrocutters.

Ranks of piles can be, in turns, made by means of traditional excavation techniques using drilling mud.

An advantageous alternative technique is the CSP ,Cased Secant Piles, which allows the execution of piles without drilling mud. This alternative offers organizational advantages for the site as well as lower costs due to the reduction of the material to be dumped.

Once the bulkhead is completed, tie rods can be installed to prevent its deformation during the excavation phases.

FOUNDATION ELEMENTS

In this field, SWISSBORING technological development is aimed at eliminating static bentonite muds commonly used for the support of the excavation in case of loose soils or soft cohesive soils.

The purpose of said elimination is to reduce the size of the site, and minimize the soil debris polluted by stabilizing slurries. The research led to the design of a new range of hydraulic drilling rigs through which it is possible to perform cased holes or shafts with diameters up to 60inch and to a max. depth of 131 ft.

Drill rigs are equipped with hydraulic clamps for the retrieval of the temporary casing once the concrete casting is completed

GROUND IMPROVEMENT

Various types of equipment can be used to perform deep mixing, but the technique essentially relies on mechanical means to create an in situ mixture of soil and grout.

This can create continuous vertical barriers, reinforced if needed by the insertion of H beams at preset intervals or it can form cells of treated soil to avoid liquefaction to create gravity structures or to improve the overall characteristics of a soil mass.