Sinorock self drilling soil nail replaces a range of ground support systems

15/ago/2016 05:19:09 sinorocksoilnailing Contatta l'autore

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Soil nailing provides a cost-effective solution to many slope stability and earth retention problems. Mainly used on infrastructure widening schemes (highway, motorway and railway earthworks); the system can also be used to re-profile and steepen existing sloping sites where more traditional expensive retaining solutions may previously have been used.

Soil nailing is a technique that works by reinforcing and strengthening the existing ground. Each soil nail consists of a reinforcing bar that is generally made of steel (with full corrosion protection for permanent works) although self-drilling hollow bar soil nails can be installed where soil conditions allow.

Installed from the top down, the slope or required excavation is supported/stabilized by the soil nails being put into tension as the ground relaxes. To ensure no localised slippage of the earthworks face, a facing system is generally required which can comprise sprayed concrete or geo-mesh fabrics as necessary.

Soil nails bind the existing slope together so that the mass strength is utilized. When close spaced, the soil nails form a monolithic block which acts as a retaining structure. Simple and quick to install, and cheaper than external structural solutions such as retaining walls, soil nails cause minimal disturbance to the existing slope.

Soil nails are normally installed in conjunction with dressing of the slope surface, using netting, hydraseeding, seeded geotextiles or shotcreting. Once installed and grouted, usually a nominal 10% of the soil nails are tested to their design load following procedures laid down in BS8081.

Sinorock has introduced a new concept in ground reinforcement for tunnelling and underground mining applications that is faster and easier to install than traditional systems, while giving better, stronger ground support.

esigned and developed in China by Sinorock’s Newcastle-based Manager for Rock Reinforcement Development, Mrxu, the Sinorock self drilling soil nail replaces a range of ground support systems, including resin bolts, stiff splitsets, and even cable bolting in some instances.

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