Soil nail walls & rock stabilisation

Reliable stability with soil nail walls and rock protection

The principle of soil nail walls is that the visible surface of the excavation support is provided with a reinforced shotcrete shell and this is anchored to the ground by means of rod-shaped reinforcement elements (injection drill anchors) drilled into the natural soil.

Implementation of soil nail wall

The embankment, which is exposed in sections, is secured with reinforced shotcrete. The nails are then drilled and grouted. After hardening, the nail head is fitted and the nail is tightened.

Rock stabilisation

Both injection anchors and GEWI anchors can be drilled and installed at heights of up to 40 metres using a specially constructed drilling rig. These anchor the high-performance net to the rock face. Manual drilling rigs with a separate hydraulic unit are used at great heights and in high alpine areas.

Examinations

Shotcrete tests
Pull-out tests with IBO anchors

Applications

Securing terrain elevations and securing excavation pits
Securing embankments at risk of slipping
Slope stabilisation for roads or railway lines

Technical data

Shotcrete	using the dry or wet shotcrete method
High-performance nets	Various types of rockfall protection nets
Nagelraster	according to static requirements (e.g. 1.50 m x 1.50 m)
Nail forces	100 to 250 kN Working load
Equipment	for soil nail wall: Crawler drilling rig up to 8 tonnes