Soil nail walls & rock stabilisation
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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 and rock stabilisation
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 |
| Nail grid | 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 |
Learn more about special foundation engineering processes
Anchors
Soil mixing method
Ground improvement
Ductile piles
Jet grouting method
Large bored piles
Grouting
Micropiles
Diaphragm walls
Membrane walls
Special technology
Sheet-pile walls
Dewatering
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