Earth Retention
Earth retention takes several forms, subject to the purpose intended, and generally comprises of a combination of a structural wall and lateral restraint. The intent is normally either to facilitate excavation or to stabilise a slope following excavation. The choice of retaining system is driven by technical requirements such as the flexibility of the structure, the displacement that is tolerable and the cost of installation. The lateral restraint can be provided by tie-back anchors or soil nails or alternatively by propping from the structure designed for the excavation.
For cuts on road or rail alignments, stabilisation of the cut faces, shotcreting in conjunction with soil nailing or rock bolting offers an economical solution.
The range of methods offered by Menard Bachy:
Structural walls:
- Secant Pile Walls
- Diaphragm Walls
- Shotcrete facing to slopes stabilised by Soil Nails
- Soil Nails Walls
Lateral restraint:
- Rock Anchors
- High Capacity Soil Anchors (SBMA)
- Ground Anchors
- Active and Passive Soil Nails
Objectives:
- Create safe environment to facilitate excavation
- Prevent risk of damage to adjacent property
- Stabilisation of the faces of excavated cuts
