Soil Nail Wall Solutions for Stable Earth Retention
GFWA’s expertise in soil nail walls is demonstrated by numerous projects throughout Australia.
Soil Nail Walls: Perfect for slope stabilization and landslide prevention. This method ensures stable earth retention, ideal for protecting slopes and excavations.
Our processes
Stage 1: Site Preparation
The site is cleared, and the locations for soil nails are marked. Access for drilling equipment is ensured, and any obstacles are removed. The site preparation ensures that the area is ready for the arrival of drilling equipment.
Stage 2: Drilling
Holes are drilled at the specified angles and depths along the slope or excavation face. The drilling pattern and depth depend on the soil conditions and the design requirements. The drilling process must be carefully controlled to ensure proper positioning and depth.
Stage 3: Nail Installation
Steel bars (nails) are inserted into the drilled holes. The nails are typically made of high-strength steel and may be threaded for better grout bonding. The nails provide reinforcement to the soil, improving its stability and load-bearing capacity.
Stage 4: Grout Injection
Grout is injected into the drilled holes to bond the nails to the surrounding soil. Controlled flow and pressure are used to ensure uniform grout distribution. The grouting process must be monitored to ensure proper filling and strength.
Stage 5: Curing
The grout is allowed to cure and stabilize the soil nails. Proper curing is essential to achieve the desired strength and stability. The curing process is monitored to ensure the grout sets correctly and achieves the required properties.
Stage 6: Shotcrete Application
A layer of shotcrete is applied to the slope or excavation face to provide additional support and protection. The shotcrete forms a continuous cover, preventing soil erosion and providing a smooth surface. The shotcrete is applied in layers to ensure proper thickness and coverage.
Stage 7: Quality Control
The soil nails and shotcrete are inspected for alignment, depth, and structural integrity. Non-destructive testing methods such as pull-out tests or integrity testing may be used to assess the quality of the soil nails and shotcrete. Ensuring that the soil nail system meets all design and safety standards is essential for the success of the project.
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