Soil Nailing PPT: Introduction, Techniques, Types, Applications

Soil Nailing PPT: Introduction, Techniques, Types, Applications

Soil nailing is a technique for strengthening soil and making it more stable. It’s also used to make slopes, excavations, retaining walls, and other structures more stable.

Technique of Soil Nailing:

Soil is reinforced using slender materials such as reinforcing bars, sometimes known as nails, in this approach. These reinforcing bars are grouted after being placed into pre-drilled holes. Furthermore, these nails are put at a 10 to 20-degree angle to the vertical. Shotcrete, concrete, or other grouting materials are put to the excavation face as the excavation progresses to grout the reinforcing steel or nails.

Types of Soil Nailing:

  1. Soil nailing with drilled and grouted holes: In this approach, holes are drilled in naturally or excavated slope faces with drilling machines such as the Ak-10, and grouting materials (concrete, shotcrete) are put in these drilled holes with (100-200mm) diameter nails at 1.5m intervals.
  2. Soil nailing with a drive: Excavated slopes are temporarily stabilized as rapidly as possible using nails with a diameter of 19-25mm and spacing of (1-1.2m). This procedure does not guarantee that the reinforcement will be protected against corrosion (steels or nails).
  3. Soil nailing using self-drilling drills: With the filling of grouting materials, hollow bars are put into the slope surface. It is more corrosion-resistant and speedier than the drilled soil nailing method.

Applications of Soil Nailing:

  • Existing retaining wall stabilization
  • Excavating retaining structures for high-rise buildings and underground infrastructure in metropolitan environments.
  • Redemption from a landslide
  • Highway and roadway embankments, as well as cut slopes, must be stabilized.
  • Tunnel entrances in steep stratified slopes that are unstable
  • Abutments for bridges are being built and retrofitted.
  • Cutting stabilizations that are steep
  • Existing embankments that are too steep to be stabilized
  • Existing concrete structures can be made more stable in the long run without having to demolish and rebuild them.

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