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Innovative Soil Nailing & Soil Nail Monitoring
Nate Beard, P.E. Soil Nail Launcher, Inc.
Merged to form GeoStabilization International
Overview
• Innovative Soil Nailing
– Launched Soil Nails
– Soil Nail Configurations
• Piling Wall Replacement Alternative
• Roadway Stabilization & Widening Alternative
• Soil Nail Monitoring
– Hyalite Canyon, MT
Compressed Air
Original vessel developed by the British during war time.
Breech Valve
Interstate 75
Hyalite Canyon, Gallatin NF
Project Location
• Slide was triggered in 2007
– Part of an old (geologic) bedrock slide with shallow infinite slope failure
– Most recreated Forest Service area in the region. Material moved every spring
Soil nail the active portion of the slope near the top.303 hollow bar soil nails (HBSN)65 micropiles
Geosynthetic Reinforced Soil (GRS) wall constructed at the bottom for debris catchment purposes.
Monitoring
• 5 Load Cells
• 2 Piezometers– 15’ and 24.5’ below grade
• 2 Slope Inclinometer Casings– Each 40 feet below grade
– Require use of external slope inclinometer torpedo
• Able to take remote readings from the load cells and piezometers