8. lvrm ch11 ukraine slope stabilization 60 min
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Transcript of 8. lvrm ch11 ukraine slope stabilization 60 min
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Gordon R. Keller, PE, GEGordon R. Keller, PE, GEGeotechnical EngineerGeotechnical [email protected]@fs.fed.us
[email protected]@gmail.com
Slope StabilizationSlope Stabilization
Rural Roads Educational Webinar SeriesRural Roads Educational Webinar Series
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Slopes and SlopeSlopes and Slope StabilizationStabilization
• Avoiding Unstable AreasAvoiding Unstable Areas• Preventing InstabilityPreventing Instability• Stabilizing SlidesStabilizing Slides
• Stabilization AlternativesStabilization Alternatives
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Mike Long
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Slide Recognition and Avoidance Slide Recognition and Avoidance
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Slide PreventionSlide Prevention
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Cut SlopesCut Slopes
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Fill SlopesFill Slopes
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Nearly Vertical CutsNearly Vertical Cuts
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Slope Stabilization AlternativesSlope Stabilization Alternatives
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Assessment of Risks Involved•Hazard, or Likelihood of Failure•Consequences of Failure/Values at Risk (Infrastructure and Environment)
Range of Management Options•Do Nothing or Adapting to Slide•Move Facilities, Protection Measures•Stabilization Measures
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Stabilization Measures(What is adequate and cost-effective)
•Maintenance--Slide Removal•Use of Vegetation, Drainage•Slope Modification•Gabions, Small Walls, Buttresses•Reinforced Fills, Deep Patch Repairs•Designed Retaining Structures•Piles, Anchors, Soil Nails, Etc.
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Use of Vegetation for Slide Prevention Use of Vegetation for Slide Prevention and Slope Stabilizationand Slope Stabilization
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D. Gray
R. Sotir
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Soil bioengineering Soil bioengineering andand
biotechnical slope biotechnical slope stabilizationstabilization
R. Sotir
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J. McCullah
R. Sotir
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Surface andSurface and subsurface subsurface
drainagedrainage
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C. Gillies
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Rock Cuts & Rock Fall Problems
CDOT
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Flattening or reshaping over-steep Flattening or reshaping over-steep failing failing slopesslopes;
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Fill Slope StabilizationFill Slope Stabilization
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Placement of Waste Material
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Bad Disposal Sites
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OK Disposal AreasOK Disposal Areas
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ReinforcedReinforced FillsFills
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Deep PatchDeep Patch
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Retaining WallRetaining Wall
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MSE WallsMSE Walls(MechanicallyStabilized Earth)(MechanicallyStabilized Earth)
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MSE WallsMSE Walls
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Soil Nail LauncherSoil Nail Launcher
Bob Barrett
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GRS Bridge AbutmentsGRS Bridge Abutments
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FHWA GRS Integrated Abutment Design(Bowman Road Bridge, Defiance Co. Ohio)
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-TRB SR 247- Landslides- Investigation and Mitigation
-USFS- Slope StabilityReference Guide
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Walls Need Good Foundations!!Walls Need Good Foundations!!
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Ed Rose
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Ed Rose
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SummarySummary• Use commonly stable cut and fill slope angles
• For failures, assess why a site failed
• Find the least expensive, effective stabilization measure
• Consider use of drainage and vegetation
• Use structures where necessary. Analyze and design significant structures!
• Place structures on a solid foundation
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Gordon Keller, PE, GEGordon Keller, PE, GEGeotechnical EngineerGeotechnical [email protected]@gmail.com