tdot rockfall management system saieb haddad geotechnical engineer geotechnical engineering section...
TRANSCRIPT
![Page 1: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/1.jpg)
TDOT Rockfall ManagementSystem
Saieb Haddad
Geotechnical Engineer
Geotechnical Engineering Section
Tennessee Department of Transportation
![Page 2: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/2.jpg)
Old Approach: Falling Rock signs
![Page 3: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/3.jpg)
History/Background
• Most of the “Easy” routes have been developed.
• Meanwhile, the previously lightly traveled, more challenging routes have seen increased traffic.
• In addition, weathering of rock slopes along existing routes continues…
![Page 4: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/4.jpg)
New Approach:
• Develop a systematic method of identifying and repairing problem slopes.
![Page 5: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/5.jpg)
Tennessee RMSDeveloped as a collaboration between TDOT, the
University of Tennessee, and Virginia Tech
![Page 6: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/6.jpg)
Research Project Goals
Identify Hazardous Sites Develop a Rockfall Hazard Rating System
Statewide Coverage of TDOT Roadways
Ability to prioritize remediation
Inclusion of photos
Database and GIS System
![Page 7: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/7.jpg)
Hazard Rating Components• Slope height• Ditch effectiveness• Average Vehicle Risk (AVR)• Roadway Width• Decision Site Distance (%DSD)• Geologic characteristics
(Structural/weathering modes)• Block size/volume per event• Presence of water on slope• Rockfall history
![Page 8: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/8.jpg)
Rockfall Hazard Management System Training Manual
![Page 9: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/9.jpg)
Rockfall Hazard Rating System
![Page 10: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/10.jpg)
Preliminary Ratings:
A – High Hazard
B – Moderate Hazard
C - Low Hazard
![Page 11: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/11.jpg)
Failure Modes
• Planar Sliding• Wedge Sliding• Toppling• Differential Weathering• Raveling
![Page 12: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/12.jpg)
Planar Sliding
![Page 13: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/13.jpg)
Wedge Sliding
![Page 14: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/14.jpg)
Toppling
![Page 15: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/15.jpg)
Differential Weathering
![Page 16: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/16.jpg)
Raveling
![Page 17: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/17.jpg)
RMS WebMap Application
![Page 18: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/18.jpg)
There are just under 2000 A and B SitesApproximately 49% are A Sites
![Page 19: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/19.jpg)
Remedial MeasuresOften used in combination
• Removal – Blasting, scaling, trimming• Restraint – High capacity anchors, rock
bolts, anchored wire mesh, retaining walls• Containment – High energy fencing• Control – Draped wire mesh• Widening of ditch/catchment area
![Page 20: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/20.jpg)
RemovalBlasting
![Page 21: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/21.jpg)
RestraintHigh Capacity Anchors
![Page 22: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/22.jpg)
RestraintBolts/Dowels
![Page 23: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/23.jpg)
Pile and Lagging WallRock Socket Drilling
![Page 24: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/24.jpg)
RestraintPile & Lagging Wall
![Page 25: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/25.jpg)
Pile and Lagging WallLagging in Place
![Page 26: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/26.jpg)
ContainmentHigh Energy Fencing
![Page 27: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/27.jpg)
ControlWire Mesh Drape
![Page 28: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/28.jpg)
Catchment Area/Ditch Improvement
![Page 29: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/29.jpg)
Challenges
• Developing/selecting the most cost-effective remedial measures (maintaining traffic is a critical factor).
• Producing construction plans/contract documents
• Funding• Keeping database up-to-date
![Page 30: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/30.jpg)
Civil Engineers, Infrastructure, Highways, and Public Safety
• Highway Engineers traditionally have needed a working knowledge of route geometry/surveying, construction methods, structural design, hydraulics, hydrology, soils and materials.
![Page 31: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/31.jpg)
Return to office or laptop
Data synchronization
Database & GIS interface
Field datacollection
QA/QC
![Page 32: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/32.jpg)
Technical Response
![Page 33: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/33.jpg)
Rock Fall/Rock Slide reported to the Geotechnical Staff
![Page 34: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/34.jpg)
![Page 35: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/35.jpg)
• Site inspection.• Stability assessment.• Highway closure or maintain partial traffic (important decision).
• Geotechnical Investigation and Analyses.(could include drilling and testing).
• Perform repair design and contract document/ emergency contract.
![Page 36: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/36.jpg)
Contractors Prequalification
![Page 37: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/37.jpg)
Award Contract Start Construction
![Page 38: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/38.jpg)
Skilled labor
![Page 39: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/39.jpg)
Roadway closed due to traffic safety and work space.
![Page 40: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/40.jpg)
![Page 41: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/41.jpg)
![Page 42: TDOT Rockfall Management System Saieb Haddad Geotechnical Engineer Geotechnical Engineering Section Tennessee Department of Transportation](https://reader035.vdocuments.mx/reader035/viewer/2022062221/56649d055503460f949d882e/html5/thumbnails/42.jpg)
The end