presentation of mobile mapping pilot study · 2018. 4. 2. · mobile mapping pilot study inspecting...
TRANSCRIPT
Mobile Mapping Pilot StudyInspecting the Los Angeles River Levee
1
Orlando Lopes, EIT
Presentation of
Mobile Mapper
Periodic Inspections
Levee Embankment Rated Item1. Non-Compliant Vegetation Growth2. Sod Cover3. Encroachments4. Closure Structures5. Slope Stability6. Erosion/Bank Caving7. Settlement8. Depressions/Rutting9. Cracking10. Animal Control11. Culverts/Discharge Pipes12. Riprap Revetments and Bank Protection13. Revetments other than Riprap14. Underseepage Relief Wells/Toe Drainage Systems15. Seepage
Data Collection
Data Collection
Set-up, establishing controls (i.e. connecting to satellites), driving the levee at the riverside toe and on the crown, and system shutdown.
Details: Time: About 3.5 hours
Length of levee reach: Approximately 8 miles of levee (1 run on crown and 1 along riverside toe)
Average Travel Speed: Approx. 20 mph
Post-Processing the Data
Compiling, scanning through digital information, interpolating missing data, extraction, and noting/logging deficiencies along the levee
Details: Length: Approximately 2 mile reach
Time: Approximately 4-5 hours for the 2 mile reach
Tools/tricks: Reconciling the data, auto-populating log for large trees, floodwalls, cutting cross-sections, and creating models
Drive-through of results…
Drive-through of results…
Drive-through of results…
Drive-through of results…
Drive-through of results…
What we couldn’t see…
Summary (in terms of Periodic Inspection)
Challenges
Cannot capture certain items i.e. burrows along the toe, locations with limited access, deficiencies on steep slope, etc.
What worked well
Capturing the following types of deficiencies: vegetation, encroachments, and measurements (models/cross-sections).
Advantages
Time - (could capture up to 12-20 miles per day)
Safety - lowered risk of injury
Data can be viewed and assessed by multiple people at different times
Revisiting site conditions without field visit
