J. Michael Duncan, Virginia Tech
Conferences

Day 2 Geo-Congress Notes

As I gear up for another great day of technical talks, networking and wonderful San Diego weather, here are a few thoughts from yesterday at Geo-Congress 2013. The morning started with two great keynote lectures.  […]

US89DrillingYouTubeThumb
Geologic Hazards

US 89 Bitter Springs Landslide Video Updates

US89DrillingYouTubeThumbSince I last posted about this landslide, ADOT has added several videos to their YouTube channel.  It’s clear that this highway is going to be closed for the long term.  ADOT and their on-call geotechnical consultant tasked with this project, Kleinfelder, are currently drilling boreholes to attempt to characterize the failure surface and determine what the geometry of the failure surface is.  They are installing at least 10 inclinometers to try to determine the location of the slip plane or planes at depth and they have two extensometers to measure if any additional movement occurs.  They are also performing LIDAR surveys as well. Check out the videos below.

Initial ADOT Video Describing the Failure

Click through for the videos!

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Naval Facilities Engineering Command or NAVFAC
Project Related

NAVFAC Southwest Awards $4.5 Million Contract for Geotechnical Engineering Service

Naval Facilities Engineering Command (NAVFAC) Southwest awarded RORE Inc. an IDIQ contract worth $4.5 million for geotechnical consultation, subsurface investigation, and material testing for various projects. NAVFAC Southwest’s area of responsibility includes California, Arizona, Colorado, […]

Pyrite from Ampliación a Victoria Mine, Navajún, La Rioja, Spain
Geologic Hazards

Irish homeowners hopeful of pyritic heave solution

The National Standards Authority of Ireland (NSAI) has released a new standard regarding testing, categorization and remediation of pyritic backfill materials. These materials have finely disseminated reactive pyrite within the material, typically from quarry waste. […]