News – Page 66 – GeoPrac.net

Ground penetrating radar (GPR) antenna mounted on a small tractor surveying near the Stonehenge monument as part of a larger project that identified a row of 90 previously undiscovered stones less than 3 km from Stonehenge.

GPR Used to Locate Possible ‘Superhenge’ Near Stonehenge

September 14, 2015 rockman Comments Off

Archaeologists using high-resolution ground penetrating radar (GPR) have located a massive collection of stones less than 3 km from the well-known Stonehenge site. This grouping of 90 stones, up to 4.5 meters tall (14.7 feet) […]

One of the final pieces of the Bertha TBM being lowered into place

Final three pieces of tunneling machine safely in the access pit

September 14, 2015 rockman Comments Off

The repaired cutterhead has been in the pit several weeks now, and the final three pieces of shielding for the Bertha TBM have been lowered into the access pit. Seattle Tunnel Partners team members will […]

Bertha TBM cutterhead being lowered back into access shaft

Tunneling machine’s front end bolted in place

August 31, 2015 rockman Comments Off

The troubled Alaska Way Viaduct Replacement Tunnel TBM known as Bertha has reached a milestone in its repair. The front cutterhead has been repaired, and has been lowered back into the access shaft to be […]

Florida Pool Pushed Out Of Ground After Heavy Rains

August 31, 2015 rockman Comments Off

The source website is calling this some kind of ‘reverse sinkhole’, which is definitely not the case. The article says there was a period of very heavy rain for about 11 days before this happened, […]

March 2015 Yeager Landslide and MSE Structure Failure

CRWV Airport Authority, Triad Answer Yeager Airport Landslide Complaint

August 18, 2015 rockman Comments Off

Plaintiffs whose homes were destroyed by the Yeager Airport Landslide in March of 2015 filed a suit naming Central Regional West Virginia Airport Authority and Triad Engineering as well as several others. The CRWVAA and […]

Geotechnical centrifuge at the UC Davis Center for Geotechnical Modeling

A Whole Lotta Shakin’ Goin’ On: Center for Geotechnical Modeling Facilitates Seismic Research

August 18, 2015 rockman 1

How would you feel if you were subjected to 75Gs of centrifugal force? Well, at least you would know what the soil feels like in some of the cutting edge geotechnical modeling being done at […]

Video of DeWind One Pass Trenching MT2000 Trencher Installing Soil Bentonite Cutoff Wall

August 4, 2015 rockman Comments Off

Modified from the YouTube description: Video of a DeWind One-Pass Trencher installing a Soil-Bentonite Wall 55′ deep. This is a mix in place technology capable of installations up to 125′ feet deep. The soils are […]

The next full-margin rupture of the Cascadia subduction zone will spell the worst natural disaster in the history of the continent.

The Earthquake That Will Devastate Seattle

August 2, 2015 rockman Comments Off

This is a fantastic article by Kathryn Schulz for New Yorker Magazine on the seismic and tsunami hazards associated with the Cascadia Subduction Zone in the Pacific Northwest. Ms. Schulz paints a very vivid picture […]

Proposed glass bridge in China's Zhangjiajie National Forest

The World’s Longest (and Scariest) Glass Pedestrian Bridge

July 31, 2015 rockman Comments Off

Check out this proposed bridge in China’s Zhangjiajie National Forest. It has a span of 1,200 feet and is over 1,300 feet off the ground. The majestic landscape was reportedly the inspiration for the Halleluja […]

GroundProve releases new SSR-FX in-pit radar

GroundProbe Releases New In Pit Radar

July 31, 2015 rockman Comments Off

GroundProbe has released a new slope stability monitoring radar for use in pit. The SSR-FX is designed to aid in increasing safety and productivity in mines. According to GroundProbe CEO John Beevers: “The SSR-FX is […]