News

News, announcements, policy updates, spotlighted websites, software updates and other info that may be of interest to practicing geotechnical engineers, engineering geologists, geophysicists, hydrogeologists and related professions.

Project Related

Devil’s Slide Tunnel, Project Updates and Geotechnical Info

June 10, 2008 rockman Comments Off on Devil’s Slide Tunnel, Project Updates and Geotechnical Info

Devil’s Slide is an infamous landslide along California’s Highway 1 or Pacific Coast Highway near Pacifica, just south of the San Francisco Bay area. Caltrans’ Devil’s Slide Tunnel project is an effort to bypass that slide and make the heavily traveled roadway safe for drivers and to eliminate the maintenance and traffic hassles caused by slope failures blocking the road. We first covered the project back in September of 2007 when the tunnel portion of the project commenced. In that post, you can find a Google Earth KML File showing the location of the tunnels and the new bridges associated with the project. In this post, I’ll provide you with some updated progress information as well as some background on the geotechnical and other aspects of the project. More links and videos are at the end of the post.  (Photo by Kim Komenich, San Francisco Chronicle). […]

Press Releases

Yucca Mountain Moving Forward

June 5, 2008 rockman Comments Off on Yucca Mountain Moving Forward

US Nuclear Regulatory Commission – No. 08-106 – June 3, 2008

NRC RECEIVES DOE’S LICENSE APPLICATION TO CONSTRUCT HIGH-LEVEL NUCLEAR WASTE REPOSITORY AT YUCCA MOUNTAIN

The Nuclear Regulatory Commission received an application today from the U.S. Department of Energy for a license to construct the nation’s first geologic repository for high-level nuclear waste at Yucca Mountain, Nev.

“We are ready to get to work on this challenging review,” said NRC Chairman Dale E. Klein. “Congress has given the NRC a strict timetable for reviewing this application, and I want to assure the American people that we will perform an independent, rigorous and thorough examination to determine whether the repository can safely house the nation’s high-level waste. The NRC’s licensing decision will be based entirely on the technical merits.” [Editor] Read on for the rest of the press release [/Editor]

 

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Press Releases

AMEC To Acquire Specialist U.S. Environmental and Geotechnical Consultancy

June 5, 2008 rockman Comments Off on AMEC To Acquire Specialist U.S. Environmental and Geotechnical Consultancy

Plymouth Meeting, Pa. USA (June 4, 2008) AMEC, the international engineering and project management company, announces today that it has reached agreement to acquire Geomatrix Consultants, Inc. (Geomatrix) from its owner-managers for US$85 million. [Editor] Read on for the entire press release. [/Editor]

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Miscellaneous

Dr. Jorj O. Osterberg – In Memorium

June 3, 2008 rockman Comments Off on Dr. Jorj O. Osterberg – In Memorium

Dr. Jorj O. Osterberg, inventor of the Osterberg Cell or "O-Cell" used for drilled shaft load tests has passed away at the age of 93.  According to the Association of Drilled Shaft Contractors or ADSC, he died peacefully in his sleep on June 1, 2008. The geotechnical community has lost a truly legendary figure in our field.

Osterberg held degrees from Columbia, Harvard and Cornell Universities. He was a Professor Emeritus from Northwestern University. He was a former Chairman of the Soil Mechanics and Foundation Division of the ASCE, an Honorary Member of ASCE, and a member of the National Academy of Engineering.  He delivered the Terzaghi Lecture in 1985, and later received the Terzaghi Award.  He was one of the last surviving founding members of the International Society of Soil Mechanics and Foundation Engineering. He received the Distinguished Service Award from the Deep Foundations Institute and the Lifetime Achievement Award from the Association of Drilled Shaft Contractors. (Adapted from a bio for the 2001 Burmister Lecture, Department of Civil Engineering and Engineering Mechanics, Columbia University). Read on for more.

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Project Related

Remediation begins on Center Hill Dam, Tenn.

June 3, 2008 rockman Comments Off on Remediation begins on Center Hill Dam, Tenn.

LANCASTER — Months of explosive blasting are expected to begin at the site of Center Hill Dam next week as the U.S. Army Corps of Engineers prepares to begin construction work at the aging dam in Lancaster.

[snip]

"The blasting will be to excavate a platform for construction, about 40 feet wide and will look similar to a road cut through a hill," [Corps Project Manager Linda Adcock] said. "Just the nature of how we grout, and moving equipment back and forth on the current slopes, which are as much as 40 percent and greater, is just really difficult. So for these reasons, for safety, quality, the accuracy and the consistency of the drill holes are much better done from a platform, they proposed this road cut type of a platform."

The drilling is for grouting remediation of the dam foundation. Story from Herald-Citizen, Cookeville, Tennessee.

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Failures

Drilled shaft rig falls into hole – Iowa

June 3, 2008 rockman Comments Off on Drilled shaft rig falls into hole – Iowa

On May 15 a drilled shaft rig operated by Mid America Drilling Corp was nearly swallowed by the 9-ft diameter hole it was drilling for a cell tower foundation near Harlan, Iowa. Fortunately nobody was injured and the truck did not suffer any significant damage.

In Arizona, the standard of practice is to use a temporary surface casing to prevent dangerous failures like that. I once saw pictures of a drilling contractor superindendent almost get sucked into a collapsing shaft, even with the temporary casing. Pretty scary stuff. Source: Harlan Tribune. (Photo by Samantha Bruck) 

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Project Related

New Tunnel Project In Peru Through Andes

May 30, 2008 rockman 13

From ENR:

In the mountains of Peru a tunnel-boring machine named “Pacha Mama” is grinding through the heart of the Andes under rock as deep as 6,890 ft. It is carving away at a 20.2-kilometer-long tunnel through the South American Continental Divide to deliver water to arid coastal farmland.

This is a really interesting project, known as the Los Olmos project, and a nice little article. Normally for a civil tunnel project you drill geotechnical holes beforehand to know what kind of material you’re dealing with. In this case, because of the depth, they don’t have that luxury, so all decisions will be made on the fly. The depth of the tunnel creates some very challenging rock mechanics and logistics problems as well! (Illustration by Odebrecht)

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Software Updates

Embeded Google Earth in Web Pages

May 30, 2008 rockman Comments Off on Embeded Google Earth in Web Pages

Google has just released an API, or application programmer’s interface for Google Earth that allows website developers to embed a google earth application in any website. Users will have to have Google Earth installed on their systems and they will need a plugin which aside from a browser restart, installs rather painlessly. So now instead of seeing a Google map embedded on a web page, you will start seeing an instance of Google Earth so you can pan around in 3D. Pretty Cool. Check out an example and some video from Google after the break.

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Geologic Hazards

Sidoarjo Mud Volcano 2 year Anniversary

May 30, 2008 rockman Comments Off on Sidoarjo Mud Volcano 2 year Anniversary

On May 29, 2006, the Sidoarjo mud volcano began erupting between 7,000 and 150,000 cubic meters of mud per day and it presently has no signs of stopping. A new report by scientists from Indonesia’s Institute of Technology Bandung and the UK University of Durham set to be published in the journal GSA Today confirms the early UN Report that an oil drilling rig was the cause of the disaster that has displaced an estimated 30,000 people. The report also indicates that the volcano, now named Lusi, could potentially collapse by as much as 146 meters (why not round that huh?). They say that the weight of the mud has already caused ground subsidence on the order of 14 meters near the center.

Images show the source of the mud flow, before and after. Acquired and processed by CRISP, National University of Singapore IKONOS image © CRISP 2004

Reuters story by way of Geology.com. See the University of Durham news release also. For a summary of the first year and the formation of the volcano, see my original post on the topic.

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