More Movement on La Jolla Landslide
Geologic Hazards
Landslide Causes Train to Derail into Mississippi River
Four engines pulling a freight train derailed July 9 and landed in the Mississippi River after hitting a landslide or major rockfall. The accident happened near Guttenburg in northeastern Iowa. Two workers on the train were injured, one was rescued by boat. The engines are now leaking diesel fuel and transmission oil into the river, but crews are on scene to attempt to contain the contamination which has apparently spread 5 miles downstream. Two ethanol tankers derailed as well but do not appear to be leaking. Several rail cars carrying grain have spilled also. There are 75 cars still on the track. Via Reuters and The Gazette (Cedar Rapids, IA). (Photo credit: Orlan Love/The Gazette)
Geologic Hazards
Devil’s Slide Repair and Tunnel Bypass Presentation
[Updated Thursday May 29, 2009 – 1:00 PM PDT] Added a photo of the AIS Kaiser S2 excavator (spider excavator), and added photos of the Devil’s Slide debris dump where they have put the landslide material removed and the material from the tunnel excavation. [/Update]
Grant Wilcox, Geology Branch Chief with CALTRANS Office of Geotechnical Design West gave a presentation on the Devil’s Slide repair along PCH Highway 1 at the Southwest Geotechnical Engineer’s Conference on May 12 in Phoenix. I’ve posted about the project here before. When I saw Mr. Wilcox, I knew he looked familiar but I couldn’t figure out why. At the beginning of his presentation he made light of his being on You-Tube…then it clicked! He gave a nice overview of the history of the failures, the geology, and the tunnel project. What follows are a few quick tidbits from his talk based on my notes. (Photo via Caltrans site).
Failures
Landslide Just Misses Viaduct Piers in Turkey
A major landslide was captured on video narrowly missing piers for a viaduct under construction at the Yusufeli Dam site in Artvin, Turkey. The slide appears to be on an engineered cut slope benched into […]