A rockslide occurred last weekend in the Batseri, located in Northern India about 650 km north of New Delhi. The event was captured on several cell phone videos, but the one below is my pick for the most fascinating and terrifying. It shows several large rocks on the order of 5-6′ diameter at least that go airborne for a long-distance…right towards the videographer. One rock narrowly misses the abutment of a small bridge, and another one hits the bridge itself, bringing down the entire structure. The Landslide Blog has more details and links to some of the other videos. It’s not shown in this video, but apparently, 9 people were killed and three injured by this event when a tour bus was struck one or more rocks.
In case you missed the background on the Kilbuck Landslide (or here or here), it happened in Kilbuck Township, PA back in in September of 2006. To deal with the political hot potato and media nightmare, Wal-Mart bought out the developer on the unfinished property and began handling remediation of the slide itself. Now, it appears as if they want their money back from the developer! Read on for more details.
Last week was the annual American Council of Engineering Companies of Arizona Roads and Streets Conference in my home town of Tucson, Arizona. Its a transportation themed conference as you might guess, but there are usually a few geotechnical-type presentations. This year, there was an excellent presentation on the SR 87 Landslide that occurred about 1-year ago on the highway between Phoenix and Payson. The presentation was given by Keith Dhalen, PE with AECOM , Wayne Harrison, RG also with AECOM and Scott Neely, PE with Terracon . Read on for my recap of the presentation. (Photo by ADOT via AZGS)
The Devil’s Slide Tunnel project is on schedule and on budget according to a news story at ABC7News.com from earlier in June. The video (shown after the break) has a few nice shots showing rock bolting, soil nailing at the portals, and the geologic mapping and laser scanning that happens at the tunnel face.
I also came across a very neat article about how the Ocean Shore Railroad Company was the first to try to cut into the slope along what is now PCH 1 at the Devil’s Slide back in the early 1900s. They were trying to connect the then rural farming community of Half-Moon Bay with San Francisco. The railroad fought the reoccurring landslide and serious rockfalls. Ocean Shore Railroad went bankrupt in 1922 and pulled up its rails, making room for the current highway. (Photo at left from halfmoonbaymemories.com)