
{flvremote}http://media.timesfreepress.com/video/2009/11/Dan_Rockslide_STREAM.flv{/flvremote}
Video Source: Chattanooga Times Free Press.
{flvremote}http://media.timesfreepress.com/video/2009/11/Dan_Rockslide_STREAM.flv{/flvremote}
Video Source: Chattanooga Times Free Press.
Since 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.
Click through for the videos!
Folks in Oregon are angry about a recent landslide and debris flow that closed Highway 30 and destroyed property in the town of Woodson. (Here is a powerpoint presentation by Bill Burns of the Oregon Department of Geology and Mineral Industries showing how the event happened). Some rather stinging allegations are being made that politicians withdrew a landslide hazard map from general use in 2002 for political reasons. That map or another one had characterized the area effected by the December 2007 debris flow as a "very high" or "extreme" risk of landslides. A very interesting article.
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Thank you in advance for your quick answer !. Very nice post.