The image of this failed bauxite tailings dam is very tragic and the pictures of the impact to the local town are very sad. But one thing that struck me about this particular image is how it appears that the failure occurred at the corner of the tailings impoundment. How many of us geotechnical engineers would have analyzed the corner? Most of the time you would pick a cross-section that appears to be conservative and go with that. Maybe you analyze both sides, but likely not the corner. I wonder what happened in this case…interesting. [Source: Dave’s Landslide Blog. Image: Dave’s Landslide Blog]
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Soledad Mountain Road Landslide Update
Residents of approximately 75 of the 111 homes evacuated after the slide have been allowed back into their homes. The City of San Diego is not wasting any time in determining the cause of the slide. The first of three 100-ft deep exploration shafts was excavated on Friday, and a Forensic Geologist from a firm hired by the City was sent down the hole to observe geology conditions and to locate the actual slip surface. Also, claims of leaking City water and/or sewer pipes prior to the failure have begun to surface. More details in the full post. (Photo by NELVIN CEPEDA / San Diego Union-Tribune)
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