Congratulations to SAGE Principal Geologist Drew Kennedy and PG&E Principal Geotechnical Engineer Bob McManus whose paper, Geological and Geotechnical Considerations for Condition Assessments of Unlined Spillways in the Sierra Nevada, California, will be presented at the ASDSO Dam Safety conference in Seattle.
The paper focuses on unlined or partially-unlined spillways in hard rock that are generally assumed to be problem-free, but can contain weaknesses that may make them susceptible to erosion during spillway flows. The locations of these potential weaknesses are often predictable using basic concepts of engineering geology and rock mechanics. The goal of the paper is to provide spillway assessment teams a better understanding of how these weaknesses may affect the spillway, the locations where these weaknesses are more likely to occur, patterns that indicate past or potential spillway degradation, and where mitigation measures may be needed. The abstract is available here.
There will be plenty to talk about during the conference. Be sure to stop booth #602 and join the conversation with SAGE.