People interested in one of the big geological uncertainties that could affect the Muskrat Falls dam will have a chancer to hear from an international expert later this month.
Dr. Stig Bernander,an international expert on quick clay landslides, will deliver a public talk at the LSPU Hall, on Victoria Street, St John’s at 8 pm Thursday, October 30th. He will discuss quick clay landslides with particular attention to the North Spur, a key feature of the Muskrat Falls dam project.
Quick clay is clay material deposited under marine conditions upwards of 20,000 years ago. Exposure to rain coupled with a barely perceptible upward pressure can cause quick clay to liquefy. The North Spur at Muskrat Falls contains quick clay .
The North Spur is a one kilometre long strip of land that Nalcor plans to use as a natural dam to hold back the Muskrat Falls reservoir. Failure of the North Spur would catastrophically release all the water in the reservoir and inflict serious downstream damage on Happy Valley/Goose Bay and Mud Lake while essentially wiping out the Province’s Muskrat Falls investment.
Bernander’s visit is being organized by a local concerned citizens group.
Bernander was a chief design engineer for Skanska West, a large international design and construction company based in Sweden with worldwide operations. His ground-breaking research on quick clay led to the development of an updated method for assessing quick clay stability under different conditions. His first publication on brittle slope failures was printed 1978 and his calculation method was gradually developed in the years 1981 to 1989.
From 1980 to 1998, Bernander served as a part-time adjunct professor at Luleå Technical University as well as simultaneously heading the Skanska West Department for architecture and engineering design.