Gord McKenna: geotechnical engineer, landform designer, & photographer
Welcome to the personal web page of Gord McKenna, Principal Geotechnical Engineer with BGC Engineering in Vancouver, Canada and Adjunct Professor at the University of Alberta. I love to build mining landforms and reclaimed watersheds and I’m hoping you’ll contact me so we can talk about your experience or about areas that we might be able to collaborate. Check out our BGC Engineering website and the University of Alberta website.
RECENT ENGINEERING NEWS: Six papers written with my colleagues in 2016…
Ansah-Sam M, Hachey L, McKenna G, & Mooder B. 2016 The DBM approach for setting engineering design criteria for an oil sands mine closure plan. Fifth International Oil Sands Tailings Conference, December 4-7. Lake Louise, Alberta. University of Alberta Geotechnical Group, Edmonton. 11p.
Aubertin M & McKenna G. 2016. Tailings Disposal Challenges and Prospects for Oil Sands Mining Operations. Geo-Chicago 2016: Geotechnics for Sustainable Energy. Aug 14-18. Chicago. p359-371.
Cassie J & McKenna G. 2016. Mine closure planning, design and implementation: from hand-waving to reality. Planning for Closure 2016: First International Congress on Planning for Closure of Mining Operations. Santiago, Chile. November 20-22. Gecamin. Santiago. 9p.
McKenna G, Mann V, Fisseha B, Beier N, & Olmedo N. 2016. The geotechnical vane strength of soft tailings compared to soft foods. Fifth International Oil Sands Tailings Conference, December 4-7. Lake Louise, Alberta. University of Alberta Geotechnical Group, Edmonton. 11p.
McKenna G, Mooder B, Burton B, & Jamieson A. 2016. Shear strength and density of oil sands fine tailings for reclamation to a boreal forest landscape. IOSTC International Oil Sands Tailings Conference. Lake Louise. Dec 4 to 7. University of Alberta Geotechnical Group. Edmonton.
McKenna G, Straker J, & O’Kane M. 2016. Custodial transfer of reclaimed mines: barriers and opportunities. TRCR 40th Annual BC Mine Reclamation Symposium. Penticton, BC, Canada. Sept 2016. 12p.
We’re quite proud of the new graph above which shows the typical range of oil sands fine tailings shear strengths as a function of solids content (a measure of saturated density). The graph is based on publicly available data, most of which is based on the laboratory vane shear strength. Peak undrained shear strengths and densities are highly correlated, but for any given density, there can be plus or minus one order of magnitude scatter to the shear strength data density tailings treated with additives, such as coagulants, flocculants, and cements, will have considerably higher shear strengths than untreated tailings. The relationship between the shear strength and density is largely explained by liquidity index (the lavender lines from Houston and Mitchell (1969) adapted for oil sands tailings).
RECENT PHOTOGRAPHY NEWS: Photos from recent trips….