1. Rock Fall Protection At Mayo A Powerhouse with Yukon Energy
Yukon Engineering Excellence Award Nomination

2. Introduction
Mayo ‘A’ powerhouse is part of the Mayo Hydro facilities located 5 km north of the town of Mayo, Yukon, Canada. The facility is owned and operated by Yukon Energy Corporation.
Powerhouse was built in 1950s with minimal rock fall catchment.
60 years slope deterioration due to freeze/thaw processes.
Roof and northern wall of powerhouse had rock impacts in April
Yukon Engineering Award of Excellence Nomination

3. Risk Assessment
Risk assessment considered size, velocity, and accumulation of rock fall
Yukon Engineering Award of Excellence Nomination

4. Construction Overview
Rock fall & working area safety
– draped mesh installation
(Geobrugg Deltax G80/2 wire mesh)
Install catch fence using a high-line system 250 kJ rock fence (manufactured by Trumer Schutzbauten)
Yukon Engineering Award of Excellence Nomination

5. Construction & Completion Overview
Final installation of fence protects powerhouse from rock fall hazards
Scaling above powerhouse
(using construction chute)
Before and after
Case Study: Rock Slope Remediation at Mayo ‘A’ Powerhouse, Yukon, Canada