A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
A Technical Guide for Assessment, Setting Up, and Protection of Rockbolts for Hydroelectric Facilities
Hydro-Quebec owns more than 680 dams and dykes, and a large number of appurtenant structures such as powerhouses, spillways, and water intakes distributed among 100 hydroelectric installations. Such large structures require deep surface and underground rock excavations coupled with rock reinforcement systems that insure stability and safety. The geological context for most of these hydroelectric installations requires ground support design, which mainly relies on permanent mechanically anchored rock bolts, fully grouted after installation. Over the years visual inspections revealed noteworthy corrosion on visible parts of rock bolts in delimited areas. The purpose of this paper is to present the results of an industrial research project initiated to investigate the extent of corrosion, its effect on bolt serviceability, and possible causes of premature rock bolts aging in a hydroelectric setting. This paper will present the importance and benefits of rock bolt environmental characterization, selection of suitable corrosion protection, and implementation of selected protection. The outcomes of this research served for the development of a technical guide to be used for inspection and maintenance.
A Technical Guide for Assessment, Setting Up, and Protection of Rockbolts for Hydroelectric Facilities
Hydro-Quebec owns more than 680 dams and dykes, and a large number of appurtenant structures such as powerhouses, spillways, and water intakes distributed among 100 hydroelectric installations. Such large structures require deep surface and underground rock excavations coupled with rock reinforcement systems that insure stability and safety. The geological context for most of these hydroelectric installations requires ground support design, which mainly relies on permanent mechanically anchored rock bolts, fully grouted after installation. Over the years visual inspections revealed noteworthy corrosion on visible parts of rock bolts in delimited areas. The purpose of this paper is to present the results of an industrial research project initiated to investigate the extent of corrosion, its effect on bolt serviceability, and possible causes of premature rock bolts aging in a hydroelectric setting. This paper will present the importance and benefits of rock bolt environmental characterization, selection of suitable corrosion protection, and implementation of selected protection. The outcomes of this research served for the development of a technical guide to be used for inspection and maintenance.
A Technical Guide for Assessment, Setting Up, and Protection of Rockbolts for Hydroelectric Facilities
Fréchette, Valérie (author) / Potvin, Estelle (author) / Quirion, Marco (author)
Geo-Congress 2023 ; 2023 ; Los Angeles, California
Geo-Congress 2023 ; 22-34
2023-03-23
Conference paper
Electronic Resource
English
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