UndergroundShotcrete: A Key to Advances in Safety and Productivity in Mining
J. Denis P. O'Donnell, Sr.
Read MoreIn 1969, when I bid farewell to work in field exploration, I knew I would miss the outdoors. I wasn’t sure if my love for geological mapping, and my penchant for using geophysical equipment to probe the earth for her riches, would be fulfilled. The
UndergroundShotcrete in North American Underground Mines: Yesterday, Today and Tomorrow
Mike Rispin and John Brooks
Read MoreCarl Akeley began the process of guniting, or what is now known as shotcreting, sometime around 1907. Since shotcreting subsequently found its way into underground 1uining operatio1t.s. ii has unc.lcrgone an evolution through the 20th CenÂtury Lo where we find the process being used today
UndergroundStructuralThe Use of Steel Fiber-Reinforced Shotcrete for the Support of Mine Openings
Marc Vandewalle
Read MoreWhat separates the support of mining openÂings from the support of similar civil engineering structures is the fact that mine openings have to survive large defonnations as a result of changing stress conditions induced by progressive mining. Steel fibers impart to concrete and shotcrete a
UndergroundStructuralSteel Fiber Reinforced Shotcrete, It is time to find out about it.
Mike Ballou
Read MoreIn an age when the building, tunneling, and in some areas, minÂing industry, is thriving in North America, we in the shotcrete industry should be looking for ways to increase productivity and save on ever-increasing labor costs. This type of thinking often requires the use
UndergroundStructuralInternationalMoab Khotsong Mine, A Mining Engineer’s Perspective on the Application of Steel Fiber Reinforced Wetcrete as a Support Medium in an Ultra Deep Level Mine, Part 1
Jon Buckley
Read MoreA Mining Engineer’s perspective on the Application of Steel Fiber Reinforced Wetcrete as a Support Medium in an Ultra Deep Level Mine.
UndergroundStructuralInternationalSteel Fiber Reinforced Shotcrete Replaces Cast Concrete Lining, World’s Longest Subsea Road Tunnel
Christine J. Hauck and John Peter Holtmon
Read MoreThe Northcape Tunnel in the Artic Circle in Norway was opened for traffic on June 15, 1999. The project is the longest subsea road tunneltunnel (6820 m or22,000 fl) in the world un1il 1999/ 2()0(). TheNorthcapc¢Tunnel is part of 1he FATIMAÂProject, (he road connection from
RepairUndergroundStructuralEvolution of Fiber Reinforced Shotcrete
Dr. Rusty Morgan and R. Here
Read MoreThe concept of reinforcing shotcrete with discrete, disominous steel fibers was developed by the Battelle Research Corporation in the USA in the early 1970s.
UndergroundShotcrete Design and Construction for the Stave Falls Project Power Tunnels
Paul Rapp
Read MoreBC Hydro has recently completed construction of a replacement power plant at Stave Falls, near Mission, British Columbia. Two new power tunnels were constn1cted to carry water from the intake to the new powerhouse. The crown, walls, and invert of the power tunnels were fully
UndergroundInternationalShotcrete for Underground Support in Brazil
Pedro Boscov
Read MoreShotcrete has been used in Brazil since the 1950s, mainly in minor works of slope stabilization and repairs in concrete structures. It was only in the 1960s that it started to be used in underground work. The Furnas Hydroelectric Project had some sections of its
UndergroundInternationalShotcrete Applications at Northparkes E26 Mine
Stephen Duffield, B.Sc.
Read MoreShotcrete was used extensively during construction of Northparkes E26 Underground Mine, Australia’s first block cave mine. Applications for the shotcrete included ground support, ground control, construction, safety, protection of equipment and remedial repairs. This article details the various uses for the 16,700 m3 (22,000 yd3)