Rockfall Netting for Mine Portal
What is a mine portal: A “mine portal” represents the immediate area surrounding the entrance of an underground mine excavation from “surface” leading up to a tunnel or adit. However, tunnels and adits may also be excavated from the bottom of a vertical mine shaft. Mine portals are usually “driven-in” a few benches from surface
Types of Rockfall Netting
Rockfall refers to quantities of rock falling freely (uncontrolled) from a natural slope or man-made excavation. The term is also a synonym for collapse of rock from an underground mine roof or open pit mine high-wall, also known as fall of ground. Rockfalls are also major hazard in excavations for highways and railways in mountainous terrain. A
Wire Mesh Lacing for Rockfall Protection
Wire-Mesh Lacing for Rockfall Protection Rockfall refers to quantities of rock falling freely (uncontrolled) from a natural slope or man-made excavation. The term is also a synonym for collapse of rock from an underground mine roof or open pit mine high-wall, also known as fall of ground. Rockfalls are also major hazard in excavations for highways and
Rockfall Drapery Installation on Challenging Slopes
Rockfall Drapery Mesh Installation on Challenging Slopes Installations of rockfall drapery systems are never easy; and never the same. Each project has a different set of challenges, with slope conditions and access to the slope as major factors. Hoff Geotechnik was recently appointed to install drapery mesh systems on a tricky slope along a railway
Cost of Rockfall Scaling
Rockfall scaling ranges from simple scaling of loose rock mass with hand-held tools such as “gwala” to more advanced processes such as the sensitive blasting with low energy rock-breaking cartridges. Rockfalls presents major hazards in excavations for open pit mines, highways and railways in mountainous terrain. A rockfall event is generally initiated by climatic and
Rockfall Scaling Techniques
Rockfall scaling ranges from simple scaling of loose rock mass with hand-held tools such as “Gwala” to more advanced processes such as the sensitive blasting with low energy rock-breaking cartridges. Rockfalls presents major hazards in excavations for highways and railways in mountainous terrain. A rockfall event is generally initiated by climatic and biological event that
About Rockfall Hazard Mitigation
What is Rockfall Hazards Mitigation? Definition: Rockfall refers to quantities of rock falling freely (uncontrolled) from a natural slope or man-made excavation. The term is also a synonym for collapse of rock from an underground mine roof or open pit mine high-wall, also known as fall of ground. Rockfalls are also a major hazard in excavations for
Rockfall Protection: Design Considerations
We often find that suitable rockfall protection designs are overlooked as the mitigation comes as an emergency when time and money is limited. However, even with limited time and money, the designer must ensure that the rockfall protection system is fit for the purpose. But what goes into a comprehensive design? It first starts with
Blasting Methods to Minimise Rockfall in Open Pit Mines
Blasting Methods to Minimise Rockfall in Open Pit Mines Most of the large open pit mines employs only one type of blasting method: This is known as Production Blasting. Mines that have a high consequence for rockfall usually employ three additional blasting methods: Pre-split and Trim Blasting. Production blasting: the main aim of this method
- Published in Rockfall
