Tunnel - Wikipedia
A tunnel is an underground passageway, dug through the surrounding soil/earth/rock and enclosed except for entrance and exit, commonly at each end. A pipeline is not a tunnel, though some recent tunnels have used immersed tube construction techniques rather than traditional tunnel boring methods.
Rock Drills | Furukawa Co.,Ltd.
We manufacture and distribute a wide range of products including tunnel drill jumbos which have been used for drilling a number of road and rail tunnels in the mountains, hydraulic breakers used for rock and concrete structure demolition, and crawler drills used to drill rock in civil engineering projects and open pit mining.
Tunnel boring machine - Wikipedia
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.They may also be used for microtunneling.
Gill Rock Drill - Official Site
World Class Rock Drilling Machine & Rock Drilling Equipment Supplier. Call 1-800-334-3117 today to speak with one of our expert consultants.
HPE are Suppliers and Manufacturers of Underground Mining ...
Hydropower as an energy medium, is the use of high pressure water (typically 100 bar – 250 bar) to power, drive and operate various items of equipment such as tunnel development drill rigs, reef boring drill rigs, ore pass development drill rigs, drain hole drill rigs, hand held rock drills, drifters, DTH hammers, monorail systems, rock ...
Tunnels and underground excavations | engineering ...
Tunnels and underground excavations: Tunnels and underground excavations, horizontal underground passageway produced by excavation or occasionally by nature’s action in dissolving a soluble rock, such as limestone.
Anwendungsbeispiele für Brokk Abbruchroboter
Blast hole drilling and anchoring. Brokk 180 with TEI hydraulic rock drill. Brokk 330M for scaling mounted on a GIA carrier. Underground digging in a narrow-vein gold mine.
Library | Bureau of Reclamation
Reclamation Library Glossary. Listed alphabetically below are definitions for terms commonly used by the Bureau of Reclamation. Clickable alphabet links have been provided at the beginning and end of the glossary to aid in searches.
Tunnel Update - October 2017 - Tunnel Business Magazine
Three times per year, TBM: Tunnel Business Magazine recaps the status of major tunneling projects underway in the United States and Canada. Below is the Tunnel Update that appeared in the October 2017 issue of the print edition.
Underground Drilling: Best Practice, Better Tools
Underground Drilling: Best Practice, Better Tools For both production and development drilling precision is crucial for blasting and drill string cost control is essential for good economy