Heavy equipment refers to heavy-duty vehicles, specially designed for executing construction tasks, most frequently ones involving earthwork operations.They are also known as heavy machines, heavy trucks, construction equipment, engineering equipment, heavy vehicles, or heavy hydraulics.
6. Tunneling ROCK EXCAVATION HANDBOOK 220 221 Therefore, the position of the blastholes in the 1st square is expressed as: a = 1.5ø Where a = C - C distance between large hole and blasthole
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B. Back (1) - A plane of cleavage in coal, etc., having frequently a smooth parting and some sooty coal included in it. Back (2) - The inner end of a heading where work is going forward or is stopped.
Working models of the suberranean section of the Great Pyramid. A hydraulic pulse generator and water pump built with the subterranean chamber.
CECW-EG Engineer Manual 1110-2-2901. Department of the Army EM 1110-2-2901 30 May 97 U.S. Army Corps of Engineers Washington, DC 20314-1000 Engineering and Design TUNNELS AND SHAFTS IN ROCK
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.