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  2. Soil nailing - Wikipedia

    en.wikipedia.org/wiki/Soil_nailing

    Solid bars are usually installed into pre-drilled holes and then grouted into place using a separate grout line, whereas hollow bars may be drilled and grouted simultaneously by the use of a sacrificial drill bit and by pumping grout down the hollow bar as drilling progresses. Kinetic methods of firing relatively short bars into soil slopes ...

  3. Digging bar - Wikipedia

    en.wikipedia.org/wiki/Digging_bar

    Using digging bars to move rocks A girl and a man dig a hole with a heavy digging bar to plant a tree. Common uses of digging bars include breaking up clay, concrete, frozen ground, and other hard materials, moving or breaking up tree roots and obstacles, and making holes in the ground for fence posts.

  4. Drill cuttings - Wikipedia

    en.wikipedia.org/wiki/Drill_cuttings

    Drill cuttings [1] are broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods and brought to the surface in the drilling mud. Boreholes drilled in this way include oil or gas wells , water wells , and holes drilled for geotechnical investigations or mineral exploration.

  5. Tunnel boring machine - Wikipedia

    en.wikipedia.org/wiki/Tunnel_boring_machine

    It consisted of more than 100 percussion drills mounted in the front of a locomotive-sized machine, mechanically power-driven from the entrance of the tunnel. The Revolutions of 1848 affected the funding, and the tunnel was not completed until 10 years later, by using less innovative and less expensive methods such as pneumatic drills. [14]

  6. Earthworks (engineering) - Wikipedia

    en.wikipedia.org/wiki/Earthworks_(engineering)

    Typical earthworks include road construction, railway beds, causeways, dams, levees, canals, and berms.Other common earthworks are land grading to reconfigure the topography of a site, or to stabilize slopes.

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