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Drifting
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
- Deviating from the intended direction, such as a borehole during the process of drilling.
- Excavating a horizontal underground passage parallel to or along a vein or related structure.
- Straightening inward bulges in casing by using a special tool. see drift 5.
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Проходка, русский
Совокупность производственных процессов, осуществляемых для образования горных выработок
Прошивка кузнечная, русский
Кузнечная операция для получения в металлической заготовке сквозного отверстия или углубления с помощью пробойника
Перенос на высоту менее 2 метров, русский
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Excavating, английский
Земляные работы; разработка выемок ~ of hard ground разработка плотного грунта hand ~ отрывка грунта вручную; земляные работы, производимые вручную
Horizontal, английский
- Горизонталь; горизонтальный
- Горизонталь; горизонтальный 287
- At right angles to the direction of gravity; on the level; parallel to the horizon; neither vertical nor inclined.
- A direction parallel to the horizon, or what is commonly termed lying flat. one of the greatest inconveniences navigators have to struggle with is the frequent want of a distinct sight of the horizon. to obviate this a horizontal spinning speculum was adopted by mr. lerson, who was lost in the victory man-of-war, in which ship he was sent out to make trial of his instrument. this was afterwards improved by smeaton, and consists of a well-polished metal speculum about 3-1/2 inches in diameter, inclosed within a circular rim of brass, so fitted that the centre of gravity of the whole shall fall near the point on which it spins. this is the end of a steel axis running through the centre of the speculum, above which it finishes in a square for the convenience of fitting a
Underground, английский
- Подземный
- Below grade or ground level, as underground drain lines or cables.
Straightening, английский
Straighten, английский
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Drill column, английский
- A length of steel pipe equipped with a flat cap at one end and a jack screw on the opposite end by means of which the pipe can be wedged securely in a vertical or horizontal position across an underground opening to serve as a base on which to mount a small diamond or rock drill. also called bar, drifter bar, drill bar, jack bar.
- A synonym for drill stem.
- Double drum. hoisting device having two cable spools or drums rotating in opposite directions. double extra heavy. =double extra strong, q.v. double extra strong. a certain class of very thick walled pipe, which sometimes is used as a drivepipe; often incorrectly called double extra heavy or extra heavy pipe.
Down-grade, английский
- To classify a substance as lower quality than warranted.
- To reduce the value by the addition of a dilutent, as in adding waste rock to ore.
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