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Vocabulary

Drilling depth of a vertical borehole, m – глибина буріння вертикальних свердловин, м

hole inclination– нахил свердловини

Drilling string rotation frequency (continuously adjustable) – частота обертання бурового ставу (регульована)

cone drill bit серцевина бура

  1. Find the right translation

electric motor серцевина бура

direct current управління обертанням

drilling process постійний струм

to control from the cab електромотор

cone drill процес буріння

inclined hole контролювати з кабіни

drive of rotation нахил свердловини

Read the text and translate it.

JUMBO DRILL УБШ227

УБШ227 is a single boom pneumatic power feed jumbo which travels on rails. Designed to drill front holes of 38-51 mm diameter into the depth of 2,7 v in the rocks of f=6-20 units of hardness in horizontal mine working of 5-14 square meters section.

Jumbo Drill УБШ227 is approved for use in the conditions of explosion hazard as concern gas and dust concentration. Mine workings have to be equipped:

  1. with a rail gauge of 600 mm, 750 mm or 900mm;

  2. with a compressed air and water pipe-line, as well as with mine lighting network of 36V.

This Jumbo Drill can be applied for collaring roof bolting in mine working of 3,3 mm to 5,5 mm height using telescopic feeder and of 4,5 m up to 6 m of height using the feeder of the constant length. Minimum inner rounding radius of a mine working for the Jumbo transportation equals 15 m.

For drilling blast holes into the roof of the mine working using telescopic feeder. The design of the Jumbo Drill provides with:

  • hand drilling or automatic mode operation;

  • automatic preservation or parallelism while displacing the feeder;

  • feed mode regulation;

  • manipulator displacement at 45 degrees upwards, at 27 degrees downwards against the horizontal plane, at 25 degrees to the left and 40 degrees to the right against the vertical plane;

  • feeder displacement at 50 degrees to the left and to the rig relatively the manipulator’s axle in the horizontal plane;

  • feeder’s turn at 360 degrees around the horizontal axle;

  • compressed air purification from water and hard particles;

  • automatic stop of drilling while rinsing water consumption is lower than the required norm;

  • meeting sanitary requirements on vibrations, noise and dust content.

Jumbo Drill is completed with spare parts, tools and accessories for the guarantee term of operation.

Vocabulary

Jumbo drill length with telescopic feeder довжина з телескопічним подавачем;

For blastholes drilling in the roof of workings– для буріння шпурів у покрівлі виробітку

Answer the questions:

  1. What is УБШ227?

  2. What holes does it drill?

  3. What is Jumbo Drill УБШ227 approved for?

  4. What have mine workings to be equipped?

  5. This Jumbo Drill can be applied for collaring roof bolting in mine working of 3,3 mm to 5,5 mm height, can`t it?

  6. What does drilling blast holes into the roof of the mine working use?

  7. What does the design of the Jumbo Drill provides with?

Translate into English:

швидкість пересування, підведена напруга, стиснутe повітря, зона буріння, габаритні розміри, номінальний тиск, буріння шпурів, найбільший кут підйому, підведена напруга, глибина буріння.

LESSON 10