1.Downhole drilling machine: When drilling a downhole gun hole with a aperture less than 150 mm, in addition to the application of a rock drill, it can also be used to drill a small diameter of 80 ~ 150 mm. When drilling a gun hole with a diameter of less than 70 mm in coal or softer mineral rock, it is generally used to drill or air drill, driven by a motor (or air motor) to drill the drill pipe, and the rock (coal) chips drilled out are discharged through the spiral groove on the drill pipe.

Challenges and Innovations

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Several manufacturers are recognized as key players in the DTH hammer industry. Their innovations and engineering prowess have contributed significantly to the advancement of drilling technology.

Производитель грязных насосов Бизнес и технологии в Кыргызстане

- Tiết kiệm nhiên liệu Các máy nén khí di động diesel hiện đại được thiết kế để tiết kiệm nhiên liệu, giúp giảm chi phí vận hành trong thời gian dài.

The DTH hammer operates through a system of compressed air. High-pressure air is directed down the drill string, powering the hammer at the end of the drill bit. The hammer strikes the bit with considerable force, fracturing the rock immediately beneath it. As the bit penetrates further, the broken rock is then cleared from the hole by the same air stream, allowing for continuous drilling without the interruptions often associated with other drilling methods.

Where 0.433 is a conversion factor to translate fluid density and depth into pressure in pounds per square inch (psi).

Заключение