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.
(1) When using the drilling rig to drill, the driver should be placed in the drilling position, so that the front end is against the rock, and the distribution should be careful to let the drilling rig move forward, so that the drill bit touches the rock; When opening the hole, first quietly let the drilling rig drive, when the drill rod is in place in the rock, it is allocated to the full open position.
To ensure the effective operation of a sump pump designed for mud evacuation, regular maintenance is crucial. This includes routine inspections, cleaning out the sump basin, checking the float switch, and ensuring that the discharge line is clear of obstructions. Neglecting these maintenance tasks can lead to pump failure, potentially resulting in severe flooding or mud accumulation.
Umuman olganda, burg'ulash vositalarining narxlari ko'plab omillarga, jumladan, materiallar, texnologiyalar, talab va taklifga bog'liq bo'lsa-da, tanlangan vositalarning sifatiga, ishlov berish samaradorligiga va ishchilar tajribasiga ham e'tibor berish zarur. Kelajakda, burg'ulash sektoridagi innovatsiyalar va yangi texnologiyalar natijasida, bu narxlar o'zgarishi va yanada raqobatbardosh bo'lishi mumkin.
The interplay between these two motifs raises critical questions about the balance of power and vulnerability in our lives. When faced with challenges, do we choose to fight with the hammer, or do we find ourselves retreating into the well of introspection? The answer may not be straightforward; individuals often oscillate between these two states, illustrating the complexity of human nature. The hammer can empower us to take action, but it can also lead to haste and recklessness. Conversely, dwelling too long under the well can result in stagnation and despair.
