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.

Furthermore, the low pressure leads to less shielding from cosmic radiation and solar winds compared to Earth, where the thicker atmosphere and magnetic field offer some degree of protection. This raises questions about the potential for life on Mars and poses challenges for future manned missions, as astronauts will need adequate shielding from these harmful rays.

- Durability Look for pumps made of corrosion-resistant materials, especially if they will be exposed to harsh environments which can cause damage over time.

(2) Before starting the drilling rig, check whether the charging pressure of the accumulator is normal; Check whether the scouring water pressure and the lubricating air pressure can be; Check whether there is sufficient lubricating oil in the lubricator, and whether the oil supply is appropriate; Check the reverse tendency of the oil pump motor.

The hammer itself can be operated using a pneumatic or hydraulic system, with hydraulic hammers being the preferred choice in most cases due to their consistent performance and reliability. The drill bit used is often designed specifically for marine environments, featuring reinforced materials and cutting edges optimized for hard substrates.

4. Power Plants In some thermal power plants, vertical slag pumps are used to manage the ash and slag generated during combustion processes, contributing to efficient waste management practices.

2. Pedestal Pumps Unlike submersible pumps, pedestal pumps have their motor mounted above the water level. They are easy to maintain since the motor is not submerged. However, they are often less efficient for continuous use in flooded areas.

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