Introduction
What factors will affect the power of DTH drilling rig? The following DTH drilling rig manufacturer will briefly introduce to you the factors that affect its powe
Details
What factors will affect DTH drilling rig power?
What factors will affect the power of DTH drilling rig? The following DTH drilling rig manufacturer will briefly introduce to you the factors that affect its power.
1. Impact power and impact frequency. In order to increase the mechanical drilling speed, the impact power and impact frequency should be increased. However, in the pneumatic impactor of a down-the-hole drilling rig, impact power and impact frequency are two parameters that restrict each other. To increase the impact power, it is necessary to increase the stroke of the piston, which will reduce the impact frequency. On the contrary, to increase the impact frequency, it is necessary to reduce the weight of the piston and the stroke of the piston, which in turn reduces the impact power.
2. Fissure water on the perforation working surface. This is mainly aimed at drilling working surfaces with fissure water. Taking the Dulong Manjiazhai Mine as an example, water is often encountered on the working surface during the perforation process, which will greatly reduce the efficiency of the perforation operation. In the long run, the long-term presence of fracture water will increase the equipment failure rate of down-the-hole drilling rigs.
3. Wind pressure. The DTH drill’s impactor is a pneumatic tool. In order to achieve the rated impact power and impact frequency, wind pressure is an important factor. Increasing the wind pressure can adjust the gravel discharge effect, increase the mechanical drilling speed, and increase the life of the drill bit. When the wind pressure increases from 0.7Mpa to 1.4Mpa, the perforation speed increases by 70%. It is for this reason that large-diameter down-the-hole drilling rigs are now equipped with air compressors to reduce pipeline depressurization.
4. Drilling diameter. Increasing the diameter of the drill hole can subsequently increase the piston diameter of the impactor, which can increase the impact power and impact frequency. On the other hand, increasing the diameter of the borehole can increase the hole network parameters of the blast, improve the linear meter blast volume of the borehole and the annual drilling volume of the drilling rig.
5. Preparation of the perforation working surface. The cleaning and selection of the working surface are also an important factor affecting the piercing speed. The working surface is uneven and the drilling rig cannot perforate according to the planned parameters; the soft rock on the working surface is not cleaned, which affects the perforation speed and the quality of the hole. Therefore, preparation of the work surface is very important.
The above is a summary for you of the factors that affect the power of DTH drilling rigs. I hope it will be helpful to you. If you have any questions, please feel free to contact us and follow our official website to help you learn more about DTH drilling rigs
