Key Points of Operation Control and Application Fields of Rock Reamer Hole Opener

Rock reamer hole openers have been widely adopted, and this equipment is used in various large-scale construction processes. So, what are the key points for its operation and control? In what other fields can it be applied? This article will uncover the answers for you.

Key Points of Rock Reamer Hole Openers Operation and Control

The main parameters for operating and controlling rock reamer hole openers are the push-pull force applied to the reamer by the drilling rig, the rotational speed, and the pump rate of the slurry during reaming.

• Different diameters and types of rock reamer hole openers have varying requirements for drill pressure. Most reaming accidents in rock layers are caused by excessive drill pressure due to the over-pursuit of reaming speed.

  
  

• The rotational speed is another crucial control parameter for rock reaming construction. The rotational speed mentioned here refers to the speed at which the drilling rig drives the drill rod to rotate the reamer, which primarily depends on the hardness of the rock. For soft rock reaming, when the reamer diameter is ≤30", the recommended rotational speed should not exceed 60 Rpm; when the reamer diameter is greater than 30", the recommended rotational speed should not exceed 40 Rpm.

  
  

• An important principle for rock reaming operation is: the harder the rock that needs to be fractured, the greater the required drill pressure and the lower the required drill speed. It should also be noted that under the same drilling speed conditions, reamers of different diameters produce different effects; the larger the diameter of the reamer, the greater the linear speed at the outer edge, and the more severe the wear.

  
  

• Ensuring the pump rate of the slurry is also crucial during rock reaming. The main role of the slurry at this time is to cool the reamer and carry the drill cuttings. The actual pump rate of the slurry should be determined after calculating the amount of drill cuttings produced at each reaming stage and the carrying capacity of the slurry. Generally, it should not be less than 1m/min.

  
  

• Method for rock reaming construction: When the rock reamer hole openers transitions from soft soil to rock layer or from soft rock to hard rock, the key point is to first slow down the reaming speed and reduce the drill pressure. Only after the body of the reamer completely enters the rock or hard rock layer can the drill pressure be increased. If too much drill pressure is applied in this process, it can easily cause the drill to jam, thereby damaging the reamer or at least shortening the life of the reamer bearings.

  
  

• When performing staged reaming, be careful not to choose rock reamer hole openers with too similar diameters for staged reaming. Otherwise, on one hand, it will not bring out the intended reaming effect of the reamer, and on the other, reamers with diameters that are too similar can easily get stuck in the rock layer during operation.

Exploration of Rock Reamer Hole Openers Application Fields

First, the construction team always relies on it. During construction, some small holes of various sizes are often used, which are basic needs for the work. To meet this requirement, people need to use all possible means to develop hole-opening technology. In such a situation, rock reamer hole openers emerged.

The main principle is to convert electrical energy into kinetic energy to obtain strong power, and then drill holes into the raw materials according to people's various needs. The size of these small holes can also be controlled by people, which brings great convenience to our work. Such equipment is generally used in the construction of buildings and the repair of houses. In this field, it has always been essential.

Additionally, rock reamer hole openers can also be applied in various enterprises and factories, playing an important role in ordinary enterprise renovations.

It can easily drill many small holes of different sizes, which is crucial for renovations, and its high work efficiency can greatly improve the efficiency of people's renovations. Consequently, rock reamer hole openers have been widely used in various fields of society. With many advantages, rock reamer hole openers have entered many different social fields by virtue of their own merits.