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The drilling accuracy is not sufficient, check if you have done these points well!
Release time:
2024-07-12
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Summary:
Drilling and blasting construction: How to improve drilling accuracy
When constructing tunnels and underground projects, the rock drilling rig is an important tool used in drilling and blasting construction. The accuracy of its drilling directly affects the subsequent blasting effect and the overall progress of the project. To make drilling more precise and improve project quality and efficiency, Zenxon Heavy Industry suggests enhancing rig drilling accuracy through these points.
First, selecting the right drill bit and maintaining it properly is a basic requirement for improving drilling accuracy. Choose a suitable drill bit design based on different rock types. For example, a flat front or a center concave drill bit can help reduce errors during drilling. Keeping the tip of the drill bit intact and sharp is crucial for efficient drilling and accurate positioning. During regular maintenance of the drill bit, the end face should be ground evenly to avoid local wear that can lead to poor chip removal and reduced stability, which can further improve the straightness and accuracy of the drilling.
Next, improving the design of the drill rod can also enhance the stability of the drilling. Using a thicker drill rod and adding a guide tube behind the drill bit can help resist lateral forces during the drilling process, reducing bending of the drill rod and drilling errors. This design makes long hole drilling more stable and can control drilling errors within 3-5%, significantly improving the quality of the drilling.
In addition, enhancing the technical level of the operators is also very important. Based on the properties of different rocks, reasonably determine the location of the holes and the direction of drilling to ensure that each hole fully complies with the construction plan. The ability to adjust the drilling speed according to rock hardness is crucial to avoid slipping or drilling too quickly due to speed mismatches, effectively controlling drilling errors.
Finally, appropriately controlling the impact force is also key. During drilling, the impact force should be adjusted according to geological conditions and drilling depth. Especially when the drilling depth exceeds the natural bending length of the drill rod, appropriately reducing the impact force can prevent the drill rod from bending, maintain a stable drilling direction, reduce torque loss, and ensure the accuracy of the drilling.
In summary, drilling accuracy can be improved through measures such as correctly selecting and maintaining the rock drilling rig drill bit, improving drill rod design, enhancing operational skills, and precisely controlling impact force. This not only improves construction efficiency and blasting effects but also enhances working conditions, reduces labor intensity, and promotes high-quality development of engineering construction.
(Zenxon & Haoda ZXZY30A rock drilling rig)
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