Rock drilling tools are necessary tool consumables in drilling and blasting operations, and the total value of annual consumption is very high. Although the service life of rock drilling tools depends on their inherent quality and reasonable use of technology, the annual consumption of a large number of more from the irrational use of waste. Therefore, the reasonable use of rock drilling tools is an important measure to prolong their service life.

1. Attention to rock characteristics

Rock in the complex geological development process forms a series of discontinuous surfaces in different directions, stratification, joints, fissures, faults, etc. The physical and mechanical differences of the rock require the selection of rock drilling tools must pay attention to the rock characteristics to achieve a reasonable match between the rock, rock drills, and rock drilling tools.

2. Normal air compressor pressure

The pneumatic rock drill is compressed air as power. The level of air pressure not only affects the size of the impact energy but also directly affects the effect of powder discharge. The air pressure is low, the impact energy is small, and the rock drilling speed is low. At the same time, it also makes it difficult to discharge powder, aggravates the wear of the rock drilling bit, and causes the drill to jam. Therefore, it is necessary to maintain the normal air pressure of the air compressor.

3. Appropriate shaft thrust

To ensure that the rock drill bit stably contacts the rock when drilling, the rock drill should have a suitable shaft thrust. If the shaft thrust is too small, the drill bit will be in poor contact with the rock, and it is easy to make the drill bit fall off and drop the teeth; The increased force accelerates the wear and fracture of the drill bit.

4. Use the unloader

Do not use a hand hammer to disassemble the rock drill bit, but use a drill unloader to remove the drill, which is conducive to improving the service life of the rock drilling tool.

5. Timely grinding of rock drill bits

When chiseling in hard rock, rock drill bit wear is inevitable. Dulled drill bits can not continue to drill to carry out drill bit repair and grinding, which is conducive to reducing the generation and expansion of surface micro-cracks, improving the speed of rock drilling, extend the service life of rock drill bits.

6. Improve the rock drilling skills of the staff

Improving the rock drilling operation technology can reduce the early damage of rock drilling tools and prolong the service life. When opening the hole, advance slowly, and work at full speed after the rock drill bit enters the rock mass. When connecting the drill rod, keep the drill rod casing and the shank adapter concentric and screw the threads in place. Do not hit the rock drilling tool when clamping, open the water supply valve, advance slowly, and keep moving back and forth to make the hole wall smooth and the drill rod move forward and backward freely to prevent the occurrence of accidents such as cemented carbide cracking, shank adapter breaking, casing breaking, and drill rod breaking. Therefore, it is imperative to improve the quality of staff rock drilling.