technical requirements for open-pit mining

2026-01-13 13:07

The open-pit mining operation mainly included the processes of drilling, blasting, mining, loading, transportation, and dumping. According to the continuity of the work, it could be divided into intermittent, continuous, and semi-continuous. For different types of deposits, the mining technology requirements were different. Among the mining methods for flat deposits (the dip angle is generally less than 12°), the intermittent mining process is suitable for various geological ore and rock conditions; the continuous mining process has high labor efficiency and is easy to realize the automatic production process, but it can only be used for soft ore and rock; the semi-continuous mining process has the characteristics of the above two, but in hard rock, it needs to increase the link of mechanical crushing of rock. In the top-dump mining method, the characteristics of mechanical shovels and draglines should be considered to reasonably arrange the equipment combination. For example, when stripping high steps, due to the relatively light dragline shovel, the dragline shovel should be used more often. According to the needs, a mechanical shovel with a dragline shovel, two draglines with each other, or only one dragline shovel as a secondary top-dump plan could be used. The horizontal mining method had to consider the restrictions of the specifications of the stripping material transportation equipment (such as the dump bridge and the boom dump truck) on the spatial relationship between the stripping bench and the mining bench. In addition, different mining technologies had certain requirements for equipment, such as the drilling diameter of large-scale high-efficiency roller drills reaching 380 - 444mm; the charging vehicle that could mix cheap explosives and waterproof explosives on the spot; the mechanical shovel, the hydraulic shovel, and the front loading machine must have suitable bucket capacity; the electric locomotive, traction unit, self-tipping car, and dump truck must have suitable load capacity; and there must be corresponding bulldozers, shifters, graders, scrapers, and other supporting equipment. In the mining process, the optimization of relevant economic indicators such as production stripping ratio and bench height, as well as the balance and control of resource recovery rate, mining cost, mining efficiency, etc. needed to be considered. If you want to know more about the follow-up, click on the link and read it!