Analysis of mechanical rock-breaking drilling process and key technologies for raiserockhole in metal mining.

The mechanization, greening and intelligent construction technology of the patio has become the main trend of technological development. This is also one of the key tasks to promote the high-quality development of metal mines. The mining of metal mines is gradually moving towards deeper areas, and the complexity of geological conditions such as high ground pressure, high ground temperature, and high-water pressure, as well as the uncertainty of the operating environment, are becoming increasingly prominent. These bring great difficulties and challenges to the construction of various raiserockhole projects serving mine production. The types of raiserockholes were comprehensively reviewed in metal mining, and the existing mechanical rock-breaking drilling processes for vertical raiserockhole, inclined raiserockhole, and cutting groove (blind raiserockhole) were analyzed. By analyzing the status and challenges faced by existing cutting groove drilling rigs and raise boring machine, the key technologies for intelligent drilling of cutting groove drilling rigs and raise boring machine have been analyzed from the aspects of efficient drilling, intelligent control, surrounding rock control, and intelligent equipment. In response to the insufficient one-time drilling capacity of existing raise boring machines for large diameter and high to medium section shafts, as well as the high deformation of fractured and weak surrounding rocks, which can easily lead to instability and collapse of the raiserockhole. A new construction technology for the integration of drilling and support with large diameter raise boring machines in poor strata has been proposed. Focusing on key technologies such as mechanical rock breaking and positive boring, full-section equipment intelligent boring, equipment matching and safe suspension, and the starting and dismantling of the raiserockhole boring machine, the research and development direction of the raiserockhole boring machine drilling technology has been analyzed. The aim is to provide a reference for the development of safe, efficient, green and intelligent construction technology for metal mine mining. [ABSTRACT FROM AUTHOR]