Non-explosive mechanized and intelligent mining/heading in underground mine
(School of Resources and Safety Engineering, Central South University, Changsha 410083, China)
Abstract: The non-explosive mechanized mining and heading is an alternative approach to traditional drilling and blasting method for excavating the deep hard rock, the intellectualized upgrade of which includes smart perception, wise decision and intelligent control. Based on the comprehensive analyses for two key problems (rock breakage and rock stability) and three key factors (environmental conditions, rock properties and excavation parameters), the process of non-explosive mechanized and intelligent mining and heading was established, which included in-situ monitoring, cuttability improvement, intelligent control and performance evaluation to achieve mechanization, automation and unmanned fully-automation for equipment, continuation, refinement and collaboration for process, and informatization, digitization and smartization for management. In addition, the PDCA (Plan-Do-Check-Adjust) cycle and its associated sub-cycles were established to manage the process of non-explosive mechanized and intelligent mining and heading. Through the cyclic managements for deep high stress induced utilization and energy regulation, mutagenesis modification for risk reduction and cuttability improvement of hard rock, and multi-source rock breakage, the safe and efficient mining and heading in underground mine can be achieved.
Key words: deep mining; non-explosive mechanized excavation; intelligent mining and heading; mining and heading processes; management model