Research progress of rock mass movement and safety prevention and control in open-pit to underground mining of metal mines
The geological structure of metal mines is dynamic,and the conditions for mineral formation are intricate.The composite disturbance effects of open-pit and underground mining activities trigger a range of engineering geological challenges,including rock deformation,collapse,instability of open-pit slopes,and surface subsidence.These issues present significant risks to the safety of mining operations.The research techniques and theoretical frameworks for studying rock mass movement in metal mines have undergone constant refinement and have been applied across various mining operations.Nonetheless,there remains a need for additional theoretical backing in areas such as mining methods,design,disaster analysis,and treatment.A synthesis of the strengths and limitations of numerical simulation techniques and model test research pertaining to the shift from open-pit to underground mining in metal mines was presented.The intrinsic mechanisms and evolutionary processes of rock mass movement during mining activities were expounded.Utilizing established theories such as the rock mass activation theory,granular medium lateral pressure theory,the double-sliding surface deflection failure(DSD)model,and mechanics model of cantilever beams,the deformation and failure characteristics and instability mechanism of slope and stope surrounding rock under different geological conditions were analyzed.The safety prevention and control measures of rock mass movement in metal mines were summarized by combining the advanced monitoring and early warning technology of open-pit slope and surrounding rock support and ground pressure control technology of underground stope.The main problems and research deficiencies were analyzed,and the future development direction and research trend were prospected.This research provides theoretical reference for engineering practice.
metal minesopen-pit to underground miningsimulation testrock mass displacementmonitoring pre-warningsafety prevention and control technology
NETL
NSTL
万方数据
