Through data collection and field investigations of a gold mine's goaf,a 3D digital model of the mine's goaf and roadways was established using 3Dmine software.This model accurately provided information on the actual boundaries and shapes of the goaf at different levels.Based on the comprehensive analysis of goaf conditions and the mine's production reality,a management plan was proposed.The management strategy includes the following:for goaf groups/collapse pits(above the fourth level)that have interconnected,surface waste rock filling is used;for isolated goafs on the fourth level,forced roof caving through medium-long hole blasting is employed to fill the goaf with waste rock from the surface.In addition,closed-off isolation methods are applied for joint management.For other goafs where mining has ceased and access is no longer possible,the goafs are managed by sealing off the level stone doors.For goafs under mining,filling with in-pit coarse rocks and sealed isolation methods are implemented.Through the integrated application of these various measures,the risk of large-scale ground pressure activities and surface subsidence has been thoroughly eliminated,creating favorable conditions for continued underground production operations.
关键词
金属矿山/空场采矿法/采空区治理/3Dmine软件/地压控制/废石充填/崩落法
Key words
metal mine/open stoping method/goaf management/3Dmine software/ground pressure control/waste rock filling/caving
维普
万方数据