Abstract:The main chute system is an important transfer system and the "throat" of the mine. The collapse and destruction of the main chute seriously affect the safety production of the mine. According to the collapse failure of the main chute system in the Damaru section of Datun Tin Mine, the three-dimensional morphology, collapse space position, and actual boundary of the chute are obtained accurately by using SLAM three-dimensional scanner. Combined with the actual application of the chute, the failure cause of the chute system is comprehensively studied and analyzed, and two schemes of repairing the chute and building a new chute system are put forward. From the feasibility of the scheme design, investment cost, safety risk in the construction process, and other aspects of the two schemes are compared and analyzed, and finally determined that the new chute is the best economic and feasible technical scheme.