Gently Inclined Thick Ore Body Mining Method Stope The Ore System Optimization Study

To ore-drawing system of stope, it has been regarded as a extrude problem without solution in the flat-dip medium-thick ore-bodies. In this paper, it is regarded as a researched object that the Dahonghan Copper Mine, the new ore-drawing system of stope was studied, and the system advantage such as high effective, economic, safety. Integrate the country emphases science and technology tackle key problem item, the method include the theory analyses, the simulated test in the room, and the industry test in the site were used, the ore-drawing system and equipment of stope was studied.The results and solutions are as follow:Optimized and studied the new ore-drawing system of stope with ore gathering by trench, vibration flow-aiding and electric rake delivering. In the system, the focus is order to improved mine flow fluency in the stope, the core equipments are new YZZ vibration flow-aiding machine and YSP water blasting-based rock breaker, optimized the mechanism of ore-drawing and built the measure of classification management to the mine mass. The compare to the conventional gravity flow electric rake, the ore-drawing capacity of the new system higher 45%, the cost lowness 32.3%, the picking and cutting ratio reduce 50.66%, and the directed economic benefit reached 2.673 million RMB.The YZZ vibration flow-aiding machine has been manufactured successful in the stope. The mechanical model of vibration flow-aiding was built, the conveyor's vibrating regulation was analyzed, the causes resulting in twisting vibration of the conveyor were investigated, and the motion equation of the conveyor in stable self-synchronizing vibrating was deduced, and then both the stable self-synchronizing running criterion of the conveyor and the relevant measures was put forward. Thenew design idea was used which the vibration flow-aiding technology and the theory of double motors and self-synchronizing vibration, optimized and studied the YZZ vibration flow-aiding machine.Optimized and studied the new bottom structure with ore gathering by trench and vibration flow-aiding. The action mechanical was studied to electric rake delivering and vibration flow-aiding. The contrast with the conventional gravity flow, the inner and outer friction angle of ore was reduced greatly, the effective height was tow times than the vibration flow-aiding machine didn't start, and was 4.7 times than the gravity flow, the fluidity and pass ability was notable improved.The YSP water blasting-based rock breaker was studied successful. Studied the fragmentation mechanical to the water blasting-based, the main causes were investigated to affect the fragmentation effect. The results of test showed that it was secondary fragmentation machine reliable, highly efficient, safety and economic.