The research and evaluation of stress-releasing mining scheme of xishimen iron ore mine

The Production Safety is an important target of the Mine Enterprise. The ground pressure is a very important influent, especially in these years, has become the key problem needs to be resolved to the Production Safety. As one of the methods to control the ground pressure, stress-releasing mining can avoid or reduce the stress superposing, which is a valid method to control the ground pressure hazard. The reasonable sequence of stoping sublevel is the premise to stress-releasing mining. The stability of skarn in the soleplate of ore body is bad and the mining ground pressure is serious in Xishimen iron ore mine. The practice has indicated that adopting the traditional method -"Supporting for Stabilization" can hardly resolve the ground pressure problem in the big area mining. By adjusting the sequence of stoping sublevel in the middle and south mining area, applying the stress-releasing mining and adopting the supporting to combine according the actual circumstances, we have been solving this hard problem effectively. We will make further research to this aspect in the later practice in order to low production costs, promote the production safety and achieve the target that we will increase the recovery rate and decrease the dilution rate significantly.