浅析窄脉采场上向孔施工

Simply Discussing the Construction on Upward Hole of Narrow Vein Stope

对窄脉采场中采用上向回采孔的施工条件及作业效率进行论述,沿矿岩接触面,根据矿体倾角施工炮孔,可以有效降低对围岩的破坏和减小贫化;由于周边孔的加密,形成一个较整齐的切面从而可以很好的控制上盘。有利于施工组织,便于生产管理。能够提高生产效率,一次落矿量大于压眼并且爆破块度均匀,有利于出矿,从而可以提供出矿设备的效率。针对窄脉采场施工回采孔所涉及到的施工难度和爆破药量,进行阐述并加以解决。

The construction conditions and operating efficiency of upward holes construction in narrow vein stope were discussed. Along the contact surface of ore, the holes were made according to the orebody dip, which can effectively reduce the damage to the rock and reduce the dilution; because of adding the surrrounding holes , a neat section was formed. It can control the hanging side better, and it is good for construction organization, it makes the production easy to manage and it can improve production efficiency, The one time drop is biger than pressure mine explosion hole and the blocks are equality, which is in favor of ore removal, and can provide the efficiency to mining equipment.