我矿在留矿法和全面法采矿中,全部使用木制放矿漏斗,木材消耗量大,维修费用高;矿块采矿未结束,漏斗已朽;扫矿粉时,需做新斗。为了降低成本,提高效益,我们制作了一种可移式金属漏斗(附图),经使用证明效果良好。 I mine in the mineral retention law and comprehensive mining method, all use of wood mining funnel, timber consumption, maintenance costs are high; mining block is not over, the funnel has been decaying; swept mineral powder, the need to do a new fight. In order to reduce costs and improve efficiency, we made a portable metal funnel (with photos), the use of proven good results.