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漏斗开采法(图1)即在矿山山坡的适宜标高开凿平峒,由平峒向上开凿溜井,围绕溜井进行下向开采,形成漏斗。爆破后矿石沿漏斗坡面溜至放矿平台,经闸门装入矿车。这样不但可以大大提高采矿能力,而且大大减轻了工人的劳动强度。下面对这种开采方法中的一些主要技术问题,高出一些意见,供大家参考。一、漏斗开采法要素1.漏斗坡面角度。漏斗坡面角度选择是否恰当,直接影响到矿山能否顺利地进行开采。角度过小,矿石不能顺利地溜至漏斗底部,堆积在漏斗坡面上,须
The funnel mining method (Fig. 1) is to cut and level the raft on the appropriate elevation of the mine slope. The ravine is drilled upwards from the raft and the ravine is drilled downwards to form a funnel. After blasting, the ore slides along the slope of the funnel to the ore-releasing platform and is loaded into the mine car via the gate. This will not only greatly increase the mining capacity, but also greatly reduce the labor intensity of workers. Some of the major technical issues in this type of mining are highlighted below for your reference. First, funnel mining method elements 1. The slope of the slope angle. The proper selection of the angle of the slope of the funnel directly affects whether the mine can be successfully mined. When the angle is too small, the ore cannot slip smoothly to the bottom of the funnel and accumulates on the slope of the funnel.