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在浅孔留矿采矿法中,顺路天井通常是垂直上下中段沿脉平巷布置的,这种布置方法,在正常情况下是适宜的。 但是,在生产实践中,往往由于储量品位的变化或断层错动的影响,设计回采边界线为一斜线(如图1 A～B)、采场上长下短的时候,若顺路天井仍垂直布置(如图1 A～B),就会造成矿量的损失(如图1△ABC)。 为了充分利用国家资源,提高回采率,针对这种情况,我们进行了试验和研究,取得了良好的效果。
In the shallow-hole ore-holding mining method, the down-going pavements are usually arranged along the upper and lower vertical veins and lanes, and this arrangement method is suitable under normal circumstances. However, in the practice of production, the boundary line of recovery is often designed as a slanted line due to the change of grade or the dislocation of the fault (as shown in Figure 1 A ~ B). When the length of the stope is short and long, Vertical layout (Figure 1 A ~ B), it will cause the loss of ore (Figure 1 △ ABC). In order to make full use of national resources and improve the recovery rate, we conducted experiments and studies in response to this situation and achieved good results.