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桦树矿采用深孔采矿法,用以代替原用的分层充填采矿法和留矿法。目的在于利用矿石的构造条件,以提高劳动生产率。本文略述了三个地区利用深孔采矿的有关设计、生产和经济问题。1500～2300水平的108号地区,在矿块开采和充填顺序的基础上,由分层充填法改为深孔分段采矿法;第二个地区,是在500米水平以下110机械化分层充填采场的顶柱,采用自脉内天井钴凿水平扇形深孔进行崩矿的方法回采;第三个地区,是1100～1300米水平的83号矿体,采用大直径深孔崩矿的垂直漏斗后退式采矿法开采。深孔采矿法,提高了劳动生产率,改善了开采条件。
Birch mining using deep-hole method to replace the original stratified filling mining and retention method. The purpose is to use the tectonic conditions of ore to improve labor productivity. This article outlines the design, production and economic aspects of deep hole mining in the three regions. 1500 ~ 2300 level of 108 area, based on the sequence of mining and filling of the ore block, by the deep-hole sub-filling method to change the mining method; the second area is below the level of 110 meters mechanized layered filling The top pillar of the stope adopts the method of self-pulsating deep horizontal holes with cobalt chisels in the internal vein for mining. The third area is a No. 83 orebody of 1100 to 1300 meters with a vertical Funnel back mining method mining. Deep-hole mining laws have raised labor productivity and improved mining conditions.