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一般的浅眼留矿法,在采矿过程中,工具、材料的运送不方便,随上采而架设的天井支柱工作量大,木材消耗多,工人工作条件不好,劳动强度大,通风时间长,采矿强度受到影响。随着吊罐天井新技术的出现,特别是斜天井吊罐试验的成功,对天井吊罐留矿法采矿提供了基本条件。天井吊罐可以提升人员和材料,天井中不用木材支护,有利于通风。我们从1969年设计采用天井吊罐留矿法采矿,普遍反映效果
In the mining process, tools and materials are inconvenient to transport. The pillars of the pillars erected with the mining are heavy workloads, heavy wood consumption, poor working conditions of the workers, heavy labor intensity and long ventilation time , Mining intensity affected. With the advent of new technology in the hanging tank patio, especially the successful trial of the inclined tank hanging tank, the basic conditions are provided for the mining of the suspended tank retaining tank. Patio cranes to enhance the staff and materials, timber without patio support, is conducive to ventilation. We designed from 1969 to adopt the method of pit-hold tank retention mining method, generally reflecting the effect