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一、在鑛房内使用水平深孔分層崩鑛採鑛法小中段沿脈巷道採鑛法的缺點迫使我們去探求比較安全並有效的新採鑛法,因此造成了採鑛法新方案的使用。科明捷爾鑛井革新者所提出的在鑛房內用水平深孔崩鑛採鑛法就是其中的一個。本採鑛的最初方案見第一圖。 採鑛前的準備工作与採用小中段沿脈巷道採鑛法所作的相似,卽開掘底部巷道。在鑛房的下盤開掘脈外天井1,由此每隔垂直距離5公尺就開一鑽机室2。
First, the level of the use of deep-hole in the mining chamber deep-hole collapse mining method Small and medium-sized mining along the vein along the weaknesses of the law forcing us to explore more secure and effective new mining law, resulting in a new program of mining law use. One such example is the mining of horizontal deep-hole collapses in the mines by the miners innovators at the Kominer. The original plan for this mining is shown in Figure 1. Preparations before mining are similar to those made using the mining method along the small and middle veins, and 巷 digging the bottom of the roadway. Dredging the outer vents 1 at the lower deck of the mines, thereby opening a rig room 2 every 5 meters vertical.