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“矿层(脈)羣”是指层状或脈状若干大致平行的矿体所组成的矿床,各矿脈彼此相距不远,(数公尺至数十公尺),急倾斜,在开采工作中彼此互有影响。在这些矿脈之间往往又生存着一些所谓“细脈带”,由0.1公尺以下相距数公寸至二、三公尺的若干细小矿脈组成。各条矿脈或细脈带的品位不一,各个中段乃至各个矿块矿石的品位都有所不同。本文主要是研究在什么情况下,可以先采富矿;在什么情况下需要贫富兼采,以及如何达到贫富兼采等问题。本文所述,曾在“有色金属”1956年第11期上附带地谈及,不够深入,而且最后一个公式亦有错误。此次,经过在一些矿山进一步具体研究后,做了些修正和补充,并较系统地研究了这一问题,希望各矿工作人员指正。
“Ore layer (vein) group” refers to the deposits of stratiform or vein-shaped ore bodies roughly parallel to each other. The veins are not far from each other (from several meters to tens of meters) and steeply inclined. During the mining work Affect each other. There is often some so-called “veins” between these veins, consisting of several fine veins several centimeters to two or three meters below 0.1 meter. Various veins or veins of different grades, all the middle and even ore grade ore are different. This article mainly studies under what circumstances we can start mining rich ore, under what circumstances we need both wealth and prosperity, and how to achieve the goal of combining wealth with wealth. As mentioned in this article, it was not incidentally mentioned in the “Nonferrous Metals” issue No. 11 of 1956, and the last formula was also wrong. This time, after some mines further specific study, made some amendments and supplements, and a more systematic study of this issue, I hope mine staff correct.