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当前,人造金刚石岩芯钻探,在矿山生产探矿中,越来越得到广泛的应用。它显示出效率高、成本低、劳动强度小等优点,在高硬度岩层探矿中尤为突出,是一种实现以钻代坑(井)、超前探矿的重要手段之一。然而,由于它取芯小(φ22毫米),所以对它的探矿可靠性,还缺乏科学的估价。遵照毛主席“有比较才能鉴别”的教导,1977年,我矿进行了坑、钻对比专题试验,初步肯定了小口径钻探在我矿的作用和效果,提供了以钻代坑的地质依据。
At present, synthetic diamond core drilling, mining in prospecting, more and more widely used. It shows the advantages of high efficiency, low cost, low labor intensity and so on, especially in the exploration of high hardness rock formations. It is one of the most important means to realize the drilling (pit) and advanced prospecting. However, due to its small coring (φ22 mm), there is a lack of scientific valuation of its prospecting reliability. In accordance with the teaching of Chairman Mao’s “Comparison in order to be able to identify”, in 1977, I undertook a special trial of pit and drill comparison, tentatively affirmed the role and effect of small-diameter drilling in mine and provided the geological basis for drilling and replacing pit.