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小口径金刚石钻探具有效率高、质量好、减轻体力劳动强度等优点,但由于材料费成倍高于钢粒钻进,所以对其经济效果仍有争议.本文就此问题做一些对比分析.勘探周期小口径金刚石钻进与大口径钢粒钻进比较,台月效率、台年进尺都有显著提高,特别是在中硬和硬岩中(可钻性7～10级)更为明显.从几个矿区调查结果完全说明了这个问题.突泉县莲花山铜矿是一个脉状矿床,矿脉产于二迭系大石寨组,围岩大部分是凝灰角砾岩、角岩等,致密坚硬,可钻性
Small-caliber diamond drilling has the advantages of high efficiency, good quality, and ease of manual labor, but the economic effect is still controversial because the material cost is doubled that of steel. This paper does some comparative analysis on this issue. Small-diameter diamond drilling compared with large-diameter steel drilling, Taiwan efficiency, the Taiwan footage are significantly increased, especially in the hard and hard rock (drillability of 7 to 10) is more evident from a few The survey results of a mining area fully illustrate this problem.Luochuan County Lotus Hill copper deposit is a vein deposit, veins produced in the Permian Dashizhai formation, most of the surrounding rock tuff breccia, horn rock, dense hard , Drillability