论文部分内容阅读
我局金刚石钻探始于一九七四年下半年,到现在已有七年多了。回顾其发展过程,大体经历了生产试验、大发展和巩固提高三个阶段。到八一年底止,开动小口径金刚石钻机台数占固体矿产开动总台数的83%,基本实现了小口径化。七年来,先后对铁、铜、铅锌、镍、金、硫、硅灰石、煤等十多个矿种进行了普查勘探,累计完成工作量337963m。最高开动钻机28台(图1),台月效率逐年提高,成本逐年下降(图2)。单机台月效率最
Diamond drilling in the Bureau began in the second half of 1974. It has been more than seven years now. Reviewing its development process, it has undergone three stages: production trials, major development, and consolidation and improvement. By the end of August, the number of small-diameter diamond drilling rigs accounted for 83% of the total number of solid minerals started, basically achieving a small diameter. In the past seven years, magnanimity surveys have been carried out on iron, copper, lead-zinc, nickel, gold, sulfur, wollastonite, and coal, and a total of 337,963 m have been completed. The maximum number of drilling rigs was 28 (Figure 1). The monthly efficiency of the Taiwanese Plateau increased year by year, and the cost decreased year by year (Figure 2). Single machine monthly efficiency