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介绍了(1)1980～1986年间,中国黄金总公司13个支队为勘探黄金,在全国20多个省(区),平均开动75台钻机,共完成47.3万米钻探任务的情况;(2)对我国现有砂钻设备的改造情况;(3)现用工艺的优缺点,并提出了“双臂冲击、内管取样”和半合管取样法;(4)水上砂钻和大口径砂钻以及深孔砂钻经验;(5)随钻爆破钻孔中巨砾的新工艺;(6)今后砂钻研究方向。
(1) During the period of 1980-1986, 13 detachments of China National Gold & Gold Corporation were exploited for gold. An average of 75 rigs were started in more than 20 provinces (regions) in the country, completing a total of 473,000 meters of drilling tasks. (2) (3) Advantages and Disadvantages of Current Process, and proposed “double-arm impact, inner tube sampling” and semi-co-pipe sampling method; (4) water sand drilling and large diameter sand Drilling and deep-hole sand drilling experience; (5) drilling drilling blasting boulder new technology; (6) the future direction of sand drilling.