论文部分内容阅读
人造金刚石钻进技术首先在我国矿山坑内钻探中试验成功，并于1975年由四部一局在湖南锡矿山对该技术进行了鉴定。从此，坑内金刚石钻探得到了很大发展，仅有色矿山系统，坑内钻探年工作量就由1970年的5万m增至现在的20多万m，锡矿山矿务局每年坑探的工作量由过去占掘进总量的50％（5000m）下降至18％左右，云南老厂矿每年坑内钻探量达几万m，“以钻代坑”取得了很大成绩，它节约了大量资金和人力物力，大大加快了矿山勘探速度，以及为矿山地压、探水、探险等安全工作作出了贡献。目前，我
Artificial diamond drilling technology was first successfully tested in the mine pit in China. In 1975, the technology was identified by four innings at the Hunan tin mine. Since then, the pit of diamond drilling has been greatly developed, only the color of the mine system, pit drilling year workload increased from 50,000 km in 1970 to the present more than 200,000 m, pit mining work every year from the tin mine In the past, 50% (5000m) of the total amount of excavation had dropped to about 18%. The annual drillings in the old factories and mines in Yunnan Province amounted to tens of thousands of m. Great achievements have been made in drilling substitution pit, which saved a lot of money and manpower and material resources, Greatly accelerated the speed of mine exploration, as well as mine pressure, water exploration, exploration and other safety work has made its contribution. Currently, I