论文部分内容阅读
三加拿大是世界上金刚石钻探技术较先进的国家之一。1955至1971年间,每年完成的金刚石钻探工作量约为210～240万米,但到1972～1973年间则降到150万米左右。大部分钻探工作是在难于到达的地带进行的,因此很需要能够迅速搬迂而且成本低的岩心钻机。继六十年代末成批生产了JKS500重型全液压岩心钻机和七十年代初投产JKS400型全液压岩心钻机之后,1975年又研制成功JKS300型轻便全液压岩心钻机,钻进能力
Three Canada is one of the more advanced diamond drilling technologies in the world. Between 1955 and 1971, diamond drilling was completed annually at about 2.1-2.4 million meters, but it dropped to about 1.5 million meters by 1972-1973. Much of the drilling is done in hard-to-reach areas, so there is a great need for core drilling rigs that can move quickly and cost effectively. Following the mass production of the JKS500 heavy hydraulic core drill in the late 1960s and the production of the JKS400 full hydraulic core drill in the early 1970s, the JKS300 portable full hydraulic core drill was developed in 1975. The drilling capacity