论文部分内容阅读
我队自1969年试验成功金刚石钻孔同径造斜方法以来,以后又吸取了国外的某些做法,十多年来已造斜六十余次。近二十个钻孔的矿心采取率得到了弥补,甩掉了一些孔内事故钻具。造斜技术已成为我队
Since our team succeeded in experimenting with the diamond drilling method of the same diameter in 1969, our team learned some foreign practices later and made more than 60 dozen a decade. Nearly twenty drill core mining rate has been made up to get rid of some of the hole accident drilling. Bending technology has become my team