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今年六、七月间,湖北省地质局鄂东地质大队试用初级定向钻进方法成功地打了四个高标准钻孔。这四个定向钻孔,对矿体的实际空间控制座标点同设计要求的控制座标点,都非常接近,如7B/184孔,控制深度176.5米,偏离只1米;7A/179孔,控制深度148米,偏离1.75米;5/210孔,控制深度213米,偏离4.5米;7B/183孔控制深度131米,
In June and July of this year, the Geological Brigade of the Hubei Geological Bureau Erdong successfully tested four primary drilling methods using primary directional drilling. These four directional drillings are very close to the actual space control coordinate points of the ore body and the control points required by the design, such as 7B/184 hole, control depth of 176.5 meters, deviation of only 1 meter; 7A/179 holes, control Depth 148 meters, deviation 1.75 meters; 5/210 holes, control depth 213 meters, deviation 4.5 meters; 7B/183 hole control depth 131 meters,