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一、人造金刚石钻进取得可喜成果在批林批孔运动大好形势推动下,继河南九队在7～9级岩石中,使用7个人造金刚石孕镶钻头,进尺394.34米,取得了平均钻头进尺52.33米(最高158.11米)、平均时效1.41米(最高4.15米)之后,河南三队在8～10级岩石中,使用17个人造金刚石孕镶钻头,进尺261.26米,平均钻头进尺12.72米(最高80.12米)。湖北七队在5～7级、9～11级岩石中,使用上海砂轮厂制作的人造金刚石钻头5个,取得进尺214.11米,平均钻头进尺42.82米(最高105米,所钻岩石
First, the gratifying achievements made by synthetic diamond In the excellent situation driven by the hole Lin approved Kong, following the nine teams in Henan rock in the 7 to 9 rocks, the use of seven artificial diamond impregnated drill bits, footage 394.34 meters, obtained an average bit With a footage of 52.33 meters (up to 158.11 meters) and an average duration of 1.41 meters (up to 4.15 meters), the Henan Three Corps used 17 synthetic diamond inlaid drill bits in Grade 8-10 rocks with footage of 261.26 meters and average drill footage of 12.72 meters (Up to 80.12 meters). Hubei team in the 5 to 7, 9 to 11 rock, the use of Shanghai Grinding Factory made artificial diamond drill 5, made a footage of 214.11 meters, the average drill bit footage 42.82 meters (up to 105 meters, the rock drilled