ＫＢＹ钻头在阿尔捷姆煤矿的工业试验孟繁聪译急倾斜煤层钻工艺孔的钻进效果很大程度上取决于钻具的结构。特别是在非均质结构的煤突出地段，用成批生产的机具进行钻进，经济技术指标较低。顿涅茨工学院戈尔洛夫分院进行的研究，研制出新型的带弹性节齿的ＫＢｙ钻头。这种... KBY Drill Industrial Test at the Altem Coal Mine Drilling results for a sharply inclined coal seam drilled hole depend largely on the structure of the drill. Especially in the non-homogeneous structure of the coal out of the lot, the use of mass production equipment for drilling, economic and technical indicators lower. Research conducted by the Donovan Institute of Technology Gorlov branch to develop a new KBy drill bit with flexible knuckles. This ...