摘要
介绍了单阶梯尖环齿钻头的结构特点及碎岩特点。近几年东北各煤田地质队金刚石钻头使用情况和大量的野外试验所得的数据表明，单阶梯尖环齿钻头比较适合钻进煤系地层。
This paper introduces the‘structure characteristics and rock fragment charac-teristics of single step drill head with point pick.According to the experimental data,thsidrill head can be used in coal-series strata very well.it has the characteristics of high aging,long life and good economic benefit etc.
关键词
单阶梯尖环齿
钻头
应用
labial surface structure, free surface, specific pressure, repeated fragmen-ting
