Based on certain mechanical quality of the rock, the analysis on the Polycrystalline Diamond Compacts (PDC) bit and the rotary percussive drilling is carried out.

• 在管棚支护所钻岩石的力学性质基础上,对管棚支护钻孔所采用PDC钻头和回转冲击的钻进方式进行了比较分析。