采用土力学原理和弹性力学的拉梅解答，分析了钻孔孔壁泥浆护壁力学机理，对比硬质合金、钢粒、金刚石钻进工艺，并在此基础上研究了孕镶金刚石钻进的工艺方法、技术参数及泥浆的相关指标参数，同时针对卵石层取芯率低的问题，采用自行焊接的岩芯管进行取芯，结果表明，取芯率达到80％以上。%Using the principle of soil mechanics and Lame solutions of elastic mechanics,mechanics mechanism of slurry wall of borehole were analyzed. This research contrasts carbide drilling,steel grains drilling and diamond drilling. The process of diamond drilling method,technical parameters and mud performance were discussed. For the problem of poor core recovery rate,the research uses welded core barrel of its own de-sign to drill. The results indicate that core recovery rate is more than 80%.
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