淮南潘三煤矿为了解决上仰穿层孔钻遇极硬岩层问题,采用了气动潜孔锤冲击回转钻进,通过现场施工数据和经验总结了其高效钻进的最优工艺参数。应用结果表明,冲击回转钻进工艺比普通回转效率提高4倍以上,极大地降低了生产成本,是一种适用于解决煤矿井下硬岩钻进问题的有效工艺方法,具有较大推广应用前景。 In order to solve the problem of the extremely hard rock formations encountered in the piercing process of the Yangzhan Pansan coal mine, the Pneumatic Down-hole Hammer Impact Rotary Drilling was adopted. Based on the on-site construction data and experience, the optimum technological parameters of high-efficiency drilling were summarized. The application results show that the impact rotary drilling technology can increase the efficiency by more than 4 times compared with the ordinary rotary speed, greatly reducing the production cost, and is an effective technological method suitable for solving the hard rock drilling problems in the coal mine, which has a great promotion and application prospect.