摘要
通过工程实际,结合相类似工程,介绍了在V、IV软弱围岩隧道的新奥法开挖中,采用精确钻眼,优化爆破技术,提高了隧道的开挖质量。
Combining similar projects,the paper introduces optimizing blasting technology using accurate drilling to improve excavation quality in V and VI weak surrounding rock tunnel excavation by means of NATM based on engineering practice.
出处
《内蒙古公路与运输》
2011年第2期11-13,共3页
Highways & Transportation in Inner Mongolia
关键词
钻孔精度
光面爆破
预裂爆破
软弱围岩
drilling precision
smoothwall blasting
presplitting blasting
weak surrounding rock
