2013年2月下 施工技术 第42卷第4期 CONSTRUCTION TECHNOLOGY 85 D0I:10.7672/sgjs2013040085 旋挖钻机入岩空气冲洗钻进技术 王国辉，张春来，林明赫，郑成果 (河北建设察研究院有限公司，河北石家庄050031) [摘要]旋挖钻机人岩空气冲洗钻进技术利用牙轮以剪切破岩和冲击破岩为主、破岩效率较高的特点，通过将岩芯 钻的破岩截齿更换为牙轮，提高了破岩效率，降低了钻进时钻头旋转摩擦产生的热量，减缓了钻头破岩刀具的磨 损.通过引入压缩空气循环系统和对开式沉渣管岩芯钻头，实现了钻头的冷却和不间断排清钻进.试验表明，旋 挖钻机人岩空气冲洗钻进技术提高钻进效率1倍以上，为旋挖钻机入岩钻进开辟了一种新途径. [关键词]建筑机械；空气冲洗工艺；旋挖钻机；人岩钻进；破岩方式 [中图分类号]TU624 [文献标识码]A [文章编号]1002-8498(2013)04-0085-04 The Bedrock Drilling Technology of Rotary Drilling Rig with Air Flushing Wang Guohui Zhang Chunlai Lin Minghe Zheng Chengguo Hebei Research Institute of Construction and Geotechnical Inuestigation Co.Ld.Shijiazhuang Hebei 050031 China) Abstract:The chief rock fragmentation methods of roller-bit are by shearing and impacting and its rock fragmentation efficiency is higher.By replacing the drill bullet-type cutter with roller-bit-core the bedrock drilling technology of rotary drilling rig with air flushing method improves the rock fragmentation efficiency and reduces the heat generated by the drilling bit rotation friction which also slows down the wear-and-tear of the drilling bit.With the introduction of pressed air circulation system and the two- way open roller-bit-core drill with drilling residue collecting vessel the drill bit can cool down and enable continuous slag discharge in the process of drilling.Experiment shows that the bedrock drilling technology of rotary drilling rig with air flushing method can improve the drilling efficiency by over one time and sta...
旋挖钻机入岩空气冲洗钻进技术.pdf
