煤矿安全2018，Vol.49Issue(4)：92-95,4.DOI:10.13347/j.cnki.mkaq.2018.04.024
煤矿井下煤层大直径钻孔技术与装备
Drilling Technology and Equipment of Large Diameter Borehole in Coal Seam of Underground Coal Mine
许超1
作者信息
- 1. 中煤科工集团西安研究院有限公司,陕西 西安 710077
- 折叠
摘要
Abstract
Based on the characteristics of large diameter borehole in coal mine, the construction technology of large diameter drilling with "pilot borehole construction and reaming" is proposed, and the matching ZDY12000LD high power drilling rig, (o)400/127 mm large diameter spiral drilling rode and (o)450/153 mm, (o)650/450 mm large diameter reaming drill bit and other key equipment are also proposed, which effectively ensures the quality of large diameter borehole. The drilling with diameter borehole of 650 mm and the maximum hole depth of 75 m is completed by field test.关键词
大直径钻孔/先导孔/扩孔钻进/钻进装备/钻孔施工工艺Key words
large diameter drilling/pilot hole/reaming drilling/drilling equipment/drilling construction technology分类
矿业与冶金引用本文复制引用
许超..煤矿井下煤层大直径钻孔技术与装备[J].煤矿安全,2018,49(4):92-95,4.
