Application of Wide Blade Auger Drill with Medium Air Pressure in Jincheng Coalmine
详细信息
- 责任者：Guo Yong (Xi’an Research Institute ; China Coal Technology and Engineering Group Corp. ; Xi’an 710077 ; China)
- 刊名：Exploration Engineering
- 出版年：2012
- 卷期：39(3)
- 关键词：钻进 ; drilling ; 螺旋钻 ; auger
- 页码：p.43-46
- 图表：7 illus., 1 table, 6 refs.
- 分类号：2000
- 出版序号：20130601
- issnNo：ISSN1672-7428
- isbnNo：CN11-5063/TD
摘要
Great water content in coal seam was encountered in the construction of gas extraction drilling in Jincheng, aiming to the problems of bad in-hole ventilation, poor powder exhaust effect and the affection to borehole depth and hole completing rate, wide blade auger drilling technology with medium air pressure was adopted. The field test proves that this technology application is ideal under such construction conditions.
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