| 宽叶螺旋钻中风压钻进技术在晋城某矿的应用 |
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| 引用本文： | 郭涌. 宽叶螺旋钻中风压钻进技术在晋城某矿的应用[J]. 探矿工程, 2012, 39(3): 43-46 |
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| 作者姓名： | 郭涌 |
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| 作者单位： | 中煤科工集团西安研究院,陕西西安710077 |
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| 摘 要： | 针对觜城某矿井下沿煤层瓦斯抽采钻孔在施工过程中遇到煤层含水量较大时，孔内返风不畅，排粉效果差，影响钻孔孔深和成孔率等问题，采用宽叶片螺旋钻杆巾风压钻进工艺及试验。现场试验证明该工艺在含水量较大的煤层沿煤层瓦斯抽采（放）孔钻进施工中较为理想，值得推广。
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| 关 键 词： | 宽叶片螺旋钻杆 中风压 松软突出煤层 钻进技术 |
| 收稿时间： | 2011-09-15 |
| 修稿时间： | 2011-09-15 |
Application of Wide Blade Auger Drill with Medium Air Pressure in Jincheng Coalmine |
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| GUO Yong. Application of Wide Blade Auger Drill with Medium Air Pressure in Jincheng Coalmine[J]. Exploration Engineering:Rock & Soil Drilling and Tunneling, 2012, 39(3): 43-46 |
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| Authors: | GUO Yong |
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| Affiliation: | GUO Yong ( Xi＇ an Research Institute of China Coal Technology and Engineering Group Corp. , Xi＇ an Shaanxi 710077, China) |
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| Abstract: | Great water content in coal seam was encountered in the construction of gas extraction drilling in Jincheng, ai- ming 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 in such construction conditions. |
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| Keywords: | wide blade auger drilling rod medium air pressure soft outburst coal seam drilling technology |
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