| 大村矿段钻孔下偏心楔补采煤心施工技术 |
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| 引用本文： | 黄平.大村矿段钻孔下偏心楔补采煤心施工技术[J].探矿工程,2011,38(3):26-28,32. |
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| 作者姓名： | 黄平 |
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| 作者单位： | 四川省煤田地质局一三五地质队,四川泸州646000 |
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| 摘 要： | 在煤田钻探施工中,经常会出现打薄打丢煤层现象,影响采样化验和对井田的评价。为了准确了解煤层的深度、厚度和采取完整的煤样,保证勘探质量,必须补打斜孔采取煤心,以满足地质设计和煤田勘探钻孔工程煤层质量标准的要求。在川南煤田古叙矿区大村矿段的钻探施工中,采用金刚石绳索取心钻进工艺,摸索并掌握了下偏心楔补采煤心的施工技术。
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| 关 键 词： | 煤田钻探 绳索取心 金刚石钻进 偏心楔 补打斜孔 |
| 收稿时间： | 2010/8/26 0:00:00 |
| 修稿时间： | 2010/8/26 0:00:00 |
Construction Technology of Supplementary Coal Coring with Eccentric Wedge in Borehole of Dacun Coalmine Section |
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| HUANG Ping.Construction Technology of Supplementary Coal Coring with Eccentric Wedge in Borehole of Dacun Coalmine Section[J].Exploration Engineering(Drilling & Tunneling),2011,38(3):26-28,32. |
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| Authors: | HUANG Ping |
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| Institution: | HUANG Ping(135 Geological Team of Sichuan Bureau of Coal Geology,Luzhou Sichuan 646000,China) |
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| Abstract: | Coal seam often disappears or thinner than expected in coalfield drilling construction;therefore,the sampling experiment and the evaluation on minefield would be uncertain.In this case,the supplementary coal coring by slant drilling is necessary for accurately realizing the position and the thickness of coal seam with complete coal sample.Diamond wire-line coring drilling technology was adopted in the drilling construction in Dacun coalmine section of Guxu mining area of South Sichuan coalfield,the technology of supplementary coal coring with eccentric wedge was studied and mastered. |
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| Keywords: | coalfield drilling wire-line coring diamond drilling eccentric wedge supplementary slanting drilling |
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