| 大村矿段钻孔下偏心楔补采煤心施工技术 |
| 投稿时间：2010-08-26 修订日期：2010-08-26 点此下载全文 |
| 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].钻探工程,2011,38(3):26-28,32.HUANG Ping. Construction Technology of Supplementary Coal Coring with Eccentric Wedge in Borehole of Dacun Coalmine Section[J]. Drilling Engineering, 2011,38(3):26-28,32. |
| 摘要点击次数: 1118 |
| 全文下载次数: 890 |
|
|
| 中文摘要: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。 |
| 中文关键词:煤田钻探 绳索取心 金刚石钻进 偏心楔 补打斜孔 |
| |
| Construction Technology of Supplementary Coal Coring with Eccentric Wedge in Borehole of Dacun Coalmine Section |
|
|
| 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. |
| keywords:coalfield drilling wire-line coring diamond drilling eccentric wedge supplementary slanting drilling |
| 查看全文 查看/发表评论 下载PDF阅读器 |
