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金属矿山 ›› 2009, Vol. 39 ›› Issue (10): 114-116+125.

• 矿物工程 • 上一篇    下一篇

预飘措施在复杂地层中深孔钻探中的运用

侯晓东1,张艳芳2   

  1. 1.江铜集团地勘工程有限公司;2.武警警种指挥学院
  • 出版日期:2009-10-15 发布日期:2011-04-26
  • 基金资助:

    国家危机矿山资源接替项目(编号:200636030)。

Application of Pre-floating Measures in Deep-hole Drilling in the Complex Strata

Hou Xiaodong1,Zheng Yanfang2   

  1. 1.Jiangxi Copper Group Geological Exploration Engineering Co.,Ltd.;2.The Services Command College of Chinese Armed Police Force
  • Online:2009-10-15 Published:2011-04-26

摘要: 银山铜铅锌金银多金属矿区的地层是以千枚岩为主的,由于千枚岩片理极为发育,产状变化大,因此,以往在中深孔钻探施工过程中,均存在着钻孔弯曲度超规范的情况,严重制约着钻孔质量。为了有效解决这一难题,提高钻孔质量和探矿效果,组织进行了技术攻关,采取以预飘为主的措施,取得较好成效。

关键词: 钻孔倾角, 预飘, 钻探

Abstract: The strata in Yinshan Au-Cu lead-zinc multi-metal mine are mainly in form of phyllite.Due to the complex schistosity of phyllite and big occurrence change,the degree of borehole curvature is over norms in deep-hole drilling construction process,which seriously hampered the drilling quality.In order to effectively resolve this problem and improve the drilling quality and exploration results,a technical breakthrough is made,where pre-floating measures are adopted with better results.  

Key words: Dip angle in drill-hole, Pre-floating, Drilling