Technical Difficulties of Thick Overburden Layer Drilling in Xiaoqinling Gold Mine and the Countermeasures

Home > Archive>Volume 41, Issue 1, 2014 >27-29,32

Technical Difficulties of Thick Overburden Layer Drilling in Xiaoqinling Gold Mine and the Countermeasures
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                        LUO Yong-guiLUO Yong-gui
No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development
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WANG Hong-yangWANG Hong-yang
No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development
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LIU Jian-huaLIU Jian-hua
No.4 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development
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Affiliation:No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development,No.3 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development,No.4 Geological Exploration Institute, Henan Provincial Bureau of Geo-exploration and Mineral Development
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Abstract:

The analysis is made on the technical difficulties of thick overburden layer drilling in Xiaoqinling gold mine; the technical countermeasures are researched to solve the problems in thick overburden layer wire-line core drilling in the aspects of drilling methods, borehole structure, wall protection with mud and process measures, which have brought good effects in the practice.

Key words:thick overburden layer; technical difficulty; wire-line core drilling; borehole structure; mud; Xiaoqinling gold mine

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Received:July 24,2013
Revised:July 24,2013
Adopted:October 24,2013
Online: January 20,2014
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