Practice and Drilling Technology of Gas Extraction Borehole in Soft Coal Seam

被引：15
|
作者：
Yao, Ningping [1 ]
Yin, Xinsheng [1 ]
Wang, Yi [1 ]
Wang, Li [1 ]
Ji, Qianhui [1 ]
机构：
[1] Xian Res Inst China Coal Technol Engn Grp, Xian 710077, Peoples R China
来源：
2011 XI'AN INTERNATIONAL CONFERENCE ON FINE EXPLORATION AND CONTROL OF WATER & GAS IN COAL MINES | 2011年 / 3卷
关键词：
Underground coal mine; Soft coal seam; Auger drilling; Moderate pressure air drilling;
D O I：
10.1016/j.proeps.2011.09.065
中图分类号：
TD [矿业工程];
学科分类号：
0819 ;
摘要：
The auger drilling technology and moderate pressure air drilling technology for soft coal seam in underground coal mine are introduced with their corresponding applications. According to the requirements of gas extraction borehole construction and the present status of drilling technology, the drilling problems and the developing trend of new drilling technology in soft coal seam are also discussed. Finally, some suggestions on borehole protection, pulverization dust control in borehole and directional drilling technology by air drilling motor are proposed. (C) 2011 Published by Elsevier Ltd.
引用
收藏
页码：53 / 61
页数：9
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