Analysis of Key Factors Affecting Deep Hole Drilling in Soft Outburst Coal Seams

DOI

10.2991/aer.k.201203.019How to use a DOI?

Keywords

Soft outburst coal seam, gas drainage, deep hole drilling, key factors, analysis

Abstract

Due to the coal softness and poor gas permeability of outburst coal seam, it is very easy to cause spray holes, stuck drills, hole collapse and coal cannons during drilling. Based on the long-term on-site coal seam drilling experience, combined with theoretical analysis, the key factors that restrict the deep hole drilling of prominent coal seams are discussed in depth. The situation inside the hole after serious hole injection and its impact on deep hole drilling, the effect of entrapment in coal seams on deep hole drilling, the impact of top and bottom plates on deep hole drilling and the effect of coal cannons on deep hole drilling are analyzed. The in-depth analysis of the key factors affecting deep hole drilling can provide the important technical guidance for the efficient drilling of deep holes in soft outburst coal seams.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Muguang Qin
PY  - 2020
DA  - 2020/12/03
TI  - Analysis of Key Factors Affecting Deep Hole Drilling in Soft Outburst Coal Seams
BT  - Proceedings of the 2020 9th International Conference on Applied Science, Engineering and Technology (ICASET 2020)
PB  - Atlantis Press
SP  - 96
EP  - 99
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201203.019
DO  - 10.2991/aer.k.201203.019
ID  - Qin2020
ER  -