Experimental Study on Directional Long Hole Gas Drainage in Thick Coal Seam Roof

DOI

10.2991/aer.k.201203.003How to use a DOI?

Keywords

Thick coal seam, roof directional long drilling, gas extraction, gas control

Abstract

In order to study the application of roof directional drilling in thick coal seam gas control, and compare the input of roof directional drilling and roof high suction roadway, the roof directional long hole gas extraction test was carried out in Jincheng mining area. After the completion of the construction of the high-level long hole in the roof, the daily average net amount of gas drainage is stable at 17000m3~20000m3, and the cumulative net amount of gas drainage is about 2.8 million m3. Compared with the roof high drainage roadway, the investment of roof directional long drilling to control the gas in the mining face can be reduced by 50%, the construction period can be shortened by 33%, and the manpower can be reduced by 30 people. Through the experimental data, the feasibility of the application of high and long drilling in thick coal seam is proved.

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  - Ran Wang
AU  - Quanmin Jia
PY  - 2020
DA  - 2020/12/03
TI  - Experimental Study on Directional Long Hole Gas Drainage in Thick Coal Seam Roof
BT  - Proceedings of the 2020 9th International Conference on Applied Science, Engineering and Technology (ICASET 2020)
PB  - Atlantis Press
SP  - 10
EP  - 13
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201203.003
DO  - 10.2991/aer.k.201203.003
ID  - Wang2020
ER  -