Analysis of drilling and reaming technique of large diameter high directional hole and gas extraction effect

Analysis of drilling and reaming technique of large diameter high directional hole and gas extraction effect

Aiming at the problems of low comprehensive efficiency and high treatment cost in the conventional treatment of mining pressure relief gas in “U” ventilation mining face, taking a mining face in Jincheng Mining Area, Shanxi Province as the research object, ϕ200 mm large diameter high-position direct...

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Bibliographic Details
Main Authors: Weifeng YANG, Jianlin LIU, Fei LIU, Jianguo ZHAO, Zhiwei CHU
Format: Article
Language:zho
Published: Editorial Office of Safety in Coal Mines 2024-01-01
Series:Meikuang Anquan
Subjects:
gas drainage
large diameter high-position directional borehole
directional drilling technology
multi-power expanding
two stage and two speed screw motor
Online Access:https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20221669

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https://www.mkaqzz.com/cn/article/doi/10.13347/j.cnki.mkaq.20221669

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