Research progress of gas drainage boreholes sealing materials and matching technology in underground coal mine

It was one of the hot spots that coal mine safety technicians were competing for studying the suitable sealing material and its matching technology for gas drainage and drilling with the characteristics of coal mine gas occurrence conditions fully considered. We briefly analyzed the path of air ente...

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Bibliographic Details
Published inMei kuang an quan Vol. 52; no. 8; pp. 175 - 181
Main Authors YAN Wenxue, CHENG Bo
Format Journal Article
LanguageChinese
Published Editorial Office of Safety in Coal Mines 01.08.2021
Subjects
borehole
gas concentration
gas drainage
grouting
sealing materials
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Summary:It was one of the hot spots that coal mine safety technicians were competing for studying the suitable sealing material and its matching technology for gas drainage and drilling with the characteristics of coal mine gas occurrence conditions fully considered. We briefly analyzed the path of air entering the gas extraction borehole in the roadway of underground coal mine, summarized the influencing factors of sealing materials and supporting technology for gas extraction drilling, emphasized the research progress of plugging materials commonly used in China’s coal industry and their supporting technologies, and put forward the existing problems and future research directions.
ISSN:1003-496X
DOI:10.13347/j.cnki.mkaq.2021.08.031