Study on the secondary plugging technology of drilling through the floor through drainage

According to the analysis and research results of the leakage channels of the boreholes in the coal mine face, the secondary plugging area of the leakage boreholes was determined, and the secondary plugging technology of "new extraction pipe + 'one plug, one injection'" was formu...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 651; no. 3; pp. 32017 - 32021
Main Author Qin, Muguang
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.02.2021
Subjects
Boreholes
Coal mines
Drainage
Drainage effects
Drilling
Field tests
Flow rates
Flow velocity
Leakage
Plugging
Technology
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Summary:According to the analysis and research results of the leakage channels of the boreholes in the coal mine face, the secondary plugging area of the leakage boreholes was determined, and the secondary plugging technology of "new extraction pipe + 'one plug, one injection'" was formulated. And field test investigation was carried out. The research results show that after adopting the new secondary plugging technology for gas drainage, the concentration of gas drainage increases by 5~20 times, and the pure flow rate of gas drainage increases by 5~23 times, indicating that the drainage effect has improved significantly, which proves the feasibility of the secondary plugging technology.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/651/3/032017