Air distribution system with the discharge action in the working cavity of downhole air hammer drills

It is proposed to carry out pre-mine methane drainage using underground degassing holes made by downhole air hammer drills. The features of downhole air drills are described. The downhole air drill layout with the simple-shape striking part is presented with its pluses and minuses. The researchers p...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2018-03, Vol.134 (1), p.12062
Main Authors: Timonin, VV, Alekseev, SE, Kokoulin, DI, Kubanychbek, B
Format: Article
Language:English
Subjects:
Degassing
Drilling
Drills
Hammer drills
Layouts
Methane drainage
Underground mines
Citations: Items that this one cites
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Description
Summary:It is proposed to carry out pre-mine methane drainage using underground degassing holes made by downhole air hammer drills. The features of downhole air drills are described. The downhole air drill layout with the simple-shape striking part is presented with its pluses and minuses. The researchers point at available options to eliminate the shortcomings. The improved layout of the downhole air hammer drill is suggested. The paper ends with the test data on the prototype air hammer drill, its characteristics and trial drilling results.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/134/1/012062