Open AccessResearch and application of gas drainage technology by downward drilling holes
Author(s) -
Muguang Qin
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/692/4/042008
Subject(s) - drainage , drilling , borehole , casing , petroleum engineering , excavation , jacking , environmental science , mining engineering , compressed air , geology , geotechnical engineering , engineering , mechanical engineering , art , ecology , performance art , biology , art history