Measurement of roof"three zones"of No.9-1 coal seam in Suhai Minefield
FAN Zhan-wen
MING Yin-long
Keywords：coal mineborehole peeping method"three zones"collapse zonefracture zone
Publication Date：2023-10-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 80-83 )