This standard specifies the specifications, technical requirements, test methods, inspection rules and marking, packaging, transportation and storage of diamond-shaped metal mesh (hereinafter referred to as "diamond mesh") for underground false roofs in coal mines. This standard is applicable to rhombus mesh used for artificial false roof, partial roof protection of single coal seam broken roof, working face finishing and tunnel support during layered mining of thick coal seams and extra thick coal seams in underground coal mines.
MT 314-1992 history
1992MT 314-1992 Rhombic metal mesh for coal mine false roof