This standard specifies the graphical symbols and rules for the use of coal mining face support machinery. This standard is applicable to the mechanical equipment diagram of the mining area, and can also be used in other related aspects.
GB/T 18024.2-2000 history
2011GB/T 18024.2-2010 Graphical symbols for technical documents of coal mine machinery Part 2: Graphical symbols for supports and pillars of coal mining face
2000GB/T 18024.2-2000 Graphical symbols for use in technical documentation of coal mine machinery-Graphical symbols for coal face support machinery