This standard specifies the parameter series of safety drilling rigs (drilling rigs for short) used in coal mines. This standard is applicable to the determination of the main parameters of newly developed, improved or modified electric, pneumatic or hydraulically driven drilling rigs for underground coal mine pumping, gas drainage and outburst prevention, coal (rock) layer water injection, water exploration and discharge, fire prevention and fire extinguishing and other projects. .
MT/T 640-1996 history
1996MT/T 640-1996 Coal mine safety drilling rig parameter series