在我国非煤矿山中,矿内火灾绝大部分是由于木支架与明火接触,电气线路、照明和电气设备的使用和管理不善,在井下违章进行焊接作业,使用火焰灯、吸烟或无意有意点火等外部原因引起的,随着矿山机械化、自动化程度的提高,电气原因引起火灾的比例会不断增加,这就要求在设计和使用机电设备时,严格遵守电气防火条例,防止因短路、过负荷、接触不良和串线等原因引 In China’s non-coal mines, the vast majority of mine fires are caused by the contact of wooden brackets with naked flames, poor use and management of electrical wiring, lighting and electrical equipment, illegal welding operations in wells, the use of flame lights, smoking or accidental ignition Due to external reasons, with the increase of mine mechanization and automation, the proportion of fire caused by electrical reasons will increase continuously. This requires strict observance of electrical fire prevention regulations in the design and use of mechanical and electrical equipment to prevent short circuit, over load and contact Bad and string reason cited