我矿于1965年投产,原设计年产煤60万吨,1972年5月向二水平延深,1978年主要生产采区逐渐下延到二水平生产,1980年实现产量翻番,1982年至今矿井年产量一直稳定在150万吨左右。二水平生产的特点是:采区分散、运输线长、环节多、系统复杂,运输工作事故多(机车追尾、撞车事故经常发生),给国家 I mine put into operation in 1965, the original design annual output of 600000 tons of coal, in May 1972 to the second level of extension, in 1978 the main production areas gradually extended to second-level production, doubled the output in 1980 to achieve, since 1982 mine Annual output has been stable at 1.5 million tons. Two levels of production are characterized by: mining area scattered, long transportation lines, many links, complex systems, transport and more accidents (locomotive rear-end, crashes happen often) to the country