我国是产煤大国，但露天采煤的比重却一直很低。1993年我国露天采煤约4000万t，占全国煤产量的3．5％，其中国有重点露天煤矿产量3027万t，占全国重点煤矿产量的6．6％，比重之低与产煤大国的地位极不相称。从资源条件看，根据《中国煤炭资源报告》，全国适宜露天开采的储量为6 China is a big country producing coal, but the proportion of open-pit coal mining has been very low. In 1993, China’s open-pit coal mining was about 40 million tons, accounting for 3.5% of the national coal output, of which the output of state-owned key open-pit coal mines was 30.27 million tons, which accounted for 6.6% of the national key coal mine production, and the proportion was low and the largest coal-producing country The status is extremely disproportionate. According to the resource conditions, according to the “China Coal Resources Report”, the country’s suitable open-pit mining reserves are 6