笔者调查了全省署属以上设计能力3～60万吨/年的128对矿井,大部分矿井长期达不到设计能力。1980年前后,有关部门曾对全省生产矿井的设计能力进行了一次全面的核实,调查的128对矿井中,有61对矿井核减了生产能力,占矿井对数的47.7 ％。61对矿井原设计能力891万吨/年,核实为455万吨/年,核减设计生产能力436万吨/年,核减 The author investigated the province’s subordinate above design capacity of 300,000 to 600,000 tons / year of 128 pairs of mines, most of the mines have long failed to design capacity. Around 1980, relevant departments conducted a comprehensive verification of the design capabilities of the production mines in the province. Among 128 mines investigated, 61 pairs of mines reduced their production capacity, accounting for 47.7% of the mine logarithm. 61 The original designed capacity of mine was 8,910,000 tons / year, verified to be 4,550,000 tons / year, designed to be reduced to 4.36 million tons by designed production capacity,