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一九八一年全国统配煤矿的机采产量达到1.1亿吨,比上年增加470万吨。采煤机械化程度达到39.8%,比上年增加2.7%。综采产量增长幅度最大,达到4900万吨,比上年增加1127万吨,综采产量占回采产量的17%,比上年增加4%,综采工作面个数年底已达142个,工作面平均月产量达到33700吨。综采的发展引起了煤矿生产、技术、管理上的一系列变化,在改变着煤矿的技术面貌。
In 1981, the national machine-building output of coal mines nationwide reached 110 million tons, an increase of 4.7 million tons over the previous year. Mining mechanization reached 39.8%, an increase of 2.7% over the previous year. Fully mechanized mining output increased the most, reaching 49 million tons, an increase of 11.27 million tons over the previous year. Fully mechanized production accounted for 17% of the total output of recovery, an increase of 4% over the previous year. The number of fully mechanized mining face has reached 142 by the end of the year. The average monthly surface production reached 33700 tons. The development of fully mechanized coal mining has aroused a series of changes in the production, technology and management of coal mines, changing the technical face of coal mines.