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一、概述随着我国国民经济的飞跃发展,煤炭生产大幅度增长,使坑木消耗量急剧增加.因此,在煤炭生产中,寻求坑木代用途径,对贯彻执行毛主席“备战、备荒、为人民”这一伟大战略方针,支援社会主义建设,具有重大的政治意义和经济意义.近年来,各地虽已采用不少坑木代用品,但仍不能满足煤炭生产日益发展的需要.而这些代用品中,解决井下巷道支护方面的居多,回采工作面的坑木代用材料还不广泛,而回采所消耗的坑木量在整个煤矿生产中,又占有相当大的比例.仅据拣银岩煤矿一九七四年一季度统
I. Overview With the rapid development of the national economy in our country, the coal production has risen sharply and the consumption of pit mines has risen sharply. Therefore, in coal production, we have sought ways to substitute pits and plutons for the implementation of Chairman Mao’s “preparation and preparation for People’s ”great strategic policy of supporting socialism has great political and economic significance.In recent years, although a large number of pits and wood substitutes have been adopted in various places, they still can not meet the needs of the ever-increasing development of coal production, Supplies, to solve the majority of underground roadway support, the mining face of the pit substitute material is not yet widely used, and the amount of pits consumed by the recovery of coal production in the entire production, but also occupy a considerable proportion of only pick silver rock Coal mines in the first quarter of 1974