一、概述 (一)苏联薄煤层简况 苏联把0.7—1.2米厚度的煤层列入薄煤层,小于0.7米厚的煤层为极薄煤层。 1975年,苏联的薄煤层产量占苏联煤炭产量的31.8％,其中极薄煤层占4.7％。 苏联倾角在35°以内的缓倾斜薄煤层和极薄煤层主要集中在顿巴斯煤田,在煤炭储量平衡表内薄煤层占76.6％,其中极薄煤层占22％。 First, an overview (A) of the Soviet Union thin seam profile The Soviet Union to 0.7-1.2 m thickness of the coal seam into the thin seam, less than 0.7 m thick seam is extremely thin seam. In 1975, Soviet Union’s thin seam production accounted for 31.8% of the Soviet Union’s coal production, of which very thin seam accounted for 4.7%. The thin slab and thin seam with gently inclined inclination within 35 ° of the Soviet Union are mainly concentrated in the Donbass coalfield, with 76.6% of the thin coal seam in the balance sheet of coal reserves, of which, the thin seam accounts for 22%.