近年来,回采工作和掘进准备巷道之间出现的明显失调,对完成生产计划有严重影响。 在快速掘进队的现有技术条件下,在矿井内达到高速掘进的尝试都带有偶然性并常常是以无结果而告终。在这种情况下,准备工作的劳动量增加和掘进巷道的断面增大(列宁斯克煤炭联合公司从1981年的7.28m~2增大到1987年的9.8m~2),对生产造成不少 In recent years, apparent dislocations between mining work and tunneling for preparation have serious implications for the completion of production planning. At present state of the art of fast-driving teams, attempts to reach high-speed headings in mines are both accidental and often unsuccessful. Under such circumstances, an increase in the amount of labor required for preparation and an increase in the cross-section of roadways for excavation (Lennox Union coal company increased from 7.28 m 2 in 1981 to 9.8 m 2 in 1987)