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苏联煤炭产量的提高和综合机械化设备的广泛应用促使许多煤田开采深度显著增加(从600m～1300m)。由此,岩石应力就增强,矿山压力显现更趋剧烈。煤柱尺寸增加了1.2～1.8倍,相应带来开采面积增加,开采损失加大且经常伴有瓦斯突出、岩爆和自燃发火。
The increase in coal production in the Soviet Union and the widespread use of integrated mechanized equipment have led to a significant increase in the depth of exploitation of many coal fields (from 600 m to 1300 m). As a result, the rock stress increased, the mine pressure appears more intense. Pillar size increased by 1.2 to 1.8 times, resulting in an increase in mining area, increased mining losses and often accompanied by gas outburst, rock burst and spontaneous combustion.