1976～1980年苏联煤矿企业平巷掘进量超过了3,200千米,年平均进尺6,400千米。掘进巷道长度在不断减少。煤炭产量虽然有所下降,但巷道相对长度仍保持在14.3米/千吨左右。表1列出了苏联一些矿区掘进工程分布的情况。这些巷道主要是采用部分断面掘进机和用常规方法掘进。只有一部分巷道是采用液压掘进机掘进。图1所示为平巷掘进中装岩机械化程度。 During the period of 1976-1980, coal mines in the Soviet Union had more than 3,200 kilometers of roadways dumped, with an average annual footage of 6,400 kilometers. Driving tunnel length is decreasing. Although the coal output declined somewhat, the relative length of the roadway remained at 14.3 m / kiloton. Table 1 shows the distribution of tunneling works in some mining areas in the Soviet Union. These tunnels are mainly used for some section boring machine and the conventional method of driving. Only part of the roadway is driven by a hydraulic boring machine. Fig. 1 shows the rock mechanization level in the tunneling.