多勃罗波利耶煤矿公司《少先队员》和《红军战士》水采矿井每年掘进的采准巷道分别为51和44公里。在总工程量中切割巷道约占66％,千顿煤的采切量为70～50米。切割巷道的净断面积为3.6米~2,长150～250米,其服务期限1～2个月。通常在半圆木或 The number of quarried roadways excavated each year by the “Young Pioneers” and “Red Army Soldiers” water mines at the Dobropolé Coal Company is 51 and 44 kilometers respectively. In the total project volume of about 66% of the roadway cutting, coal cutting tons of coal is 70 to 50 meters. The net area of ​​the cutting roadway is 3.6 m ~ 2 and 150 ~ 250 m long. The service period is 1-2 months. Usually in semicircular wood or