立井井筒的工程量只有新井建设总工程量的2.02～8.6％,而其所占工期却达到29.6～55.3％。随着煤炭开发深度的增加,井筒深度还将不断增加,有些矿井已达千米以上。据估算立井工地一年的辅助车间和管理费用大约400～1300万元,矿井如能提前投产,每吨煤可以提供700～800元产值的能源,因此,立井井筒施工方案选择的主要指标是速度,而速度又是和经济效益一致的。 加快立井施工速度的措施很多,其中井筒施工方式的选择是重要措施之一。选择立井作业方式,经常遇到的是平行作业或单行 The engineering volume of the shaft is only 2.02 ~ 8.6% of the total amount of the new well construction, and its construction period is 29.6 ~ 55.3%. As the depth of coal development increases, the depth of the wellbore will also continue to increase, and some mines have reached more than 1000 meters. It is estimated that the auxiliary workshop and management costs of a vertical shaft site are about 400 to 13 million yuan a year. If the mine can be put into operation in advance, it can provide energy with a production value of 700-800 yuan per ton of coal. Therefore, the main indicator of shaft construction program selection is speed , While the speed is consistent with the economic benefits. There are many measures to speed up the construction of shaft, of which the choice of wellbore construction method is one of the important measures. Choose shaft operations, often encountered in parallel operations or a single line