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一、立井井筒基岩施工方式立井井筒施工方式的选择,是一个具有全局性的技术问题。它直接影响着整个建井工期。据我国红阳矿区一、二、四号井的统计,井筒工程量仅占井巷移交总量的4.7％,而井筒工期却占建井总工期的18～30％。因此,加快井筒施工速度,对缩短建井总工期有着重大意义。尤其在我国重点煤炭基地,
First, the shaft shaft shaft rock shaft construction method shaft shaft selection of construction methods, is a global technical problems. It directly affects the entire construction period. According to the statistics of No. 1, No. 2 and No. 4 wells in Hongyang Mining Area in our country, the amount of the wellbore engineering accounts for only 4.7% of the total amount transferred by the mine shaft, while the well bore period accounts for 18-30% of the total construction period of the well. Therefore, to speed up the construction speed of wellbore is of great significance to shortening the total construction period of wells. Especially in China’s key coal bases,