目前,竖井的日历延深速度很低,由于要用大量时间作准备工作,一般不大于6～8米/月。在竖井延深的准备阶段,为安装工艺设备要掘进临时峒室,要开挖岩石达2000米~3,而支护需要混凝土250～300米~3。在延深水平从掩护装置下部开挖岩石会显著延长准备阶段。由于这些因素会增加准备工作的预算费用。 At present, the silhouetted calendar has a very slow calendar speed. Due to the large amount of time it takes to prepare, it is usually not more than 6 to 8 meters per month. In the preparation stage of shaft delamination, excavation of temporary rock for the installation of process equipment should reach 2,000m ~ 3m, while support requires 250 ~ 300m ~ 3 of concrete. Digging rock from the lower part of the shield at a deep level can significantly extend the preparation phase. Because of these factors will increase the budget costs of preparation.