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一、概况 在副井井筒延深溜矸井施工中,我们采用了深孔挤压爆破。依整个矿井延深的总程序,副井井筒延深是在其辅助巷(+345.5水平)和第二水平井底车场
First, an overview In the auxiliary shaft deep well roller block construction, we use a deep hole extrusion blasting. Depending on the overall process of the entire mine delamination, the extension of the auxiliary shaft is at its auxiliary lane (+345.5 level) and at the second horizontal well bottom