结合山东金岭铁矿深204.50 m、直径800 mm投料孔工程的施工,介绍了在硬岩地层先施工前导孔再用组装钻头扩孔的大口径深孔施工工艺。
李雪桥,索鹏,索有堂.大口径硬岩投料深孔施工工艺[J].钻探工程,2008,35(6):69-70,75.LI Xue-qiao, SUO Peng, SUO You-tang. Construction Technology of Deep and large Diameter Feeding Orifice in Hard Rock[J]. Drilling Engineering, 2008,35(6):69-70,75.