超深长斜井反井钻机大直径导井一次成型施工技术

Construction Technology of Large Diameter Guide Shaft Primary Forming for Super-deep Long Inclined Shaft Reverse Drilling Rig

浙江缙云抽水蓄能电站超深长斜井具有复杂的地质条件,导孔和导井的施工难度比较大,而且还很容易产生偏斜问题。因此通过分析超深长斜井反井钻机大直径导井一次成型施工技术,解决了超深长斜井导井施工施工中的各种问题,顺利贯通大直径导井,提高整体施工质量和安全性。

The ultra-deep long inclined shaft of Jinyun Pumped Storage Power Station in Zhejiang Province has complicated geological conditions.The construction of pilot holes and guided wells is difficult,and deflection problems are easy to occur.By analyzing the construction technology of large diameter guide shaft of super-deep and long inclined shaft counter-shaft drilling rig,various problems in the construction of super-deep and long inclined shaft guide shaft are solved,the large diameter guide shaft is smoothly penetrated,and the overall construction quality and safety are improved.