Application of Downward Installation Technology for Shaft Drilling Derrick
In the construction of the exploration roadway in the middle section of the 6000m section of the 2#exploration well of Tongling Nonferrous Yaojialing Mining Company,temporary measures for changing the excavation and masonry of the shaft to the exploration level roadway need to be taken,and two sets of lifting systems,namely bucket and cage,must be used.Install a stabilizing steel beam and a manual tank support device in the middle section of the wellbore-600m,and install a sleeve stand below the surface drilling shaft frame.For the first time during the installation process of the scaffolding,the downward installation process was adopted,which reduced the construction period from 25 days to 20 days compared to the traditional upward installation process,achieving rapid installation construction and excellent engineering quality.
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