Project · Shaft sinking · South Africa
Shaft pre-sink and sinking
Setting up a vertical shaft for sinking: pre-sink bank steel, A-frame, winches and the sinking stage, then the sink itself. 2015.
The project
Where a vertical shaft begins
Before a vertical shaft can be sunk to depth, the collar has to be established and the shaft equipped for sinking. This 2015 project, listed in our portfolio under sinking and pre-sink, shows that stage of the work from start to finish.
The photographs on this page record the pre-sink of the vertical shaft and the installation of the pre-sink bank steel, the manufacture and installation of the pre-sink A-frame and shaft bank doors, the installation of Dymot winches for pre-sinking, the ring-back ladders, and the installation of the pre-sink stage — followed by the sinking stage in the shaft.
Much of that equipment comes from our own workshop: ShaftCon manufactures sinking stages, winches, ring-back ladders and bank steel, which is why one contractor can take a shaft from the box cut to sinking without a hand-over between suppliers.
- Year
- 2015
- Portfolio category
- Sinking and pre-sink
- Work
- Pre-sink, bank steel, A-frame, bank doors, Dymot winches, ring-back ladders, pre-sink stage, sinking
Scope of work
Pre-sink
Pre-sinking the vertical shaft to establish the collar.
Bank steel and bank doors
Installation of the pre-sink bank steel; manufacture of the shaft bank doors.
A-frame
Manufacture and installation of the pre-sink A-frame.
Dymot winches
Installation of Dymot winches for pre-sinking.
Ring-back ladders
Ring-back ladders for access during the pre-sink.
Pre-sink and sinking stages
Installation of the pre-sink stage, then the sinking stage in the shaft.
Everest vent shaft pre-sink and sink
From page 25 of the ShaftCon company profile: the pre-sink and sink of the Everest vent shaft.
Project photographs
Pre-sink and sinking photographs from site.
Related
Pre-sink, sinking, lining and equipping.
Drill rigs, stages, winches and shaft steel.
Xstrata, 2010.
Planning a shaft, decline or tunnel?
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