Method and apparatus for developing shafts using small diameter shafts
AssigneeDeep Shaft Technology Inc.
InventorDennis Mraz
Life of this patent
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Abstract
A mining method and apparatus includes drilling two relatively small diameter shafts in proximity to each other, and operating a single hoisting system between the two shafts. The hoisting system includes a hoist that simultaneously moves first and second conveyances in opposite directions respectively in the first and second shafts.
Claims22
A method of developing a mine comprising the steps of:
- forming a first shaft;
- forming a second shaft in proximity to, but not in communication with, the first shaft;
- and
- operating a single hoisting system in the first and second shafts.
An apparatus for developing a mine comprising:
- means for forming a first shaft;
- means for forming a second shaft in proximity to, but not in communication with, the first shaft;
- and
- means for operating a single hoisting system in the first and second shafts.
A hoisting system for simultaneously moving first and second conveyances respectively in first and second shafts disposed in proximity to each other, but not in communication with each other, the hoist comprising:
- a hoist;
- a headframe disposed over the first and second shafts, and including first and second head sheaves;
- and
- means for connecting the first and second conveyances to each other and operatively engaging the hoist,
- the hoist being operable to move the first and second conveyances simultaneously in opposite directions.
Dependencies are inferred from the claim text.