Mining or in situ disintegration of hard material – Processes – With material-handling
Patent
1991-07-19
1993-04-06
Bagnell, David J.
Mining or in situ disintegration of hard material
Processes
With material-handling
299 19, F21C 4100
Patent
active
051997681
ABSTRACT:
A method for developing thick beds of minerals accomplished by large-section rooms. The method comprising the preparation of the room for winning which includes providing a conveyor working below the soil of the room and extending for the entire length thereof, driving transport and fan drifts and raises, and forming an inclined working to fit the design contour of the room. The winning is effected in horizontal layers in a descending order by forward and reverse movements of the cutter-loader. Each horizontal layer is developed by stopes throughout the entire length of the room via overlapping the cutter-loader movements. The first stope in each layer is developed in the range of the raises. Subsequent stopes are formed adjacent one another outwardly in the direction from the first stope toward the edges of the room. Extraction of subsequent layers starts from the soil of the preceding layer by deepening the cutter-loader to a layer underneath to the height of its actuator. In the end part of the room within the limits of one stope there is formed an inclined descent to a layer below which is then suppressed while developing this layer opened by this descent. The inclined working is opened in each layer by developing extreme movement in the steps from the raise outward to the inclined working. The mineral is supplied to the raises and passed to the conveyer working.
REFERENCES:
Processes of Underground Mining in Development of Ore Deposits, NEDRA Publishers, 1984, Moscow, pp. 434-439.
Klishev Vasily L.
Kovtun Vladimir Y.
Papulov Lev M.
Tripolko Alexandr S.
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