Mineral aggregate separate mining method for timely supporting
The invention relates to a mineral aggregate separate mining method capable of supporting in time, which specifically comprises the following steps of: when a working surface is arranged, reserving a medium-high grade mineral aggregate layer at the upper part of a mineral wall in the height directio...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a mineral aggregate separate mining method capable of supporting in time, which specifically comprises the following steps of: when a working surface is arranged, reserving a medium-high grade mineral aggregate layer at the upper part of a mineral wall in the height direction, and arranging a bottom waste material layer below the medium-high grade mineral aggregate layer of the mineral wall, the bottom waste material layer comprises a low-grade mineral aggregate layer and a rock layer which are adjacent up and down; a mining machine C1 and a mining machine C2 are arranged on the same working face at the same time, the two mining machines firstly exploit a medium-high-grade mineral aggregate layer in parallel to form a top plate, then the exposed top plate is randomly supported immediately by pulling a support towards the ore wall side, finally, a bottom waste material layer is cut off in parallel, the top plate is formed after the medium-high-grade mineral aggregate layer is cut, and |
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