Mine field structure for limestone underground mine mining

The utility model provides a mine field structure for limestone underground mine mining, which comprises stages and panels, a plurality of chambers are arranged in the panels, segmented air return roadways and stage transportation roadways are arranged in the panels, an air return slope ramp is exca...

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Bibliographische Detailangaben
Hauptverfasser: LIANG QIANHUI, CHEN HAIBIN, CHEN WEIZHANG, CHEN CAIHUA, HUANG QIANG, LIN CAIFENG
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The utility model provides a mine field structure for limestone underground mine mining, which comprises stages and panels, a plurality of chambers are arranged in the panels, segmented air return roadways and stage transportation roadways are arranged in the panels, an air return slope ramp is excavated along the hanging wall of an ore body, and an air inlet slope ramp is excavated along the footwall of the ore body. The air return slope ramp is communicated with the segmented air return roadway through the segmented connection roadway, the air inlet slope ramp is communicated with the stage transportation roadway through the other segmented connection roadway, and the segmented air return roadway is communicated with the stage transportation roadway through the slope connection roadway. Compared with a ventilation pedestrian courtyard or an uphill ventilation line adopting a shallow-hole shrinkage open-stope method, the ventilation mode adopting lower-wall air inlet and upper-wall air return is smoother, an