Sublevel cut and fill stoping with thin and medium phosphate ore in gently inclined interlayered deposits
By dividing the ore blocks along the strike in gently dipping interlayers and using the transport roadway within the a-seam vein to connect the b-seam, segmented upward mining of thin and medium-thick ore layers was achieved. This solved the problems of resource waste and low efficiency in the segmented backfilling mining method for medium-thick and thin phosphate ore in gently dipping interlayers, and realized efficient and high-yield ore mining.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUIZHOU UNIV
- Filing Date
- 2026-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
In the segmented backfilling mining method for gently dipping interlayered phosphate rock layers with medium-thick and thin layers, how can we coordinate planning and safely and efficiently mine the rock to avoid resource waste and improve recovery efficiency?
The thin ore layer A and the medium-thick ore layer B are mined separately in the hanging wall of the interlayer. The ore blocks are divided along the strike, and the ore layer B is connected by the haulage roadway in the vein of ore layer A. The haulage roadway in the vein of ore layer A is used as the main haulage roadway. Cutting risers and connecting roads are constructed to realize segmented upward mining and filling.
It improved the utilization rate of roadways, reduced the amount of roadway excavation work, reduced interference between the two mining layers, and achieved efficient and high-quality ore mining and ventilation, thus realizing high-yield and efficient resource utilization.
Smart Images
Figure CN122407183A_ABST