Filling mining method for continuous backstoping of gently inclined parallel medium thick ore body group

Abstract

The invention discloses a filling mining method for continuous backstoping of a gently inclined parallel medium thick ore body group. According to the method, performing middle section division on a gently inclined parallel ore body group; performing panel division in the middle section along the strike; performing segment division in the panel; performing room and pillar backstoping; and performing stope vertical ore body trend arrangement. Main stope preparation projects such as out vein segmented roadways, layered connection roadways, chute connection roadways, draw shafts and sidewalk air inlet rise faces are arranged at an ore body lower panel; stope preparation projects such as filling return air shafts, lower ore bed return air filling shaft connection roadways and water filter well connection roadways are arranged in the upper ore layer and the lower ore layer, and are communicated through ort roadways at the bottom of the panel. The layer-by-layer backstoping is performed from bottom to top from the upper layer vein digging internal rock drilling roadways near the lower layer, and layers use the operation circulation of two mining, two discharging and one filling; a plurality of rooms simultaneously operate in the panel without mutual interference; and the continuous backstoping is realized. The method belongs to the optimized improvement based on a panel upward horizontal layered filling mining method; multilayer mineral veins can be backstoped at the same time; and separated mining and separated transportation are realized.

Description

technical field [0001] The invention belongs to the mining field of underground metal mines and non-metal mines, and in particular relates to a filling mining method for continuous mining of gently inclined parallel medium-thick ore body groups. Background technique [0002] The type of phosphate deposit in Weng'an area, Guizhou, my country belongs to the sea source colloidal chemical accumulation-basin particle resedimentation origin phosphate deposit. Body, good continuity. The upper ore is calcium-magnesium phosphorite ore, which is suitable for producing ordinary phosphate fertilizer or phosphoric acid, and the lower layer is silicon-calcium phosphorite ore, which is suitable for producing high-value yellow phosphorus. Mining needs to be mined and transported separately. There is an interlayer with an average thickness of 4m between the two ore layers. The roof of the ore body is filled with water, and rivers flow through the mining area on the surface. The stability o...

AI Technical Summary

Problems solved by technology

However, when mining with this method, the approach advances along the direction, and it is difficult to ensure the safety of the stope for the simultaneous mining of the upper and lower parallel ore layers, and it is difficult to realize the separate transportation of the two kinds of ore and waste rock by belt transportation.

Chinese patent CN201110393951 discloses a mining method for gently inclined and medium-thick ore bodies without stages along the strike strips and continuous subsequent filling. Full thickness mining, small mining ratio, small dilution loss, simple process, but not suitable for conditions where the ore body and roof are not stable

To sum up, the existing mining methods are limited to single seam mining, or require a relatively stable roof, which cannot meet the requirements of multi-layer simultaneous mining, separate mining and separate transportation of gently inclined parallel medium-thick phosphate rock groups with unstable ore rocks

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