Collaborative mining method of rock-drilling stage and filling after inclined medium-thick ore body

Abstract

The invention belongs to the mining field and particularly relates to an ore-blast backfill synergetic mining method for a partitioned rock drilling stage of an inclined medium-thick ore body. According to the mining method, the partitioned rock drilling of fan-shaped blast holes of a trench ore section, annular blast holes of a non-triangular jamb and beam-shaped blast holes of triangular jamb in a rock drilling cave is realized based on different ore bodies and rock drilling conditions, the problem of blasting of a hanging side triangular jamb is solved, and the blasting effect of the annular blast holes in the rock drilling cave is improved; by comprehensively utilizing the dead load and the blasting-power handling of the ore body, the concentrated ore gathering of ores in ore gathering tunnels of trenches of different partitioned mining sections and the concentrated ore removal of ore removal lands and ore removal approach roads in the stage are realized, and the centralized working scale and efficiency of mining are improved; and by virtue of interval recovery, subsequent cementing and non-cementing synergetic backfilling on ore chambers and jambs, the continuity of the mining process among different mining sections is realized, and an efficient, safe and low-cost continuous mining method is provided for the inclined medium-thick ore bodies with medium stability and higher stability.

Description

technical field [0001] The invention relates to a continuous mining method for an inclined medium-thick ore body (the inclination angle of the ore body is smaller than the natural repose angle of the ore rock), in particular to a coordinated mining method for the inclined medium-thick ore body in the partition rock drilling stage, ore falling and then filling, and belongs to the field of mining . Background technique [0002] In the underground mining of inclined medium-thick ore bodies, the low-section (or layered) room-and-pillar method is used for mining, which increases the amount of mining and cutting engineering in the stope, makes production management difficult, and the ore block production capacity is low. With the advancement of mining, the exposed area after top cutting increases, which further increases the safety of underground operators and scrapers. At the same time, the ore body belongs to the inclined type (the inclination angle is smaller than the natural ...

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Problems solved by technology

[0003] For the mining of such ore bodies in China, the low-section (or layered) open-field method is mostly used, which has a low degree of mechanization and a low ore recovery rate.

In foreign countries, the filling method is the main method, which has a high degree of mechanization and a high recovery rate of ore, but the corresponding mining cost is also high.

At present, there is no good and efficient large-scale mining method for the mining of such difficult-to-mining ore bodies

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