FIELD: mining.
SUBSTANCE: invention relates to mining and can be used in quarry mining of minerals. In compliance with this invention, rigidity and bead thrust prisms and are formed at all stages of quarry development. Bead cross-over is completed at designed elevation point and aforesaid prisms are completed by cutting inclined-bottom trench in extracting minerals. Support pillar is formed along thrust prism, and cross-over fill-up link is formed adjoining aforesaid prism and rigidity prisms to be enlarged inside cross-over area. Cross-over is cut further on along thrust prism in rock support pillar. Note here that, in similar conditions, above described jobs are repeated. Invention covers analytical relations intended for determining elevation point and location of cross-over completion on aforesaid bead and calculation of fill-up cross-over length.
EFFECT: determination of feasibility and volume of minerals extraction via comprehensive formation of quarries.
5 dwg
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