METHOD OF ANTHROPOGENIC EPIGENESIS OF BACKFILLING WATER PERMEABLE AREAS OR ZONES IN SALT ROCK Russian patent published in 2009 - IPC E21C41/20 E21B33/13 

FIELD: mining.

SUBSTANCE: invention refers to mining industry and can be implemented for reducing water permeability of salt rock and flush danger. Known technologies of backfilling zones of heightened water permeability in pay thickness of salts are based on application of solutions of various cements, clay, synthetic resins, salt powders and other compositions characterised with higher values of viscosity, and small radii of rock densification, which negatively effects quality of mineral. The method of anthropogenic epigenesis of backfilling of water permeable areas or zones in salt rock consists in exposing zones of heightened water permeability with backfilling boreholes, in preparing salt solutions on surface, in their heating, if necessary, and in pumping them into the zone of backfilling. Saturated true salt solutions or natural brines are used as backfilling solutions; under conditions of temperature drop these solutions isolate excess of salt into sediment and backfill water conducting fissures.

EFFECT: invention facilitates safety of underground mining operations, conservation of favourable ecological environment and maintaining quality of mineral on salt mines.

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