METHOD FOR TECHNOGENIC FORMATION NEUTRALIZATION IN STORAGE LOCATION Russian patent published in 2006 - IPC E21B43/28 E21C41/00 

FIELD: mining, particularly to extract minerals from technogenic formations (wastes, dumps) stored on unprepared natural or imperfect artificial base by geotechnology methods.

SUBSTANCE: method involves forming exhaust wells in water-bearing horizon under technogenic formation base; constructing developing net of observation wells in water-bearing horizon to monitor underground water; accumulating under-dump water; extracting minerals from under-dump water to obtain mother solutions; pumping out contaminated underground water to ground surface through exhaust wells in volume, which provides creation of hydrodynamic swirl to prevent contaminated water spread beyond technogenic formation contour and partly evaporating contaminated water on ground surface; forming leaching solutions on the base of mother solutions and residual fraction obtained by contaminated underground water evaporation by additional strengthening thereof with leaching reagents; performing technogenic formation leaching by spraying obtained leaching solutions over the technogenic formation; bringing water-bearing horizon to natural condition thereof by pumping underground water from cater-bearing horizon and treating the underground water and under-dump water to obtain ecologically safe water.

EFFECT: improved ecology in storage location, increased efficiency of technogenic formation and under-dump solution utilization.

3 cl, 2 dwg, 1 ex